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Changes in Ecosystem Service Values on the Loess Plateau in Northern Shaanxi Province, China

ISSN号：1003-7578
期刊名称：《干旱区资源与环境》
时间：0
分类：X171.1[环境科学与工程—环境科学]
作者机构：[1]College of Tourism and Environment, Shaanxi Normal University, Xi＇an 710062, P.R.China
相关基金：The research work was supported by the National Natural Science Foundation of China （40771019）, and the National Natural Science Foundation of Shaanxi Province, China （2007D16）.

关键词：生态系统, 黄土高原, 陕西, 中国, landuse, ecosystem services, the value, ecosystem functions, the Loess Plateau, northern Shaanxi Province

中文摘要：

在中国的北 Shaanxi 省的黄土高原主要盖住 Yulin， Yan'an，和 Tongchuan 城市。相法的类型复杂、各种各样，包括沙和风的过渡区域，多山溪谷的易碎的区域，从诺思的丘疹墩区域到向南。严重地正在影响这些生态系统的大规模陆地开垦工程被实现了。在这篇论文，我们从 1978 ～ 2000 在北 Shaanxi 省在黄土高原上在土地利用和生态系统服务向变化汇报了调查。我们使用了三个 LANDSAT TM 或 ETM 数据集合在五个 land-cover/land-use 范畴的尺寸估计变化，并且我们也使用了以前出版的值系数在每地目交付的生态系统服务的值估计变化。最后，我们评价各种各样的生态系统功能的贡献到生态系统服务的全面价值。我们估计了生态系统服务的年度价值是在在在 2000 的北 Shaanxi 省的黄土高原的 56.95 银与铜 RMB 元。在这个区域，从 1978～2000 ，修理的碳的经济价值更高，水保存的经济价值最低，但是 NPP ，修理的碳，和供应的氧的经济价值说明了因为上面百分之90 个总数珍视，显然，植被创造了最大的生态系统服务价值。我们能断定未来陆地使用政策明确的表达应该在不受管束的开垦上把领先给这些生态系统的保存，并且那进一步的陆地开垦应该基于严密环境影响分析。

英文摘要：

The Loess Plateau in northern Shaanxi Province of China covers Yulin, Yan＇an, and Tongchuan cities mainly. The kind of physiognomy is complicated and various, including the transitional region of the sand and wind, the hilly-gully fragile region, the pimple mound region from North to South. Large-scale land reclamation projects that are severely affecting these ecosystems have been implemented. In this paper, we reported an investigation to the changes in land use and ecosystem services on the Loess Plateau in northern Shaanxi Province from 1978 to 2000. We used three LANDSAT TM and/or ETM data sets to estimate the changes in the size of five land-cover/land-use categories, and we also used previously published value coefficients to estimate the changes in the value of ecosystem services delivered by each land category. Finally, we ranked the contribution of various ecosystem functions to the overall value of the ecosystem services, we have estimated that the annual value of the ecosystem services is 56.95 billon RMB yuan in the Loess Plateau in northern Shaanxi Province in 2000. In the region, from 1978 to 2000, the economic value of the fixing carbon was higher, the economic value of water conservation was the lowest, but the economic value of the NPP, fixing carbon, and supplying oxygen accounted for above ninety percent of the total value, obviously the vegetation created the biggest ecosystem service value. We can conclude that future land-use policy formulation should give precedence to the conservation of these ecosystems over uncontrolled reclamation, and that further land reclamation should be based on rigorous environmental impact analyses.

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