The rebuilding and resuming of SD model of the eco-environment in the agriculture and animal husbandry interlock zone along the Great Wal
长城沿线农牧交错带生态环境恢复重建SD模型研究

The rebuilding of SD model and resuming of the ec o-environment in the agriculture and animal husbandry interlock zone along the Great Wall were establ ished by a system dynamic theory,and a simulating study for three typical manage ment patterns,a intensified management,steady development and traditional manage ment,in the region was made by the SD model.The results show that the intensifie d management pattern is the best approach to harness the eco-e nvironment in the region,it can balance the development of agriculture,forestry and animal husband ry,reduce the soil erosion by 76.1%,return a good circle of eco-environment in the region.