The Evaluation on Land Ecological Environment Security——A Case Study of Ningxia Hui Municipality

Based on research fruit of regional ecological security,choosing Ningxia Hui municipality as research region,combining extending PSR frame and regional environment and land use structure the index system of evaluation on land ecological environment security of Ningxia Hui municipality was established.Land ecological security indexes were calculated by AHP and colligate grade,and to study dynamic diversification of land ecological security in different period of time.The results indicated: the land environment ecological security was improved since 1991,but was still in a alarm state(sensitivity state).