| 基于重金属污染的耕地生态承载力改进模型研究 |
| |
| 引用本文： | 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). |
| |
| 作者姓名： | 朱利群 陈长青 卞新民 |
| |
| 作者单位： | 南京农业大学农学院,江苏,南京,210095 |
| |
| 基金项目： | 国家科技支撑计划重点项目 |
| |
| 摘 要： | 将耕地重金属污染引入耕地生态足迹研究中,对传统耕地生态承载力模型进行了改进,并以江苏省为例进行实证研究.结果表明,运用改进的生态承载力模型计算所得2005年江苏省人均耕地生态承载力为0.127 hm2,比传统模型计算结果0.134 hm2小;人均耕地生态赤字为0.067 hm2,比传统模型计算结果0.060 hm2大;耕地生态可持续指数为0.39,比传统模型计算结果0.41小,但2种模型计算方式下耕地利用均属于弱不可持续状态.与传统模型计算结果相比,改进模型所得结果能够反映江苏省耕地利用的实际情况,以及重金属污染对江苏耕地可持续利用所产生的负面影响.
|
| 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 |
Modified Model of Ecological Carrying Capacity of Cropland Based on Heavy Metal Pollution |
| |
| ZHU Li-qun,CHEN Chang-qing,BIAN Xin-min.Modified Model of Ecological Carrying Capacity of Cropland Based on Heavy Metal Pollution[J].Journal of Ecology and Rural Environment,2009,25(3). |
| |
| Authors: | ZHU Li-qun CHEN Chang-qing BIAN Xin-min |
| |
| Institution: | College of Agronomy;Nanjing Agricultural University;Nanjing 210095;China |
| |
| 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 ecologica... |
| |
| Keywords: | ecological carrying capacity of cropland cropland use ecological sustainability index heavy metal pollution |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
