生态与农村环境学报2009，Vol.25Issue(3)：21-24,29,5.
基于重金属污染的耕地生态承载力改进模型研究
Modified Model of Ecological Carrying Capacity of Cropland Based on Heavy Metal Pollution
摘要
Abstract
Modification is made of the traditional model of ecological carrying capacity of cropland through introducing the factor of cropland heavy metal pollution into the study of the ecological footprint theory,with Jiangsu Province set as an example in case study.Results show that by using the modified model the ecological carrying capacity of cropland in Jiangsu in 2005 was calculated to be 0.127 hm2 per capita,5.2% lower than 0.134 hm2 per capita calculated by using the traditional model;the cropland ecological deficit 0.067 hm2 per capita,11.7% higher than 0.060 hm2 per capita calculated by using traditional model;and the cropland ecological sustainability index 0.39,lower than 0.41 calculated by using traditional model.Although the results of the calculation using both models put the cropland of Jiangsu under the category of "weak unsustainability",the modified model more truly reflected the practical situation of the land use,and the negative impact of heavy metal pollution on ecological carrying capacity of the cropland in Jiangsu Province as well.关键词
耕地生态承载力/耕地利用/生态可持续指数/重金属污染Key words
ecological carrying capacity of cropland/cropland use/ecological sustainability index/heavy metal pollution分类
资源环境引用本文复制引用
朱利群,陈长青,卞新民..基于重金属污染的耕地生态承载力改进模型研究[J].生态与农村环境学报,2009,25(3):21-24,29,5.基金项目
国家科技支撑计划重点项目(2007BAC16B04) （2007BAC16B04）
