1995～2007年新疆耕地生态足迹动态分析

[目的]通过分析新疆近10年的耕地生态足迹,评价该区域耕地是否处于可持续利用的状态.[方法]生态足迹模型.[结果]在研究时段内新疆人均耕地生态足迹经历5个变化阶段,总体上呈现增加趋势,人均耕地生态足迹由 1995年的0.420 8 hm2 上升至2007年的0.495 7 hm2,增加了17.80;.而人均耕地生态承载力经历了3个变化阶段,总体上则是呈现减少趋势,从1995年的0.215 5 hm2下降到2007年的0.198 7 hm2,下降了7.80;.耕地的生态赤字呈小幅变化,整体处于增强趋势,由1995年的0.205 2 hm2增长为2007年的0.297 1 hm2.在分析时段内,耕地生态超载指数呈小幅度变化,整体呈现上升趋势,由1995年的0.95增加到2007年的1.50.[结论]研究时段内,耕地生态超载指数均大于零,说明新疆的耕地承载力处于超负荷利用状态.

Dynamic Analysis of Cultivated Land Ecological Footprint in Xinjiang during 1995-2007

[Objective and Method]The aim of this text was mainly to evaluate whether the cultivated land in the research area were in the sustainable use situation.Based on the ecological footprint model,the dynamic change of ecological footprint of cultivated land in Xinjiang from 1995 to 2007 was analyzed.[Result]The results indicated that the cultivated land ecological footprint per capita in Xinjiang in 5 change stages,,increased from 0.420 8 hm2 in 1995 to 0.495 7 hm2 in 2007,it increased by 17.80%.In the period of time,the cultivated land ecology capacity per capita in Xinjiang in 3 change stages were declined from 0.215 5 hm2 in 1995 to 0.1987 hm2 in 2007,it was dropped by 7.80%.The cultivated land ecological deficits of wltivated land changed litlle and was increased in total.It was increased from 2 052 hm2 in 1995 to 0.297 1 hm2 in 2007.In the analysis period,overload index of cultivated land changed litlle,it was increased from 0.95 in 1995 to 1.50 in 2007.[Conclusion]In the time interval,the ecological bearing capacity of cultivated land was in the situation of overload use.