大连市自改革开放，特别是９０年代以来，随着优惠政策的出台，外商纷纷涌入，城市开发建设项目急剧增加，城区不断扩大，小山沟、小丘陵也成了房地产开发的黄金地段。但由于开发建设单位或个人，不注意保护水土资源，致使每遇暴雨，泥沙横流，大风一来，沙土扑面，不仅破坏排? Since the reform and opening up in Dalian City, especially since the 90s, with the introduction of preferential policies, foreign investors have poured in one after another. As a result, urban development and construction projects have dramatically increased and urban areas have been constantly expanding. Small hills and small hills have become prime locations for real estate development. However, due to the development and construction units or individuals, do not pay attention to the protection of water and soil resources, resulting in each case of heavy rain, silt cross-flow, windy, sand blowing, not only destroy the row?