This page has only limited features, please log in for full access.
In response to land degradation and the decline of farmers’ income, some low quality croplands were converted to forage or grassland in Northeast China. However, it is unclear how such land use conversions influence soil nutrients. The primary objective of this study was to investigate the influences of short term conversion of cropland to alfalfa forage, monoculture Leymus chinensis grassland, monoculture Leymus chinensis grassland for hay, and successional regrowth grassland on the labile carbon and available nutrients of saline sodic soils in northeastern China. Soil labile oxidizable carbon and three soil available nutrients (available nitrogen, available phosphorus, and available potassium) were determined at the 0–50 cm depth in the five land uses. Results showed that the treatments of alfalfa forage, monoculture grassland, monoculture grassland for hay, and successional regrowth grassland increased the soil labile oxidizable carbon contents (by 32%, 28%, 15%, and 32%, respectively) and decreased the available nitrogen contents (by 15%, 19%, 34%, and 27%, respectively) in the 0–50 cm depth compared with cropland, while the differences in the contents of available phosphorus and available potassium were less pronounced. No significant differences in stratification ratios of soil labile carbon and available nutrients, the geometric means of soil labile carbon and available nutrients, and the sum scores of soil labile carbon and available nutrients were observed among the five land use treatments except the stratification ratio of 0–10/20–30 cm for available phosphorus and the values of the sum scores of soil labile carbon and available nutrients in the 0–10 cm depth. These findings suggest that short term conversions of cropland to revegetation have limited influences on the soil labile carbon and available nutrients of sodic soils in northeastern China.
Pujia Yu; Xuguang Tang; Shiwei Liu; Wenxin Liu; Aichun Zhang. Short Term Effects of Revegetation on Labile Carbon and Available Nutrients of Sodic Soils in Northeast China. Land 2020, 9, 10 .
AMA StylePujia Yu, Xuguang Tang, Shiwei Liu, Wenxin Liu, Aichun Zhang. Short Term Effects of Revegetation on Labile Carbon and Available Nutrients of Sodic Soils in Northeast China. Land. 2020; 9 (1):10.
Chicago/Turabian StylePujia Yu; Xuguang Tang; Shiwei Liu; Wenxin Liu; Aichun Zhang. 2020. "Short Term Effects of Revegetation on Labile Carbon and Available Nutrients of Sodic Soils in Northeast China." Land 9, no. 1: 10.
Farmers are the main land managers, and their production decisions crucially affect crop outputs and farmland preservation. Understanding the motivations and factors underlying farmers’ decision making is a fundamental to implementation polices of government. This study analyzed factors that influence farmers’ choice of corn reduction under the China’s new agriculture policy in the ‘Liandaowan’ areas of Northeast China. This study collected data from 106 randomly selected households in 34 villages in ‘Liandaowan’ areas of Northeast China using a semi-structured questionnaire. Results showed that the Chinese corn structural adjustment plan confronted with many constraints, and most of farmers insist on planting corn. Drought and low accumulated temperature, no suitable substitution crop, farmers’ preferences, farmers’ education and age, relatively high comparative benefit of corn, the availability of machinery and technical assistance, subsidies and low family incomes all influence farmers’ choice of corn substitution. Based on our experimental results, we derived important policy implications for promoting corn structural adjustment incorporate increase crop diversity, promote soybean and corn rotation, provide adequate agricultural extension services, and increase the corn substitution subsidies and improve farmers’ income.
Shiwei Liu; Pingyu Zhang; Wenxin Liu; Xiuli He. Key Factors Affecting Farmers’ Choice of Corn Reduction under the China’s New Agriculture Policy in the ‘Liandaowan’ Areas, Northeast China. Chinese Geographical Science 2019, 29, 1039 -1051.
AMA StyleShiwei Liu, Pingyu Zhang, Wenxin Liu, Xiuli He. Key Factors Affecting Farmers’ Choice of Corn Reduction under the China’s New Agriculture Policy in the ‘Liandaowan’ Areas, Northeast China. Chinese Geographical Science. 2019; 29 (6):1039-1051.
Chicago/Turabian StyleShiwei Liu; Pingyu Zhang; Wenxin Liu; Xiuli He. 2019. "Key Factors Affecting Farmers’ Choice of Corn Reduction under the China’s New Agriculture Policy in the ‘Liandaowan’ Areas, Northeast China." Chinese Geographical Science 29, no. 6: 1039-1051.
This paper quantitatively analyzes the economic resilience of resource-based cities (RBCs) in Northeast China in terms of resistance and recoverability during two economic crises: the Asian financial crisis and the global financial crisis. Moreover, it analyzes the main factors that affected regional resilience. There are three main findings. First, the RBCs in general demonstrated poor resistance during both recessions, but there were variations among the different types of RBCs. Petroleum and metal cities demonstrated the most resistance, whereas coal cities performed the worst. Second, the influential factors affecting economic resilience varied across the two economic cycles, but location advantage, research and development (R and D) intensity, foreign trade dependence ratio, and supporting policies had positive effects on resilience during both economic cycles, while the proportion of employed persons in resource industries had a negative effect. Industrial diversity had a weak and ambiguous effect on resilience. Third, the secondary industry was more resilient during the Asian financial crisis, but the tertiary industry was more resilient during the global financial crisis. This shift may be attributed to both the nature of the crises and the strength of the sectors at the time of the crises.
Juntao Tan; Kevin Lo; Fangdao Qiu; Wenxin Liu; Jing Li; Pingyu Zhang. Regional Economic Resilience: Resistance and Recoverability of Resource-Based Cities during Economic Crises in Northeast China. Sustainability 2017, 9, 2136 .
AMA StyleJuntao Tan, Kevin Lo, Fangdao Qiu, Wenxin Liu, Jing Li, Pingyu Zhang. Regional Economic Resilience: Resistance and Recoverability of Resource-Based Cities during Economic Crises in Northeast China. Sustainability. 2017; 9 (12):2136.
Chicago/Turabian StyleJuntao Tan; Kevin Lo; Fangdao Qiu; Wenxin Liu; Jing Li; Pingyu Zhang. 2017. "Regional Economic Resilience: Resistance and Recoverability of Resource-Based Cities during Economic Crises in Northeast China." Sustainability 9, no. 12: 2136.