GIS-based land-use eco-security evaluation in typical agro-pastoral zone
基于GIS的典型农牧交错区土地利用生态安全评价

Taking Ongniud Banner in Inner Mongolia as a representative of typical agro-pastoral zone in North China,GIS-based land-use eco-security evaluation was conducted.The results showed that in 1985-2000;over half of the study area was in danger of desertification and soil erosion.The soil erosion in the central and west regions and the land desertification in the eastern region were still serious,and the average eco-security synthetic index(ESSI) in this area was 2.70 in 1985 and 2.66 in 2000,with the overall eco-security status being in insecurity.The distribution area of various eco-security grades in 1985 and 2000 was in the order of less secure > extremely insecure > relatively secure > insecure > secure.