Remote sensing evaluation of ecosystem service value of gas regulation with time series LandSat images

文献类型： 外文期刊

第一作者： Gu, Xiaohe

作者： Gu, Xiaohe;Guo, Wei;Wang, Yancang;Yang, Guijun

作者机构：

关键词： gas regulation;ecosystem service value;NPP;change analysis;expense substitution

期刊名称：REMOTE SENSING FOR AGRICULTURE, ECOSYSTEMS, AND HYDROLOGY XVI

ISSN： 0277-786X

年卷期： 2014 年 9239 卷

页码：

收录情况： SCI

摘要： Gas regulation is one of the important ecological service functions of ecosystem. Plants transform solar energy into biotic energy through photosynthesis, fixing CO2 and releasing O-2, which plays an irreplaceable role in maintaining the CO2/O-2 balance and mitigating greenhouse gases emissions. The ecosystem service value of gas regulation can be evaluated from the amount of CO2 and releasing O-2. Taken the net primary productivity (NPP) of ecosystem as transition parameter, the value of gas regulation service in Beijing city in recent 30 years was evaluated and mapped with time series LandSat images, which was used to analyze the spatial patterns and driving forces. Results showed that he order of ecosystem service value of gas regulation in Beijing area was 1978 > 1992 > 2000 > 2010, which was consistent with the order of NPP. The contribution order for gas regulation service of six ecosystems from1978 to 2010 was basically stable. The forest and farmland played important roles of gas regulation, of which the proportion reached 80% and varied with the area from 1978 to 2010. It indicated that increasing the area of forest and farmland was helpful for enhance the ecosystem service value of gas regulation.

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