基于InVEST模型的典型石漠化地区生态系统服务评估——以晴隆县为例
Ecosystem services evaluation of typical rocky desertification areas based on InVEST model —A case study at Qinglong Country, Guizhou Provice
查看参考文献23篇
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文摘
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生态系统服务功能对人类的生活有着重要意义,但是目前关于喀斯特地区的生态系统服务功能研究较少。本文采用InVSET模型中的水源涵养模块、土壤保持模块和碳存储模块对典型喀斯特地区晴隆县,进行了生态系统服务综合评估。同时为了进一步了解喀斯特地区的生态系统服务功能特异性,在GIS技术支持下,分析了石漠化等级与生态系统服务功能得分的关系。结果表明:2003—2013年,研究区三大生态系统服务功能的变化主要体现在数量上而非空间分布;其同时受三种生态系统服务功能控制的地区面积很小,仅占研究区总面积的0.01%,而受单一生态系统服务功能控制的地区相对较多;潜在石漠化和轻度石漠化地区的生态系统服务功能最好,是石漠化治理的重点保护区,而无石漠化地区和强度石漠化地区的生态系统服务功能最差,是石漠化的重点治理区。研究表明InVEST模型可以很好地对喀斯特地区的生态系统服务功能进行评估,为喀斯特地区的生态保护和治理提供科学的依据。 |
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其他语种文摘
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Ecosystem services are significantly important for human being. However, little attention has been paid to the ecosystem services in rocky desertification areas. In this study, InVSET (Integrated Valuation of Environmental Services and Tradeoffs) model was used to evaluate ecosystem services, in terms of water yield module, sediment retention module and carbon storage module, in a typical rocky desertification area, Qinglong County. The relationship between rocky desertification classification and ecosystem services scoring were also analyzed for further understanding of the specificity related to rocky desertification ecosystem services, with the support of GIS. The results show that: between 2003 and 2013, the quantity change, rather than the spatial distribution change, was the major transformation among the three ecosystem services. The water yield service tended to decline because of precipitation decrease and evapotranspiration increase. The soil conservation service trended to increase due to the decreased rainfall erosivity. And the carbon conservation didn't change obviously. In addition, regions covered by all the three ecosystem services only account for 0.01% of the total area, while those affected by single ecosystem service took the majority. The land for human living activities mainly located in areas where rare ecosystem service covers, and environmental ecosystem services of these areas were the worst as a result of destruction of environment ecosystem. Moreover, regions of potential and mild rocky desertification possessed the best ecosystem services owing to the low-level rocky desertification and the rare interference of human activities in these areas. On the contrary, ecosystem services in the regions with intense rocky desertification was the worst as a result of human over-exploited in non-rocky desertification areas. Our study indicates that the InVEST model can assess ecosystem services in rocky desertification areas effectively. The measures of restoring the ecological damages in non-rocky desertification areas, protecting ecosystem in potential as well as mild rocky desertification areas, and governing middle or intense rocky desertification areas are significantly beneficial in improving the environment ecosystem of rocky desertification areas. |
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来源
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地球环境学报
,2014,5(5):328-338 【扩展库】
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DOI
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10.7515/JEE201405004
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关键词
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生态系统服务功能
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InVEST模型
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石漠化地区
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地址
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中国科学院地球化学研究所, 环境地球化学国家重点实验室, 贵阳, 550002
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中国科学院地球化学研究所, 环境地球化学国家重点实验室;;中国科学院普定喀斯特生态系统观测研究站, 贵阳, 550002
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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1674-9901 |
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学科
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环境质量评价与环境监测 |
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基金
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中国科学院西部之光人才培养计划
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贵州省农业科技攻关项目
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贵州省贵阳市科技局项目
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贵州省项目
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国家973计划
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国家科技支撑计划项目
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文献收藏号
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CSCD:5508901
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