摘要
以可持续发展观为指导,利用生态足迹评价模型,计算宜宾市1985—2005年生态足迹,分析宜宾市的生态安全状况。结果表明,1985—2005年宜宾市人均生态足迹动态变化幅度较大,总体呈逐年上升趋势;人均生态承载力呈下降趋势,生态承载力结构具有不对称性,以耕地为主;人均生态赤字变化幅度较大,1985年后出现不同程度的生态赤字,2005年出现严重的生态赤字;1985—2005年生态足迹压力指数呈现增长趋势,增幅显著。宜宾市生态安全程度持续降低,经历了安全状态—稍不安全—较不安全—极不安全的发展阶段,人类的生活、生产对宜宾市生态安全的压力越来越大,宜宾市未来土地资源的供需矛盾越来越突出。
This paper, aiming at the sustainable development, uses the eco-footprint model to calculate the eco-footprint during 1985--2005 in Yibin city, and analyzes the eco-footprint safety, with results indicating a big dynamic change in per capital eco-footprint, increasing trend in general, decreasing trend in per capital coo-loads with asymmetric structure （chiefly, plowlands）. The per capital eeo-deficit fluctuated largely, emerging since 1985, to some extent, becoming severe in 2005. The eco-footprint pressure index displays an increasing trend from 1985 to 2005. The ecological safety becomes continuously decreasing, undergoing safe, less safe, unsafe, and very unsafe stages. Human＇ s living and production has a bigger and bigger impact over eco-footprint safety. The land demands and supply will become sharp in the future in Yibin city.
出处
《资源与产业》
北大核心
2009年第1期114-118,共5页
Resources & Industries
关键词
生态足迹
生态赤字
生态压力指数
生态安全
宜宾市
eco-footprint
ecological deficit
ecological pressure index
ecological safety
Yibin city
