城镇化进程的不断推进使我国经济迅速发展,人民的生活水平持续提高,与此同时,城市的无序扩张带来了很多问题,比如交通功能的滞后,城市管理的混乱,城市卫生及文明程度的下降等等,但引起人们注意的最关键的一个问题还是生态环境质量的下降。绿地的减少、水域面积的减少、生物多样性的逐渐消失等等迹象使人们意识到人类的可持续发展受到了威胁,于是在城市规划基础之上,人们开始尝试对非建设用地进行规划,由非建设用地范围控制建设用地,避免城 The continuous advancement of urbanization has led to the rapid economic development in our country and the continuous improvement of people’s living standard. At the same time, the disorderly expansion of cities has brought about many problems, such as the lag of transport functions, the confusion of urban management, urban hygiene and civilization Decline, etc. However, one of the most crucial issues that cause people’s attention is the decline of the quality of ecological environment. The decrease of green space, the reduction of water area and the gradual disappearance of biodiversity make people realize that the sustainable development of human beings is under threat. Therefore, on the basis of urban planning, people begin to try to plan non-construction land from Non-construction land control construction sites, to avoid the city