LUCC Ecological Security Analysis of Fuzhou Based on Landscape Pattern

Based on the land use data of Fuzhou five districts in 1988,2000 and 2008,supported by the function of GIS spatial analysis,and with the indexes of fragmentation,isolation and dominance,and of vulnerability of landscape types,it was introduced the indexes of ecological security to analyze that temporal characteristic of ecological security.The result shows: the change in landscape structure can strongly influence the indexes of ecological security in the region,which might result in the creasing of the degree of ecological security with the indexes of cultivated land and woodland landscape ecological security decreasing and construction land's contrary.The indexes of fragmentation and isolation of cultivated land,woodland,water area and unutilized land are increasing or unstable,and of the construction land decrease;the share of dominance landscape has changed and the control action of construction land to the landscape is being strong;the interference index of landscape and the index of ecological security are negative correlation.