Abstract
Land ecological security is related to the sustainable development in every country. The ecological safety status of Poyang Lake Eco-economic Zone was chosen as study area in this paper. Based on Emergy, an evaluation index system of land ecological security is constructed from the perspective of the natural, economic and social factors. The AHP method was used to determine the index weights and multi-factor comprehensive evaluation method was also adopted to quantitatively evaluate and analyze the ecological security status of land use in the Poyang Lake Eco-economic Zone. The results show a downward trend from 2006 to 2010, the state of land ecological security changed from being comparatively safe to being critical safe. The value of ecological security for the Poyang Lake Eco-economic Zone decreased from 0.7031 in 2006 to 0.6576 in 2010.
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