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Multi-functional trade-offs and synergy research on land systems are hotspots in geography and land science research, and are of great significance for achieving sustainable development of land use and the effective allocation of land resources. Recently, the development of the western region and The Belt and Road Initiative have become key topics, bringing opportunities and challenges to Xi’an. The rapid development of cities is accompanied by drastic changes in land use, and the ecological problems in the Qinling Mountains are becoming increasingly severe. This study took Xi’an as a case study and quantitatively evaluated the spatial-temporal patterns and trade-offs of land system functions such as economic development (ED), grain production (GP), ecological service (ES), etc. on the scale of 1 km × 1 km by fusing the data on land use, topography, soil, climate, and social economy. The results showed that the ED function of the land system continued to rise between 1980 and 2015, the GP function first declined and then increased; however, the ES function continued to decline. The ED, GP and ES functions respectively present a spatial pattern of high-value agglomeration, high in the north and low in the south, and high in the south and low in the north. In general, the three land system functions were trade-offs between each other. In terms of spatial pattern, ED and ES functions showed trade-offs in the south and a synergy distribution in the north; ESs and GP function trade-off zone significantly larger than the synergy zone, the trade-off between the two was significant; while the trade-off and the synergy zone for GP and ED was relatively small, the trade-off zone was the main one. The significant trade-off between GP and ES functions of the land system is a serious problem in land use in Xi’an. Under the premise of limited arable land, it is the current feasible strategy to promote the high-quality development of agriculture to increase the cultivation rate and efficiency, and to strengthen the ecological protection of arable land. In addition, the continued decline of ES functions is also worthy of attention. It is necessary to focus on increasing the greening rate of the city and strengthening the ecological management of the northern foot of the Qinling Mountains.
Jiaqi Shao; Fei Li. Multi-Function Tradeoffs of Land System in Urbanized Areas—A Case Study of Xi’an, China. Land 2021, 10, 640 .
AMA StyleJiaqi Shao, Fei Li. Multi-Function Tradeoffs of Land System in Urbanized Areas—A Case Study of Xi’an, China. Land. 2021; 10 (6):640.
Chicago/Turabian StyleJiaqi Shao; Fei Li. 2021. "Multi-Function Tradeoffs of Land System in Urbanized Areas—A Case Study of Xi’an, China." Land 10, no. 6: 640.
Land resources are the basis of human survival and development. Land use benefit is the embodiment of land input-output ability. As an important economic zone and ecological barrier in China, it is important to calculate the land productivity in the Yellow River Basin. Using the center of gravity model and other methods, this study evaluated the land use benefit of the Yellow River Basin from 1995 to 2018 based on the selected indicators of geographic grid-scale and analyzed the regional disparity. The results revealed that the comprehensive benefits, economic benefits, and social benefits of land use were on the rise, but the ecological benefits changed in volatility. Land circulation had a great impact on the change of land use benefits. So reasonable land transfer policy should be particularly significant for land use in the Yellow River Basin. In addition, there were obvious spatial differences and agglomeration effects in land use benefit. The high values of benefits were concentrated in urban groups, which showed that areas with better economic and social development had better land use benefits. To narrow land use benefits’ spatial differences between regions, the less developed areas deserve more preferential policies to improve their economic and social levels. Besides, ecological benefits are generally not high. Thus, the land policy in the Yellow River Basin should take ecological priority as the basic principle while considering economic factors.
Zehui Chen; Qianxi Zhang; Fei Li; Jinli Shi. Comprehensive Evaluation of Land Use Benefit in the Yellow River Basin from 1995 to 2018. Land 2021, 10, 643 .
AMA StyleZehui Chen, Qianxi Zhang, Fei Li, Jinli Shi. Comprehensive Evaluation of Land Use Benefit in the Yellow River Basin from 1995 to 2018. Land. 2021; 10 (6):643.
Chicago/Turabian StyleZehui Chen; Qianxi Zhang; Fei Li; Jinli Shi. 2021. "Comprehensive Evaluation of Land Use Benefit in the Yellow River Basin from 1995 to 2018." Land 10, no. 6: 643.
Agricultural development is facing two problems: insufficient grain production and low profit of farmers. There is a contradiction between the government’s goal of increasing production and the farmer’s goal of increasing profit. Exploring the appropriate management scale of farmland under different objectives is of great significance to alleviate the conflict of interests between the government and farmers. In this study the Cobb-Douglas production function model was used to measure the appropriate management scale of farmland under different objectives in Shaanxi Province and analyze the regional differences. Under the two objectives, the appropriate management scale of the Loess Plateau was the largest in the three regions, followed by Qinba Mountains and Guanzhong Plain. Farmland area and quality were the main influencing factors for the appropriate management scale of farmland under the goal of maximizing the farmland yield, while the nonagricultural employment rate and farmland transfer rate were the main influencing factors under the goal of maximizing farmers’ profits. It is easy for Shaanxi Province to increase farmers’ profits, but more land needed to be transferred to increase farmland yield. These results suggest that in order to balance the goal of increasing yield and profit, the transfer of rural surplus labor should be promoted, and the nonagricultural employment rate should be improved. In Loess Plateau, restoring the ecological environment and enhancing the farmland quality. In Guanzhong Plain, avoiding urban land encroachment on farmland. In Qinba Mountains, developing farming techniques and moderately increasing the intensity of farmland exploit.
Qianxi Zhang; Zehui Chen; Fei Li. Appropriate Management Scale of Farmland and Regional Differences under Different Objectives in Shaanxi Province, China. Land 2021, 10, 314 .
AMA StyleQianxi Zhang, Zehui Chen, Fei Li. Appropriate Management Scale of Farmland and Regional Differences under Different Objectives in Shaanxi Province, China. Land. 2021; 10 (3):314.
Chicago/Turabian StyleQianxi Zhang; Zehui Chen; Fei Li. 2021. "Appropriate Management Scale of Farmland and Regional Differences under Different Objectives in Shaanxi Province, China." Land 10, no. 3: 314.
Grain production space reconstruction referred to the changes in the quantity, quality and pattern of grain production space caused by functional tradeoffs and conflicts between grain production space, urban-rural development space, and ecological service space. Exploring tradeoffs between land system functions caused by grain production space reconstruction was particularly important for ensuring food security, promoting the construction of ecological civilization, and achieving sustainable development. Therefore, this study identified four relationships of land system functions during the process of grain production space reconstruction (1980–2018) in China by using Set Pair Analysis. Research results showed that the reconstruction of grain production space was achieved mainly through three pathways: Grain for Green, deforestation and reclamation, and urban expansion. Generally, ecological service had spatial negative correlation with grain production, economic development and population carrying capacity (P < 0.01), but grain production, economic development and population carrying capacity were positively correlated with each other (P < 0.01). In the process of grain production space reconstruction, ecological services and economic development, ecological services and population carrying capacity had all shown inverse synergies; there was a tradeoff between grain production and ecological services, a codirectional tradeoff between grain production and economic development, but a strong synergy between economic development and population carrying capacity. However, the functions of land systems only appeared as synergies or tradeoffs, and there were no inverse synergies and codirectional tradeoffs in the separate processes of Grain for Green, deforestation and reclamation, and urban expansion. It can be concluded that the relationships between land system functions were relatively simple in a single process, but it became complex and diverse when multiple processes were integrated for system analysis.
Fei Li; Zhangxuan Qin; Xiaolin Liu; Zehui Chen; Xiaoli Wei; Qiumeng Zhang; Min Lei. Grain production space reconstruction and land system function tradeoffs in China. Geography and Sustainability 2021, 2, 22 -30.
AMA StyleFei Li, Zhangxuan Qin, Xiaolin Liu, Zehui Chen, Xiaoli Wei, Qiumeng Zhang, Min Lei. Grain production space reconstruction and land system function tradeoffs in China. Geography and Sustainability. 2021; 2 (1):22-30.
Chicago/Turabian StyleFei Li; Zhangxuan Qin; Xiaolin Liu; Zehui Chen; Xiaoli Wei; Qiumeng Zhang; Min Lei. 2021. "Grain production space reconstruction and land system function tradeoffs in China." Geography and Sustainability 2, no. 1: 22-30.
Qiu-Meng Zhang; Fang-She Yang; Fei Li. The grain production space reconstruction in China since the reform and opening up. JOURNAL OF NATURAL RESOURCES 2021, 36, 1426 -1438.
AMA StyleQiu-Meng Zhang, Fang-She Yang, Fei Li. The grain production space reconstruction in China since the reform and opening up. JOURNAL OF NATURAL RESOURCES. 2021; 36 (6):1426-1438.
Chicago/Turabian StyleQiu-Meng Zhang; Fang-She Yang; Fei Li. 2021. "The grain production space reconstruction in China since the reform and opening up." JOURNAL OF NATURAL RESOURCES 36, no. 6: 1426-1438.
Although land system research has made important progress in land change monitoring, long-term histories of land use change, land system change modeling, and case-study synthesis, it still faces some challenges in system integration and comprehensive analysis. To better understand and explore the comprehensiveness of land systems, system integration theory should be combined with system generation theory that emphasizes historical accumulation. Therefore, this paper revisits some of the basic connotations and theories of land system science by reviewing relevant research and proposes the concept of generated land systems based on system generation theory with an aim to providing a reference base for future research. As coupled human–environment systems are generated by mankind’s transformation, utilization, and adaptation of the land surface and its upper and lower spaces of Earth, generated land systems evolve in the mutual generation and restriction of the biophysical environment, land use, and social economy. The evolution forms of generated land systems can be classified as fluctuation, degradation, and optimization based on the ascendency and resilience of the system. The need for generated land systems to be multi-functional is what motivates the direction and form of generated land system evolution. Generation mechanism, process, adaptability, scale effect, and tele-coupling are important issues of generated land system research. In addition, how generated land systems can enter a new evolutionary cycle through functional transformation is also crucial to achieving sustainable management and utilization of land resources.
Fei Li; Meijun Zhou; Zhangxuan Qin. Generated land systems: recognition and prospects of land system science. Environmental Reviews 2020, 28, 199 -207.
AMA StyleFei Li, Meijun Zhou, Zhangxuan Qin. Generated land systems: recognition and prospects of land system science. Environmental Reviews. 2020; 28 (2):199-207.
Chicago/Turabian StyleFei Li; Meijun Zhou; Zhangxuan Qin. 2020. "Generated land systems: recognition and prospects of land system science." Environmental Reviews 28, no. 2: 199-207.
China, as one of the largest food consumers in the world, is currently experiencing obvious impacts of climate change. Exploring the impact of climate change on the production potential of maize, wheat, and rice in China is of great significance in adapting to climate change and safeguarding global food security. In this study the Global Agro-Ecological Zone (GAEZ) model and the Extreme-Point Symmetric Mode Decomposition (ESMD) model were used to explore the trends in production potential of China's three major crops in the context of climate change from 1960 to 2010. There was a quasi-3-year and quasi-5-year cycle in changes in maize, wheat, and rice production potential due to climate change in China. Climate change increased maize and rice production potential and reduced wheat production potential. The increase in minimum temperature was the main reason for the increased maize and rice production potential. Reduced wheat production potential was mainly caused by increased maximum temperature. Decreases in precipitation had a substantial negative impact on the production potential of all three crops. These results suggest that priority should be given to adjusting the structure of agricultural cultivation and appropriately expanding the planting area of maize and rice to adapt to climate change. Accelerating the construction of agricultural infrastructure to reduce the negative impact of declining precipitation and increasing daytime temperature on agriculture is also a high priority in order to safeguard food security.
Li Fei; Zhou Meijun; Shao Jiaqi; Chen Zehui; Wei Xiaoli; Yang Jiuchun. Maize, wheat and rice production potential changes in China under the background of climate change. Agricultural Systems 2020, 182, 102853 .
AMA StyleLi Fei, Zhou Meijun, Shao Jiaqi, Chen Zehui, Wei Xiaoli, Yang Jiuchun. Maize, wheat and rice production potential changes in China under the background of climate change. Agricultural Systems. 2020; 182 ():102853.
Chicago/Turabian StyleLi Fei; Zhou Meijun; Shao Jiaqi; Chen Zehui; Wei Xiaoli; Yang Jiuchun. 2020. "Maize, wheat and rice production potential changes in China under the background of climate change." Agricultural Systems 182, no. : 102853.
The climate change on the impact of grain production potential has significant regional differences. Researchers have studied the grain production potential of various crop combinations or focused on single crop types in a typical area; however, the regional differences of the climate change on the impact of grain production potential were neglected. This paper used the Global Agro-Ecological Zone (GAEZ 3.0) model to focus on the analysis what is the climate change on the impact of grain production potential in different geographic units (Northern Shaanxi Plateau, Guanzhong Basin, Qinba Mountain) in Shaanxi Province of China. The case showed that the precipitation (Pre) what made changes of grain production potential was the most important factor in different geographic units. The increase of Pre had a positive impact on the grain production potential in Northern Shaanxi Plateau and Guanzhong Basin. However, in Qinba Mountain, due to excessive Pre in the Qinba Mountains, the decrease of Pre had a certain positive impact on the grain production potential. The precipitation was less in the Northern Shaanxi Plateau; therefore, its major factors leading to changes of crop production were precipitation and rainfall days. The increase of the mean maximum temperature (Tmx) and the mean minimum temperature (Tmn) had a positive impact of the grain production potential in the Northern Shaanxi Plateau and Guanzhong Basin. The higher temperature had a negative impact on the grain production potential. In Qinba Mountain, the increase of the temperature has a certain negative impact on the grain production potential. It has more influence of Tmx in the Guanzhong Basin and Qinba Mountain rather than that in the Northern Shaanxi Plateau. Generally speaking, the major climatic factors leading grain production potential were Pre and Tmx in Guanzhong Basin and Qinba Mountain.
Ya Li; Fei Li; Fangshe Yang; Xudong Xie; Lichang Yin. Spatiotemporal impacts of climate change on food production: case study of Shaanxi Province, China. Environmental Science and Pollution Research 2020, 27, 19826 -19835.
AMA StyleYa Li, Fei Li, Fangshe Yang, Xudong Xie, Lichang Yin. Spatiotemporal impacts of climate change on food production: case study of Shaanxi Province, China. Environmental Science and Pollution Research. 2020; 27 (16):19826-19835.
Chicago/Turabian StyleYa Li; Fei Li; Fangshe Yang; Xudong Xie; Lichang Yin. 2020. "Spatiotemporal impacts of climate change on food production: case study of Shaanxi Province, China." Environmental Science and Pollution Research 27, no. 16: 19826-19835.
There were three basic forms of land system evolution: fluctuation, degradation and optimization. Based on the basic principles of system analysis, this study established a framework for analyzing the evolution form of land systems according to the sustainability and the relationship between ascendency and overhead, and then identified the evolution froms of land systems in Shaanxi Province. The results showed that the evolution of land systems in Shaanxi Province was in a fluctuation form and its sustainability showed a trend of increasing first and then decreasing between 1980 and 2015. The sustainability of land system evolution in Loess Plateau and Guanzhong Basin also increased first and then decreased, the changes in Loess Plateau were particularly significant and reached an optimization form during 1990–2000 and 2005–2010. The land system evolution in Guanzhong Basin in a less sustainable form of fluctuation after 2000. Land systems in Qinba Mountain were in an optimization form except for during 1980–1990 and 2005–2010. All three geographic units evolved in an optimization form between 1990 and 2000, and the sustainability of land system evolution in Shaanxi Province has increased from north to south both in 2000–2005 and 2010–2015; however, its sustainability weakened from north to south in 2005–2010. The verification of the results based on the information entropy change of the land systems showed that it was feasible and credible to distinguish the evolution form of land systems based on ascendency and overhead.
Face Li; Meijun Zhou; Jiaqi Shao; Zhangxuan Qin. Evolution forms of land systems based on ascendency and overhead: A case study of Shaanxi Province, China. Ecological Modelling 2020, 419, 108960 .
AMA StyleFace Li, Meijun Zhou, Jiaqi Shao, Zhangxuan Qin. Evolution forms of land systems based on ascendency and overhead: A case study of Shaanxi Province, China. Ecological Modelling. 2020; 419 ():108960.
Chicago/Turabian StyleFace Li; Meijun Zhou; Jiaqi Shao; Zhangxuan Qin. 2020. "Evolution forms of land systems based on ascendency and overhead: A case study of Shaanxi Province, China." Ecological Modelling 419, no. : 108960.
Meijun Zhou; Fei Li; Jiaqi Shao; Haijuan Yang. Change characteristics of maize production potential under the background of climate change in China. 地理科学进展 2020, 39, 443 -453.
AMA StyleMeijun Zhou, Fei Li, Jiaqi Shao, Haijuan Yang. Change characteristics of maize production potential under the background of climate change in China. 地理科学进展. 2020; 39 (3):443-453.
Chicago/Turabian StyleMeijun Zhou; Fei Li; Jiaqi Shao; Haijuan Yang. 2020. "Change characteristics of maize production potential under the background of climate change in China." 地理科学进展 39, no. 3: 443-453.
Land production potential (LPP) was the maximum grain yield in one year that can be produced by land under the limitations of climate conditions and in the absence of pests and diseases and other factors. Whether climate change was increasing or reducing the LPP in a given region was uncertain. Therefore, Shaanxi Province was selected to analyze the regional differences in climate change and its effects on LPP change and to identify the main climatic factor restricting LPP in different regions by combining Global Agro-Ecological Zone (GAEZ) model with the Geodetector model. Results showed that the temperature in Shaanxi Province showed an upward trend in 2000–2015; the rise in temperature to the north of Qinling Mountain (QM) was less than that to the south of QM. However, rising temperature had a yield-improving effect to the north of QM and a yield-decreasing effect to the south of QM. There was a precipitation increase in Arid Sandy (AS) area and Loess Plateau (LP), and the precipitation reduced in all other geographical units. The increase in LPP of Shaanxi mostly was caused by increasing precipitation. However, precipitation was declined and reduced LPP to the south of QM; that is, precipitation decline was the dominated climatic factor for LPP decrease in QM, Hanjiang Basin (HB), and Daba Mountain (DM). To the north of QM, LPP in AS, LP, and Guanzhong Plain (GP) both dramatically increased, mainly improved by rising temperature, increasing precipitation, and rising temperature, respectively.
Li Fei; Zhou Meijun; Hu Min. Climate change in different geographical units and its impact on land production potential: a case study of Shaanxi Province, China. Environmental Science and Pollution Research 2019, 26, 22273 -22283.
AMA StyleLi Fei, Zhou Meijun, Hu Min. Climate change in different geographical units and its impact on land production potential: a case study of Shaanxi Province, China. Environmental Science and Pollution Research. 2019; 26 (22):22273-22283.
Chicago/Turabian StyleLi Fei; Zhou Meijun; Hu Min. 2019. "Climate change in different geographical units and its impact on land production potential: a case study of Shaanxi Province, China." Environmental Science and Pollution Research 26, no. 22: 22273-22283.
Land use change has an impact on the ecosystem service value because it changes the structure and function of ecosystems. This paper analyzed the changes in land use during the period from 2000 to 2015 in Shangzhou district, and used the equivalent value of ecological services per unit area of land ecosystem combining the natural and economic conditions of Shangzhou district. Based on this method, the ecological service value of Shangzhou district was estimated, and the impact of land use change on the ecological service value was analyzed. The results showed that: (1) the main types of land use in Shangzhou district were grassland, woodland and farmland, among which the contribution rate of woodland to the value of local ecosystem services was the highest; (2) the overall trend in the ecosystem service value in Shangzhou district increased between 2000 and 2015, from 10.74 × 108 yuan in 2000 to 20.32 × 108 yuan in 2015, which is the result of the combined effects of regional economic development and changes in the natural environment and land use patterns; and (3) the main reason for the value increase of ecosystem services in Shangzhou district between 2000 and 2015 was that the grain-for-green policy transformed a considerable amount of farmland into woodland, while the main reasons for a decline in value was the expansion of built-up land that occupied other types of land.
Keyue Yuan; Fei Li; Haijuan Yang; Yiming Wang. The Influence of Land Use Change on Ecosystem Service Value in Shangzhou District. International Journal of Environmental Research and Public Health 2019, 16, 1321 .
AMA StyleKeyue Yuan, Fei Li, Haijuan Yang, Yiming Wang. The Influence of Land Use Change on Ecosystem Service Value in Shangzhou District. International Journal of Environmental Research and Public Health. 2019; 16 (8):1321.
Chicago/Turabian StyleKeyue Yuan; Fei Li; Haijuan Yang; Yiming Wang. 2019. "The Influence of Land Use Change on Ecosystem Service Value in Shangzhou District." International Journal of Environmental Research and Public Health 16, no. 8: 1321.
Grain production potential (GrPP) is the maximum production in 1 year that can be achieved by land use under the limitations of climate conditions and in the absence of pests and diseases and other factors. Regional GrPP can change over time and there is an urgent need to identify the main factors affecting regional differences in such changes. Therefore, changes in GrPP were studied for six geographical units in Shaanxi Province, with summer maize and winter wheat as the main grain crops. Changes of GrPP during 2000–2015 were simulated by the global aro-ecological zone model. Analysis of modelled GrPP driven by observed changes in climate and land use suggest that over this period GrPP increased to the north but declined to the south of the Qinling Mountains. This is driven mainly by past changes in climate, with modelled GrPP more sensitive to changes in precipitation than temperature in all geographical units except one. Climate change was the main factor affecting GrPP in all geographical units except one; however, model prediction suggests that land use changes had a clear yield-reducing effect in three of the units. It is the conversion from cultivated land to construction land, grassland and woodland that led to the greatest declines in GrPP in these three geographical units. In order to ensure the stable development of regional agriculture and food security, Shaanxi Province should focus on tapping GrPP north of the Qinling Mountains and increasing the conversion rate of GrPP to actual production.
Li Fei; Li Ya; Ma Shuang. Regional difference of grain production potential change and its influencing factors: a case-study of Shaanxi Province, China. The Journal of Agricultural Science 2019, 157, 1 -11.
AMA StyleLi Fei, Li Ya, Ma Shuang. Regional difference of grain production potential change and its influencing factors: a case-study of Shaanxi Province, China. The Journal of Agricultural Science. 2019; 157 (1):1-11.
Chicago/Turabian StyleLi Fei; Li Ya; Ma Shuang. 2019. "Regional difference of grain production potential change and its influencing factors: a case-study of Shaanxi Province, China." The Journal of Agricultural Science 157, no. 1: 1-11.
During the last 40 years, the quantity and spatial patterns of farmland in Western Jilin have changed dramatically, which has had a great impact on soybean production potential. This study used one of the most advanced crop production potential models, the Global Agro-Ecological Zones model, to calculate the soybean production potential in Western Jilin based on meteorological, topography, soil and land use data, and analyzed the impact of farmland change on soybean production potential during 1975–2013. The main conclusions were the following: first, the total soybean production potential in Western Jilin in 2013 was 8.92 million tonnes, and the average soybean production potential was 1612 kg/ha. The production potential of eastern area was higher than the other areas of Western Jilin. Second, farmland change led to a growth of 3.30 million tonnes in soybean production potential between 1975 and 2000, and a decrease of 1.03 million tonnes between 2000 and 2013. Third, taking account of two situations of farmland change, the conversion between dryland and other categories, and the change of irrigation percentage led to the total soybean production potential in Western Jilin increased by 2.31 and only 0.28 million tonnes respectively between 1975 and 2000, and increased by 0.12 and 0.29 million tonnes respectively between 2000 and 2013. In general, the increase of soybean potential production was mainly due to grassland and woodland reclamation. The results of this study would be a good guideline for protecting safe baseline of farmland, managing land resources, and ensuring continuity and stability of soybean supply and food security.
Luoman Pu; Shuwen Zhang; Fei Li; Ranghu Wang; Jiuchun Yang; Liping Chang. Impact of Farmland Change on Soybean Production Potential in Recent 40 Years: A Case Study in Western Jilin, China. International Journal of Environmental Research and Public Health 2018, 15, 1522 .
AMA StyleLuoman Pu, Shuwen Zhang, Fei Li, Ranghu Wang, Jiuchun Yang, Liping Chang. Impact of Farmland Change on Soybean Production Potential in Recent 40 Years: A Case Study in Western Jilin, China. International Journal of Environmental Research and Public Health. 2018; 15 (7):1522.
Chicago/Turabian StyleLuoman Pu; Shuwen Zhang; Fei Li; Ranghu Wang; Jiuchun Yang; Liping Chang. 2018. "Impact of Farmland Change on Soybean Production Potential in Recent 40 Years: A Case Study in Western Jilin, China." International Journal of Environmental Research and Public Health 15, no. 7: 1522.
In recent 40 years, the quantity and spatial patterns of farmland in Western Jilin have changed dramatically, which had great impact on soybean production potential. This study used one of the most advanced crop production potential models, the Global Agro-cological Zones model, to calculate the soybean production potential in Western Jilin based on meteorological, terrain, soil and land use data, and analyzed impact of farmland change on soybean production potential during 1975-2013. The main conclusions were the following. First, the total soybean production potential in Western Jilin in 2013 was 89.22 thousand tons. The production potential of eastern area was higher than the other areas of Western Jilin. Second, farmland change led to a growth of 33.03 thousand tons in soybean production potential between 1975 and 2000, and a decrease of 10.30 thousand tons between 2000 and 2013. Third, taking account of two situations of farmland change, the conversion between dryland and other categories, and the change of irrigation percentage led to the total soybean production potential in Western Jilin increased by 23.13 and only 2.87 thousand tons respectively between 1975 and 2000, and increased by 1.13 and 2.81 thousand tons respectively between 2000 and 2013. In general, the increase of soybean potential production was mainly due to grassland and woodland reclamation. The results of this study would be a good reference for protecting safe baseline of farmland, managing land resources, and ensuring continuity and stability of soybean supply and food security.
Luoman Pu; Shuwen Zhang; Fei Li; Ranghu Wang; Jiuchun Yang; Liping Chang. Impact of Farmland Change on Soybean Production Potential in Recent 40 Years: a Case Study in Western Jilin, China. 2018, 1 .
AMA StyleLuoman Pu, Shuwen Zhang, Fei Li, Ranghu Wang, Jiuchun Yang, Liping Chang. Impact of Farmland Change on Soybean Production Potential in Recent 40 Years: a Case Study in Western Jilin, China. . 2018; ():1.
Chicago/Turabian StyleLuoman Pu; Shuwen Zhang; Fei Li; Ranghu Wang; Jiuchun Yang; Liping Chang. 2018. "Impact of Farmland Change on Soybean Production Potential in Recent 40 Years: a Case Study in Western Jilin, China." , no. : 1.
This study analyzed the effects of land use change in West Jilin on ecosystem services value (ESV) in a long time scales (1976–2013) based on Pay Index. The results showed that the main characteristic of land use change in study area was area reduction in grassland and marsh, and area increase in arable land and alkali-land. However, land use change in Period 1 (1976–2000) got a faster rate than in Period 2 (2000–2013). The ESV in West Jilin mostly contributed by marsh, farmland, water, and grassland. The total value of ecosystem services increased from 21.65 billion yuan to 64.28 billion yuan during 1976–2013. Based on the Pay Index in 2013, ESV had an average annual reduction of 170.4 million yuan in Period 1, mainly caused by the conversion of marsh and woodland to other land use types. ESV in West Jilin lost about 115.02 million yuan per year in Period 2; the most important reason was that marsh converted to other types of land use. From the point of view of ecological service type, value of supporting service, regulating service, and cultural service was sustained or reduced both in Period 1 and in Period 2. However, the change of provisioning service value showed a slight upward trend during 1976–2013. Overall, land use change in West Jilin in recent 37 years lead to a continuous reduction in regional ESV, especially in Period 1.
Li Fei; Zhang Shuwen; Yuan Keyue. Land use change in farming-pastoral ecotone and its effects on ecosystem services value: A case study in West Jilin, China. Human and Ecological Risk Assessment: An International Journal 2017, 24, 551 -566.
AMA StyleLi Fei, Zhang Shuwen, Yuan Keyue. Land use change in farming-pastoral ecotone and its effects on ecosystem services value: A case study in West Jilin, China. Human and Ecological Risk Assessment: An International Journal. 2017; 24 (2):551-566.
Chicago/Turabian StyleLi Fei; Zhang Shuwen; Yuan Keyue. 2017. "Land use change in farming-pastoral ecotone and its effects on ecosystem services value: A case study in West Jilin, China." Human and Ecological Risk Assessment: An International Journal 24, no. 2: 551-566.
Li Fei; Zhang Shuwen; Yang Jiuchun; Bu Kun; Wang Qing; Tang Junmei; Face Li. The effects of population density changes on ecosystem services value: A case study in Western Jilin, China. Ecological Indicators 2016, 61, 328 -337.
AMA StyleLi Fei, Zhang Shuwen, Yang Jiuchun, Bu Kun, Wang Qing, Tang Junmei, Face Li. The effects of population density changes on ecosystem services value: A case study in Western Jilin, China. Ecological Indicators. 2016; 61 ():328-337.
Chicago/Turabian StyleLi Fei; Zhang Shuwen; Yang Jiuchun; Bu Kun; Wang Qing; Tang Junmei; Face Li. 2016. "The effects of population density changes on ecosystem services value: A case study in Western Jilin, China." Ecological Indicators 61, no. : 328-337.