Comprehensive Benefits of the Three-dimensional System of Food Security,Economic Development,and Ecological Protection under the Rice-crayfish Co-cropping Model:A Case Study of Qianjiang City in Hubei Province
Comprehensive Benefits of the Three-dimensional System of Food Security,Economic Development,and Ecological Protection under the Rice-crayfish Co-cropping Model:A Case Study of Qianjiang City in Hubei Province
As an emerging agricultural model,the rice-crayfish co-cropping model is considered as a powerful attempt to achieve sustainable agricultural development.This study aims to explore the impact of the rice-crayfish co-cropping model on the comprehensive development benefits in local area from the perspective of the three-dimensional system of food security,economic development,and ecological protection.Taking Qianjiang City of Hubei Province as the study area,it constructs an evaluation index system of the comprehensive development level of food security,economic development and ecological protection,reveals the spatio-temporal changes of the comprehensive benefits of the three-dimensional system of food security,economic development and ecological protection in each township of Qianjiang City from 2016 to 2020 under the rice-crayfish co-cropping model,and explores its obstacle factors by the means of Kernel density estimation method,comprehensive evaluation model and obstacle degree model.The results showed that:1)Under the rice-crayfish co-cropping model,the three-dimensional system development index of Qianjiang City showed a dynamic evolution during the"13th Five-Year Plan"period,and there were some absolute differences in each township's development level.2)The comprehensive development benefits of the three-dimensional system show a decreasing trend with higher benefits in the west,east,and north of Qianjiang City than that in the center of Qianjiang City,economic development benefit and comprehensive benefits are more consistent with the spatial and temporal changes,while food security benefits and ecological protection benefits have opposite trends.3)Economic development indicators have the greatest impact on comprehensive development benefits,followed by ecological protection indicators and food security indicators.
关键词
虾稻共作/粮食安全/经济发展/生态保护/综合效益/可持续发展
Key words
rice-crayfish co-cropping model/food security/economic development/ecological protection/comprehensive benefits/sustainable development
万方数据