Identification of the core ecosystem services and their spatial heterogeneity in Poyang Lake area |
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| Authors: | Nana Shi Jinyan Zhan Feng Wu and Jifu Du |
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| Institution: | (1) School of Environment, Beijing Normal University, Beijing, 100875, China;(2) Institute of Remote Sensing Application, Chinese Academy of Sciences, Beijing, 100101, China;(3) College of the Humanities and Social Sciences, Graduate University of the Chinese Academy of Sciences, Beijing, 100049, China |
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| Abstract: | According to the ecosystem assessment framework developed by the Millennium Ecosystem Assessment (MA), this paper designs
an evaluation system of ecosystem services in Poyang Lake area. On the basis of relevant variables disaggregated to 1 km grid
using the gridded 1 km, this paper employs factor analysis to extract a number of factors which characterize the ecosystem
services of Poyang Lake area. The extracted principal component are then represented onto 1 km×1 km grids by spatial clustering
analysis to recognize and identify the minimal but consistent mapping units for ecosystem services which can be used to delimit
the boundaries of ecological service zones. The research identifies ten ecosystem service zones in Poyang Lake area according
to the consistent principle of core ecosystem service unit. Four kinds of core ecosystem services including supporting function,
provisioning function, regulating function and cultural function are identified and represented. The research results could
provide both spatially and temporally valuable decision-making information for sustainable ecosystem management in the targeted
area. |
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| Keywords: | Poyang Lake area ecosystem services factor analysis spatial clustering analysis |
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