基于生态压力指数的江西省生态安全评价

在生态足迹原理的基础上,提出生态压力指数的概念,并将其作为生态安全评价的指标,同时制定了相应的指标等级划分标准.利用该方法对江西省1990-2004年的生态足迹与生态安全进行了定量研究.结果表明,江西省人均生态足迹从1990年的1.7340hm2增加到2004年的1.9304hm2,而同期的人均生态承载力则由0.8934hm2下降到0.7077hm2,人均生态赤字由0.8406hm2增长到1.2227hm2,生态压力指数从0.78增加到0.98,其等级由不安全变为很不安全.说明江西省现有的发展模式是不可持续的,生态环境处于很不安全状态.

Ecological Safety Assessment in Jiangxi Province Based on Ecological Tension Index

Based on the principle of ecological footprint, this paper put forward ecological tension index, ecological occupancy index applying to ecological safety assessment. Accordingl The ecological tension index and rank partition standard are used to measure y, the standard of rank is constituted. the ecology safety in Jiangxi Province. The results showed that the ecological footprint per capita in Jiangxi Province increased from 1. 7340hm^2 in 1990 to 1. 9304 hm^2 in 2004, whereas, the ecological capacity per capita decreased from 0. 893 4 hm^2 to 0. 707 7 hm^2, the ecological deficit per capita increased from 0. 8406hm^2 to 1. 2227 hm^2, the ecological tension index increased from 0.78 to 0.98, and the grade of ecological safety declined from unsafe to at risk. The results show that the development model of Jiangxi Province is not sustainable, the ecological environment is at risk.