REGIONAL DIFFERENCES AND DECOUPLING EFFECTS OF NON-POINT SOURCE POLLUTION IN CHINA'S PLANTING INDUSTRY
To clarify the regional differences and decoupling effects of non-point source pollution in the planting industry can provide strong support for promoting greener agricultural development in all respects.Based on the equivalent standard pollution load method,this research calculated the equivalent standard load intensity of non-point source pollution in the planting industry in 31 provinces(cities or autonomous regions)of China from 1997 to 2020.Then taking eight comprehensive economic zones as the research units,it comprehensively examined the regional differences of non-point source pollution in the planting industry and its decoupling relationship with economic growth by using Kernel density estimation,Dagum Gini coefficient and Tapio decoupling model.The results showed that:(1)The equivalent standard load intensity of non-point source pollution in China's planting industry showed a trend of increasing first and then decreasing,and its spatial imbalance was prominent.(2)The overall difference was on the rise and the inter-regional difference was the main source of the overall difference,with its contribution rate to the overall difference presenting an"M"type evolution trend.(3)During the sample period,there was a relative decoupling relationship between the non-point source pollution of China's planting industry and economic growth,and it showed a development trend from the relative decoupling state to the absolute decoupling state.The northeast and northwest economic zones had achieved relative decoupling of the non-point source pollution of China's planting industry and economic growth,while the other economic zones were in relative decoupling relationships.Therefore,it is necessary not only to take pollution control measures by zoning and classification,but also to strengthen the regional coordinated treatment,so as to promote the absolute decoupling between non-point source pollution of planting industry and economic growth in various economic zones,and accelerate the realization of green transformation development of agriculture.
non-point source pollution in the planting industryregional differencedecoupling effectequiva-lent standard pollution load methodpollution control
NETL
NSTL
万方数据
