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人为不合理的经济活动,是造成沂蒙山区水土流失的主要根源。水土流失对沂蒙山区生态环境的破坏和经济建设的危害,主要有:土地退化,生物产量下降;淤积河道塘库,影响工程效益;生态环境恶化,自然灾害频繁。遵照生态经济原则搞好沂蒙山区的水土保持工作,一是坚持系统的整体性原则,以小流域为单元综合治理沂蒙山区的水土流失;二是坚持系统的结构性原则,合理调整农业布局;三是坚持系统的相关性原则,在抓好治理的同时做好预防和保护工作。
Man-made unreasonable economic activity is the main source of soil and water loss in Yimeng Mountainous Region. Soil and water loss damage Yichang mountainous area ecological environment and economic construction are: land degradation, biological production decline; siltation river ponds, affecting the project benefits; deterioration of the ecological environment, frequent natural disasters. In accordance with the principles of ecological and economic work to do a good job Yimeng Mountain water and soil conservation work, first, adhere to the principle of systematic integrity, small watershed as a unit of comprehensive management of soil erosion Yimeng Mountain; Second, adhere to the structural principles of the system, a reasonable adjustment of agricultural layout; three Is to adhere to the principle of the system of relevance, do a good job in prevention and protection work.