Spatiotemporal Variations and Obstacle Factors of Cultivated Land Ecological Security in Main Grain-Producing Areas of Yellow River Basin
1.School of Agriculture and Rural Development,Henan University of Economics and Law,Zhengzhou 450046,China
2.State Key Laboratory of Soil and Water Conservation and Desertification Control,College of Soil and;Water Conservation Science and Engineering (Institute of Soil and Water Conservation),Northwest A&F;University,Yangling,Shaanxi 712100,China
3.School of Urban and Rural Planning,Henan University of Economics and Law,Zhengzhou 450046,China
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