An ecosystem service value assessment of land-use change on Chongming Island, China.
An ecosystem service value assessment of land-use change on Chongming Island, China.
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DOI：
10.1016/j.landusepol.2003.10.003
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发表时间：
2004-04
期刊：
影响因子：
7.1
通讯作者：
Bin Zhao;U. Kreuter;Bo Li;Zhijun Ma;Jia-kuan Chen;N. Nakagoshi
中科院分区：
文献类型：
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作者：
Bin Zhao;U. Kreuter;Bo Li;Zhijun Ma;Jia-kuan Chen;N. Nakagoshi
崇明岛是世界上最大的冲积岛。它的沿海湿地和滩涂提供了许多重要的生态服务，包括抵御潮汐的缓冲区和候鸟的中转区。由于其非凡的资源，风景优美的品质，以及它靠近45公里外的上海市，该岛也是一个有吸引力的旅游目的地，它支持重要的农业和渔业经济。然而，大规模的土地复垦项目正在实施，严重影响这些生态系统。通过对崇明海滩1990 - 2000年土地利用与生态系统服务功能变化的研究，分析了东滩土地利用与生态系统服务功能的变化。我们使用三个LANDSAT TM和/或ETM数据集来估计五个土地覆盖/土地利用类别的大小变化，我们还使用以前公布的价值系数来估计每个土地类别提供的生态系统服务价值的变化。最后，我们对各种生态系统功能对生态系统服务总价值的贡献进行了排序。结果表明：1990 ~ 2000年，东滩生态系统服务价值从3.1677亿美元下降到1.2040亿美元，下降幅度为62%（10年累计为855.26 -981.85亿美元）。这一大幅下降主要是由于湿地/潮滩损失了71%。我们的敏感性分析表明，这些估计相对稳健。我们还发现，水调节，供水，废物处理和原材料的贡献增加，而营养循环，食品生产，干扰调节，娱乐，栖息地/避难所，生物控制的贡献在10年的时间内下降。我们的结论是，未来的土地利用政策的制定应优先考虑这些生态系统的保护，不受控制的填海造地，进一步的土地复垦应根据严格的环境影响分析。
Chongming Island is the world's largest alluvial island. Its coastal wetland and tidal flats provide many important ecological services including buffers against tidal surges and staging areas for migratory birds. Due to its extraordinary resources, scenic qualities, and its proximity to the city of Shanghai 45km away, the island is also an attractive tourist destination, and it supports important agricultural and fisheries economies. Yet, large-scale land reclamation projects that are severely affecting these ecosystems have been implemented. In this paper, we report an investigation of changes in land use and ecosystem services on Dongtan (East Beach of Chongming Island) between 1990 and 2000. We used three LANDSAT TM and/or ETM data sets to estimate changes in the size of five land-cover/land-use categories, and we also used previously published value coefficients to estimate 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 determined that the total value of ecosystem services in Dongtan declined by 62% from $ 316.77 to 120.40 million per year between 1990 and 2000 (totaling $855.26–981.85 million over 10-years). This massive decrease is largely attributable to the 71% loss of wetlands/tidal flats. Our sensitivity analysis suggested that these estimates were relatively robust. We also found that the contribution of water regulation, water supply, waste treatment, and raw materials increased, while the contribution of nutrient cycling, food production, disturbance regulation, recreation, habitat/refugia, and biological control decreased during the 10-year time period. We 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.