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[1]FAN Shuping,LI Peng,YU Boping,et al.Study on Obstacle Diagnosis and Regulation Strategy of Cultivated Land Ecological Security in Main Grain Producing Areas[J].Research of Soil and Water Conservation,2023,30(01):408-417.[doi:10.13869/j.cnki.rswc.2023.01.029]

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Study on Obstacle Diagnosis and Regulation Strategy of Cultivated Land Ecological Security in Main Grain Producing Areas

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 30 Number of periods: 2023 01 Page number: 408-417 Column: Public date: 2023-01-10

Title:: Study on Obstacle Diagnosis and Regulation Strategy of Cultivated Land Ecological Security in Main Grain Producing Areas

Author(s):: FAN Shuping¹, LI Peng¹, YU Boping¹, MI Yishi¹, ZHANG Hongmei², WU Nan³, CAI Qingyu¹; (1.School of Economics and Management, Anhui Agricultural University, Hefei 230036, China; 2.Key Laboratory of JiangHuai Arable Land Resources Protection and Eco-restoration, Anhui Provincial Institute of Land Surveying and Planning, Hefei 230601, China; 3.Anhui Academy of Environmental Science, Hefei 230071, China)

Keywords:: cultivated land; ecological safety; obstacle diagnosis; regulation strategy; main grain producing areas; Anhui Province

CLC:: F304.5

DOI:: 10.13869/j.cnki.rswc.2023.01.029

Abstract:: As the core protection task of ‘three integration' of cultivated land, ecological security has attracted more and more attention from the government, the public and academia. Cultivated land ecological security evaluation is regarded as the key technology and important basis. The cultivated land ecological security evaluation index system was constructed based on the PSR model. Taking Anhui Province, the main national grain producing area, as an example, we comprehensively used the improved entropy weight method, TOPSIS model, ESDA model and obstacle diagnosis model to evaluate the cultivated land ecological security in Anhui Province since 2000 and three years at the municipal level in 2000, 2010 and 2018, and to analyze the temporal and spatial differentiation characteristics of cultivated land ecological security, further to diagnose cultivated land ecological barrier factors and corresponding control strategies. The results show that:(1)the ecological security of cultivated land in Anhui Province had a certain fluctuation, showing an upward trend, from 0.234 1 in 2000 to 0.724 7 in 2018, which could be roughly divided into low shock stage, rapid growth stage and high climbing stage;(2)over the past 20 years, the state of cultivated land ecological security had further shown an unbalanced and unbalanced evolution trend, resulting in significant differences in the spatial pattern of cultivated land ecological security in the whole province; in particular, the spatial concentration areas of high-risk and security areas had changed greatly, basically showing a spatial gradient pattern of high security in southern Anhui and transition from central Anhui to northern Anhui, the spatial agglomeration of cultivated land ecological security was not significant;(3)from the perspective of the whole province, the obstacle factors were mainly the response criteria layer such as greening coverage rate and sewage treatment rate of built-up areas, and gradual change to the status criteria layer and pressure criteria layer such as multiple cropping index, grain output per unit cultivated land, per capita construction land area, population density and urbanization level; from the perspective of city level, the obstacle factors of provincial capitals and urban agglomerations along the Yangtze River were mainly economic density, urbanization level and per capita resource proportion; the obstacle factors of concentrated and contiguous areas of cultivated lands in northern, western and eastern Anhui were mainly agricultural film load, pesticide and chemical fertilizer load per unit cultivated land, per capita water resources, etc.; the obstacle factors of mountainous and hilly areas in southern and western Anhui were per capita cultivated land area, cultivated land reclamation rate and multiple cropping index, etc. This research puts forward the regulation strategies to improve the ecological security of cultivated land, such as implementing the dynamic balance of the total amount of cultivated land, promoting the comprehensive improvement of the whole region, improving the awareness of cultivated land ecological security protection and exploring the implementation of cultivated land ecological security compensation.

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Last Update: 2023-01-10