秦岭北麓生态承载力定量评价研究

基于生态承载力理论,计算和分析了秦岭北麓的生态承载力状况,结果表明:秦岭北麓的生态弹性指数大于50,生态系统具有中等的自我维持与自我调节能力;水资源与土地资源均具有较高的承载能力,但土地资源的承载能力更具优势,承载指数大于70,水资源的承载指数则小于70;从资源的承载压力度来看,土地资源的承载压力比较小,水资源的承载压力则非常大,已超负荷。11个区县中,最低的水承载压力度为2.84,最高的已达到33.89的强压水平,水资源已成为社会经济发展的“瓶颈”。

Quantitative Estimative Study of Ecological Carrying Capacity on the North Slope of Qinling Mountains

Based on the ecological carrying capacity theory,the situation of the ecological carrying capacity on the north slope of QinlingMountains is calculated and analyzed.The result shows:the ecological elastic index on the north slope of Qinling Mountains is above 50,the ecosystem itself has medium keeping and regulating ability;both water resource and land resource have higher carrying-capacity,but the land resource carrying capacity has more advantage,its carrying index is above 70 while the water resource carrying index is under 70.Seen from the resource carrying-pressing index,the land resource has a little pressure,but the water resource carrying-pressing index is very great,it has already overloaded.In 11 counties,the lowest water carrying-pressing index is 2.84,the highest one is already up to 33.89,the water resource has already become the restriction factor of social progress and economic development.