The change in values for ecological footprint indices following land-use change in a Loess Plateau watershed in China
The change in values for ecological footprint indices following land-use change in a Loess Plateau watershed in China
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DOI：
10.1007/s12665-009-0050-4
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发表时间：
2009-02
影响因子：
2.8
通讯作者：
P. Zhou;Guobin Liu
中科院分区：
文献类型：
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作者：
P. Zhou;Guobin Liu
可持续性被定义为在一个区域的生态承载能力范围内对人类生活质量的持续支持。生态足迹是分析自然资源可持续利用程度的量化指标，已被广泛用于评价某一区域的发展是否在自然生态系统的承载能力范围之内。通过对纸坊沟流域的生产数据、消费数据和统计公报的分析，确定了流域人均生态足迹、生态承载力及相关指标。在理论分析的基础上，建立了退耕还林政策实施前后人口-生态足迹模型所需的生物生产用地面积模型。结果表明，实施退耕还林政策后，人均生态足迹由0.733 hm2/−降至0.650 hm2/−，生物容量由1.559 hm2/−提高至1.567 hm2/hm2/hm2。退耕还林前后生态系统资源均出现过剩，并因退耕还林政策的实施而有所增加。相关生态足迹指数分析表明，该流域万元GDP生态足迹减少，但生态效率、生态足迹指数、生态足迹生物多样性和系统发展能力增加，表明该流域生态条件得到改善，发展潜力增强。同时，政策出台后，林地的敏感指数比其他生物产区得到了更大的加强。在调整和优化土地利用结构中创造了资源节约型模式，逐步形成了资源节约型增长模式，并引发了持续消费，将改善纸坊沟流域未来的生态环境。
Sustainability was defined as the continuous support of human quality of life within a region’s ecological carrying capacity. Ecological footprint was a quantitatively measuring indicator to analyze the sustainable use of natural resources and had been widely used to evaluate whether the development of a certain region was within the range of the capacity of natural ecosystem. In the present study, production data, consumption data and statistics communique of Zhifanggou watershed were analyzed to determine per capita ecological footprint, biological carrying capacity and related indices. On the basis of theory a model was applied that showed the biologically productive land area required by a defined population—ecological footprint model before and after grain for green policy. Result showed that after introducing the grain for green policy, per capita ecological footprint was reduced from 0.733 to 0.650 hm2cap−1and biological capacity was increased from 1.559 to 1.567 hm2cap−1. There was a surplus of ecosystem resources both before and after the grain for green policy and this increased as a result of the policy. The related ecological footprint indices analysis showed that 10,000 RMB of GDP of ecological footprint was reduced, but ecological efficiency, ecological footprint index, bio-diversity of ecological footprint and system development ability increased Results demonstrated that conditions in this watershed improved and development potential was enhanced. Meanwhile, the sensitive index of forestland was strengthened more than other biological productive areas after introducing the policy. In adjusting and improving the land use structure created a resource-saving mode, forming resource-saving increase mode gradually, and triggering sustained consumption which will improve the ecological environment of zhifanggou watershed in the future.