Evaluation of Land Ecological Security in Liaocheng City

Land ecological security evaluation is of essential significance in realizing security and sustainability of regional land ecosystem.Liaocheng City of Shandong Province was taken as the study area and a system consisting of 20 indices from the natural,social and economic factors influencing land ecological security has been established based on comprehensively consideration of land use status.Based on the variances and coefficients of variance,the weight and the comprehensive scores were determined and calculated for land ecological security.Classification and evaluation of land ecological security of the eight counties(cities) of Liaocheng City were then carried out according to weighted sum method.The results show that,the security status of Dongchangfu District and Gaotang County were classified as "good grade",while the other six counties(cities) were labeled "alarming grade".Problems of land ecological security in the study area were analyzed,which could provide some reference value for the sustainable utilization of land resources.