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Dr. Erli Dan
North China Electric Power University; Beijing, China

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0 Sustainability
0 Sustainability accounting
0 agricultural non-point pollution
0 Sustaibilty development
0 environment and resource

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Journal article
Published: 18 February 2021 in Sustainability
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Although there have been many studies on the degree of overfertilization, there are few systematic comparative analyses on the degree of overfertilization of three major grain crops (wheat, rice, and maize) over a long time span in recent years. Whereas the studies of the influence of government efforts, individual characteristics of farmers, and economic factors on farmer’s fertilization decision ignored the financial consideration of farmers. This study aims to systematically investigate the degree of overfertilization in the production of three major grain crops in 21 provinces of China from 2004 to 2018 by developing a panel-data model, and explores the impact of financial factors on overfertilization by applying Arellano-Bover/Blundell-Bond linear dynamic panel-data estimation. The results showed an upward trend in overfertilization in the production of three grain crops from 2010 to 2018, although a decline between 2007 and 2009 may indicate that the financial crisis had a short-term impact on overfertilization. Overfertilization varied across regions, and chemical fertilizers were applied most excessively in wheat production in the Huang-Huai-Hai region and in maize in Southwest China. The analysis of financial factors showed that cash earnings from wheat and maize positively affected overfertilization, whereas cash cost and farmers’ income had opposite effects. In fact, farmers value cash earnings and cash costs rather than the time value of money. In addition, the sensitivity and cautiousness of farmers regarding economic events may indicate that farmers have a certain degree of economic rationality regarding fertilizer input in several provinces, such as Anhui and Yunnan. The study provides necessary supplements to existing research on the influence factors of overfertilization and has implications for improving the design of fertilizer sales collection methods by the government and the financial service sector.

ACS Style

Jianfei Shen; Erli Dan; Yalin Lu; Yiwei Guo. Exploratory Research on Overfertilization in Grain Production and Its Relationship with Financial Factors: Evidence from China. Sustainability 2021, 13, 2176 .

AMA Style

Jianfei Shen, Erli Dan, Yalin Lu, Yiwei Guo. Exploratory Research on Overfertilization in Grain Production and Its Relationship with Financial Factors: Evidence from China. Sustainability. 2021; 13 (4):2176.

Chicago/Turabian Style

Jianfei Shen; Erli Dan; Yalin Lu; Yiwei Guo. 2021. "Exploratory Research on Overfertilization in Grain Production and Its Relationship with Financial Factors: Evidence from China." Sustainability 13, no. 4: 2176.

Journal article
Published: 24 February 2018 in Sustainability
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The total grid-connected installed capacity of wind power in northwest China has grown from 16,260 MW in 2013 to 43,290 MW in 2016; an increase of 88.7% each year. However, this region has suffered from increasingly serious wind curtailment since 2014, and the wind curtailment amount accounts for nearly a half of China’s total. The wind curtailment rate of Gansu Province, Xinjiang Uygur Autonomous Region and Ningxia Hui Autonomous Region in this area has increased and remains high. This paper constructs an analytical model to explore the reasons of the high wind curtailment of these three provinces from the four aspects of the wind power supply capacity, demand, grid transmission capacity, power system flexibility and market mechanism and laws. The results show that the relationship between the wind energy distribution and supply and the local load is incompatible, which is the source causing the high wind curtailment in northwest China. On the one hand, the game between the local government and developers has driven the development of wind power bases. On the other hand, the electricity sector is growing slowly and oversupply of electricity is seen in many areas of China. The wind power grid of northwest China not only faces limit of grid transmission capacity, but also constraint of insufficient flexibility of the electricity system. Presently, China has not set up a market mechanism and subsidy mechanism for the peak load adjustment, thus the thermal power companies lack motivation to voluntarily adjust the peak load. Moreover, the regional segregation and market barriers are also obstacles for the wind power outward transmission.

ACS Style

Guoliang Luo; Erli Dan; Xiaochun Zhang; Yiwei Guo. Why the Wind Curtailment of Northwest China Remains High. Sustainability 2018, 10, 570 .

AMA Style

Guoliang Luo, Erli Dan, Xiaochun Zhang, Yiwei Guo. Why the Wind Curtailment of Northwest China Remains High. Sustainability. 2018; 10 (3):570.

Chicago/Turabian Style

Guoliang Luo; Erli Dan; Xiaochun Zhang; Yiwei Guo. 2018. "Why the Wind Curtailment of Northwest China Remains High." Sustainability 10, no. 3: 570.

Journal article
Published: 19 September 2017 in Sustainability
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In China, due to forest resource scarcity, the problem of timber supply shortage has been around for a long time. The recycling and utilization of tree residues may effectively alleviate the situation and will contribute to emissions reduction and environmental protection. Therefore, this study aims to identify the tree residue resources and estimates their quantity in order to provide a basis for related research, such as its comprehensive utilization. This study redefines and reclassifies tree residue resources, in particular, it adds three tree residue resources: tree seedling residue, sanitation felling residue and urban greening and trimmings. This study divides the forest final felling and bucking residue resource into the stumpage section and the non-stumpage section, respectively, scientifically selects values of the percent of merchantable volume and the proportion of non-stumpage biomass of the stumpage volume, separately estimates the quantity of bamboo felling, bucking and processing residues, classifies the forest product processing zone into the sawing section and the forest product processing section, and estimates the current waste wood recycling quantity by tracking the timber output of previous years. The estimation results for tree residue quantity indicate that China’s tree residue reached 511.63 Mt in 2015, of which the forest tending and thinning residue was 406.76 Mt, nearly four-fifths of the total tree residue. Among the 31 provinces (municipalities and autonomous regions), more than half (55.57%) of the potential reserve of tree residues is distributed in the 13 provinces of southern China, 25% in the 10 provinces in the north, and approximately 20% in the plain and hilly areas. During the 12th Five-Year Plan period, the tree residue reserves showed positive growth. In the past three years (2014–2016), all state-owned forestry farms and collective-owned natural forests stopped commercial felling gradually, which directly resulted in a reduction of log output, thereby also curbing the growth of tree residue to a certain extent. Since the log output has ceased to further decline from 2017, it is predicted that China’s tree residue will continue the upward trend.

ACS Style

Yiwei Guo; Erli Dan; Xiaoyan Liu; Zhuo Kong; Feng Shi; Changliang Jie. China’s Tree Residue Sources and Quantity Estimation. Sustainability 2017, 9, 1659 .

AMA Style

Yiwei Guo, Erli Dan, Xiaoyan Liu, Zhuo Kong, Feng Shi, Changliang Jie. China’s Tree Residue Sources and Quantity Estimation. Sustainability. 2017; 9 (9):1659.

Chicago/Turabian Style

Yiwei Guo; Erli Dan; Xiaoyan Liu; Zhuo Kong; Feng Shi; Changliang Jie. 2017. "China’s Tree Residue Sources and Quantity Estimation." Sustainability 9, no. 9: 1659.

Conference paper
Published: 01 January 2017 in Proceedings of the 2017 International Conference on Education Science and Economic Management (ICESEM 2017)
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ACS Style

Erli Dan; Xingxing Tan; Yiwei Guo. Research on Master of Engineering Management in China. Proceedings of the 2017 International Conference on Education Science and Economic Management (ICESEM 2017) 2017, 1 .

AMA Style

Erli Dan, Xingxing Tan, Yiwei Guo. Research on Master of Engineering Management in China. Proceedings of the 2017 International Conference on Education Science and Economic Management (ICESEM 2017). 2017; ():1.

Chicago/Turabian Style

Erli Dan; Xingxing Tan; Yiwei Guo. 2017. "Research on Master of Engineering Management in China." Proceedings of the 2017 International Conference on Education Science and Economic Management (ICESEM 2017) , no. : 1.