Dynamic changes of ecosystem service value of  water conversation based on time series Landsat images

Xiaohe Gu; Wei Guo; Huiling Long; Xiaoyu Song

doi:10.1117/12.2068541

21 November 2014 Dynamic changes of ecosystem service value of water conversation based on time series Landsat images

Xiaohe Gu, Wei Guo, Huiling Long, Xiaoyu Song

Proceedings Volume 9260, Land Surface Remote Sensing II; 92602P (2014) https://doi.org/10.1117/12.2068541
Event: SPIE Asia-Pacific Remote Sensing, 2014, Beijing, China

Abstract

Water conservation is one of the important ecological service functions of ecosystem. Time series LandSat images were used to analyze the change of spatial pattern of ecosystem in recent thirty years. Four types of ecosystems including farmland, forest, grassland and water were mapped, which had the function of water conservation. The water conservation function of ecosystem is similar to storing water of reservoir. The expense substitution method was used to calculate the service value of water conservation of ecosystem. The average cost of constructing the reservoir was substituted to evaluate the service value of water conservation function of ecosystem. Results showed that the ecological value of water conservation in Beijing area in 1978 was highest among four years, while that in 2000 was lowest. The fluctuation of water storage of ecosystem was consistent with the precipitation. The main contributors of ecological value of water conservation were forest and farmland. Because the government was committed to promoting the percentage of forest covering, the forest was the stable contributor for water conservation in Beijing area.

Citation Download Citation

Xiaohe Gu, Wei Guo, Huiling Long, and Xiaoyu Song "Dynamic changes of ecosystem service value of water conversation based on time series Landsat images", Proc. SPIE 9260, Land Surface Remote Sensing II, 92602P (21 November 2014); https://doi.org/10.1117/12.2068541

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KEYWORDS

Ecosystems

Earth observing sensors

Landsat

Remote sensing

Classification systems

Vegetation

Image classification

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