基于生态足迹模型评价长江经济带耕地承载力

Evaluation of Cultivated Land Carrying Capacity of Yangtze River Economic Belt Based on Ecological Footprint Model

为研究长江经济带耕地承载力,给长江流域可持续发展和中部崛起提供参考,该文基于三维生态足迹模型,研究长江经济带生态足迹、生态承载力和生态盈余/赤字。研究结果表明:(1)从2015年到2019年,长江经济带人均生态足迹呈逐年下降的趋势,5年下降率为7.91%;(2)长江经济带人均生态承载力也呈逐年下降的趋势,5年下降率为2.37%;(3)长江经济带耕地利用呈生态盈余状况,且生态盈余在逐年上升,5年的增长率为10.39%;(4)长江经济带的11个省市耕地的利用现状内部分异大,根据11个省市核算结果分析人均生态足迹呈3个级别、人均生态承载力呈4个级别、生态盈余呈2个级别。综上所述,长江经济带涵盖的11个省市内部分异大,长江经济带整体耕地生态较好,耕地压力较小,土地所能提供的自然资源能够满足当前的生活水平和社会经济活动的要求。该文通过三维生态足迹模型研究2015-2019年长江经济带耕地承载力动态,为其可持续发展提供了科学依据。

Study the carrying capacity of arable land in the Yangtze River Economic Zone to provide references for the sustainable development of the Yangtze River Basin and the rise of Central China.Based on the three-dimensional ecological footprint model,study the ecological footprint,ecological carrying capacity and ecological surplus/deficit of the Yangtze River Economic Zone.The research results show that:(1)From 2015 to 2019,the per capita ecological footprint of the Yangtze River Economic Zone has shown a downward trend,with a 5-year decline rate of 7.91%;(2)The per capita ecological carrying capacity of the Yangtze River Economic Zone has also shown a downward trend year by year.The 5-year decline rate was 2.37%;(3)The use of cultivated land in the Yangtze River Economic Zone showed an ecological surplus,and the ecological surplus was increasing year by year,with a 5-year growth rate of 10.39%;(4)The use of cultivated land in 11 provinces and cities in the Yangtze River Economic Zone According to the calculation results of 11 provinces and cities,the per capita ecological footprint is at three levels,the per capita ecological carrying capacity is at four levels,and the ecological surplus is at two levels.To sum up,the Yangtze River Economic Belt covers 11 provinces and cities.The overall cultivated land ecology of the Yangtze River Economic Belt is relatively good,the pressure on cultivated land is small,and the natural resources that the land can provide can meet the current living standards and social and economic activities.Require.Research on the dynamics of cultivated land carrying capacity in the Yangtze River Economic Zone from 2015 to 2019 through a three-dimensional ecological footprint model provides a scientific basis for its sustainable development.