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湖北省耕地生态足迹动态分析 被引量:9

DYNAMIC ANALYSIS ON PLOWLAND ECOLOGICAL FOOTPRINT IN HUBEI PROVINCE
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摘要 本文采用可变地区单产法,对湖北省1990—2004年耕地的生态足迹进行了动态分析。结果表明,在研究时段内人均耕地生态足迹由1990年的0.3442 hm2降至2004年的0.2736 hm2,下降了20.51%。人均耕地生态承载力在总体上也呈下降趋势,从1990年的0.1485 hm2下降到2004年的0.1165 hm2,下降了21.56%。耕地的生态赤字呈小幅度波动,由1990年的0.1956 hm2变为2004年的0.1571 hm2。在分析时段内,耕地生态强度指数也有一定变化,其中1992年的最大,为2.41,1993年的最小,为1.98。但在研究时段内的耕地生态强度指数均大于1,这说明湖北省的耕地处于生态高负荷状态。 This paper dynamically analyzes the plowland ecological footprint in Hubei province from 1990 to 2004 by using the method of Single Yield in Variable Areas (SYVA). The results indicate that the personal plowland ecologic footprint (PPEF) declined from 0. 344 2 hm^2 in 1990 to 0. 273 6 hm^2 in 2004, a 20. 51% dropping, the personal plowland ecologic supporting capacity (PPESC) decreased generally, from 0. 148 5 hm^2 in 1990 to 0. 116 5 hm^2 in 2004, the plowland ecologic deficit (PED) kept little change, from 0. 195 6 hm^2 in 1990 to 0. 157 1 hm^2 in 2004. During the study period, the plowland ecologic intensity ( PEI), reaching its crest 2.41 in 1992 and falling its trough 1.98 in 1993, always exceeded 1, implying an ecologic overload in plowland in Hubei Province.
出处 《资源与产业》 2007年第3期72-76,共5页 Resources & Industries
关键词 耕地生态足迹 生态承栽力 生态足迹强度指数 生态赤字 湖北省 ecologic footprint ecologic supporting capacity ecologic footprint intensity ecologic deficit hubei province
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