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[1]YANG jun,SONG Zhenjiang,LI Zheng.Assessment of Cultivated Land Ecological Safety Based on PSR Method —The Case Study of Main Grain Production Area of the Lower Yangtze Region[J].Research of Soil and Water Conservation,2017,24(03):301-307,313.

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Assessment of Cultivated Land Ecological Safety Based on PSR Method —The Case Study of Main Grain Production Area of the Lower Yangtze Region

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 24 Number of periods: 2017 03 Page number: 301-307,313 Column: Public date: 2017-06-28

Title:: Assessment of Cultivated Land Ecological Safety Based on PSR Method —The Case Study of Main Grain Production Area of the Lower Yangtze Region

Author(s):: YANG jun^1,2, SONG Zhenjiang^1,2, LI Zheng³; 1. Faculty of Geomatics, East China University of Technology, Nanchang 330013, China;
2. Key Laboratory of Watershed Ecology and Geographical Environment Monitoring, National Administration of Surveying, Mapping and Geoinformation, Nanchang 330013, China;
3. College of Economics and Management, East China University of Technology, Nanchang 330013, China

Keywords:: Lower Yangtze region; main grain production area; PSR Method; cultivated land ecological safety

CLC:: F301.24

DOI:: -

Abstract:: The study of cultivated land ecological safety in the Lower Yangtze region aims to explore the present situation, and to explore the internal mechanism among the influencing factors on cultivated land ecological safety through the analysis. The values of cultivated land ecological safety was measured through the analysis of Pressure—State—Response. The variable system consists of 36 variables, such as COD load per unit area, SO₂ load per unit area, cropland pressure index and so on. Then, the progress of measurement consists of some parts, which are value transformation, calculating the comprehensive evaluation value and coordination degree. The results show that the comprehensive evaluation level of cultivated land ecological safety in Poyang Plain—Ganfu Plain—Jitai Basin—Main grain producing area of Western Jiangxi is the highest among 5 areas. The pressure of cultivated land ecological safety in Poyang Plain—Ganfu Plain—Jitai Basin—Main grain producing area is also higher than others. The response system of cultivated land ecological safety in the study area is weak except Jianghuai Plain(Jiangsu Province). With methods of analysis, the conclusion has three parts. (1) The economic development mode has a relevantly effect on cultivated land ecological safety. (2) Topography and hydrothermal conditions also have an inherent effect on cultivated land ecological safety. (3) Pollution management on local conditions is a necessary step in the progress of cultivated land ecological mitigation and management.

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