Evaluation on Land Ecological Security in Daqing City

With the depth of production and construction and the development of economy in urban,land conflicts becoming increasingly prominent and land safety facing threats.The land ecological security appraisal target system of Daqing was established based on P-S-R model.The weight of the indicator was determined by the method of mean square error.The ecological safety levels were identified from 2000 to 2009.The reasons of land of the ecological security change were analyzed and the measures and suggestions were put forward to promote the construction of ecological security in Daqing.