基于生态足迹的石家庄市土地生态承载力评价

基于生态足迹的原理和模型,对石家庄市1996、2000、2006、2011年的生态承载力进行了分析,结果表明:石家庄市的人均生态足迹处于一个逐年增加的阶段之中,人均生态足迹从1996年的2.4893hm2增加至2011年的5.4973hm2;而人均生态承载力则由1996年0.3616hm2减少至2011年0.3349hm2,生态足迹和生态承载力呈反方向发展的趋势。1996-2011年间,石家庄市的人均生态足迹大大超过人均生态承载力,出现生态赤字并且逐渐增大,人均生态赤字由2.2510hm2增加至5.1624hm2,表明石家庄市人口对自然资源的需求已经远远超过了石家庄市自然生态系统的承受范围,影响该区的可持续发展。

Evaluation of ecological carrying capacity based on ecological footprint model in shijiazhuang

Adopting the ecological footprint principle and model,taking Shijiazhuang as a case,this paper calculated and analyzed its ecological footprints during in 1996,2000,2006 and 2011,according to the data from the statistical yearbook.The results showed that the ecological footprint per capita gradually increased from 2.4893hm^2 to 5.4973 hm^2 during 1996-2011 in Shijiazhuang.The speed of the ecological footprints＇ addition was getting obviously quicker in recent years,whereas,the average personal ecological capacity declined year by year from 0.3616 hm^2 to 0.3349 hm^2.A conclusion could be drawn that the ecological footprints and ecological capacity development were just in the opposite direction.Secondly,Shijiazhuang was in ecological deficit condition from 1996-2011 and the ecological deficit increased from 2.2510 hm^2 per capita to 5.1624 hm^2 per capita,The research indicates that the utilization of natural resources in Shijiazhuang is increasing year by year,which is beyond the capacity of the natural ecological system,the conflicts between ecological footprints and ecological capacity are going up,the present developing model is not sustainable,and the ecological environment is at risk.