中国农业大学学报2018，Vol.23Issue(1)：152-163,12.DOI:10.11841/j.issn.1007-4333.2018.01.19
中国农业面源污染排放的空间差异及其动态演变
Spatial differences and dynamic evolution of agricultural non-point source pollution in China
摘要
Abstract
Based on the information of agricultural non-point source pollution evaluation during 2003-2014 in China,the dynamic evolution of agricultural non-point source pollution through time and space is analyzed by using Dagum Gini index and nonparametric estimation methods.The results indicate that:1) A slight decrease in the intensity of agricultural non-point source pollution is discovered,which also has significant regional differences.Higher average pollution is shown in eastern and central China,while it displays lower relatively in the northeast and western regions.2) There is slightly increasing in overall inequality of intensity of agricultural non-point source pollution in China from 2003 to 2014,which is mainly driven by the disparity among regions.3) Kernel density estimation indicates a trend of first decrease then increase and then decrease.4) Dynamic evolution of the intensity of agricultural non-point source pollution measured by Markov chain method reflects the low probability of the shift between different types of the intensity of agricultural non-point source pollution.From long-term perspective,huge gaps are developing among different regions.关键词
农业面源污染/地区差距/Dagum基尼系数/Kernel核密度/马尔科夫链Key words
agricultural non-point source pollution/regional disparity/Dagum Gini coefficient/kernel density estimation/Markov chain分类
管理科学引用本文复制引用
丘雯文,钟涨宝,原春辉,李兆亮..中国农业面源污染排放的空间差异及其动态演变[J].中国农业大学学报,2018,23(1):152-163,12.基金项目
中央高校基本科研业务费专项资金资助项目(2662017PY023) （2662017PY023）
