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Impact of land use and land cover changes on ecosystem services in Menglun, Xishuangbanna, Southwest China

机译:西双版纳蒙伦市土地利用和覆被变化对生态系统服务的影响

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Changing the landscape has serious environmental impacts affecting the ecosystem services, particularly in the tropics. In this paper, we report changes in ecosystem services in relation to land use and land cover over an 18-year period (1988-2006) in the Menglun Township, Xishuangbanna, Southwest China. We used Landsat TM/ETM and Quickbird data sets to estimate changes in ten land use and land cover categories, and generalized value coefficients to estimate changes in the ecosystem services provided by each land category. The results showed that over the 18-year period, the land use and land cover in the study area experienced significant changes. Rubber plantations increased from 12.10% of total land cover to 45.63%, while forested area and swidden field decreased from 48.73 and 13.14 to 27.57 and 0.46%, respectively. During this period, the estimated value of ecosystem services dropped by US $11.427 million (~27.73%). Further analysis showed that there were significant changes in ecological functions such as nutrient cycling, erosion control, climate regulation and water treatment as well as recreation; the obvious increase in the ecological function is provision of raw material (natural rubber). Our findings conclude that an abrupt shift in land use from ecologically important tropical forests and traditionally managed swidden fields to large-scale rubber plantations result in a great loss of ecosystem services in this area. Further, the study suggests that provision of alternative economic opportunities would help in maintaining ecosystem services and for an appropriate compensation mechanisms need to be established based on rigorous valuation.
机译:改变景观会严重影响环境,尤其是在热带地区,影响生态系统服务。在本文中,我们报告了中国西南部西双版纳市的蒙伦乡在过去18年(1988-2006年)内与土地利用和土地覆盖相关的生态系统服务变化。我们使用Landsat TM / ETM和Quickbird数据集来估计十种土地利用和土地覆盖类别的变化,并使用广义值系数来估计每个土地类别提供的生态系统服务的变化。结果表明,在过去的18年中,研究区的土地利用和土地覆盖发生了显着变化。橡胶园从占土地总面积的12.10%增加到45.63%,而森林面积和水田分别从48.73和13.14减少到27.57和0.46%。在此期间,生态系统服务的估计价值下降了1142.7万美元(〜27.73%)。进一步分析表明,养分循环,侵蚀控制,气候调节和水处理以及娱乐等生态功能发生了重大变化;生态功能的明显增加是提供原材料(天然橡胶)。我们的发现得出结论,土地用途从具有生态重要性的热带森林和传统管理的耕地突然转变为大规模的橡胶种植园,导致该地区生态系统服务的大量损失。此外,研究表明,提供替代性经济机会将有助于维持生态系统服务,因此需要在严格的估价基础上建立适当的补偿机制。

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