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三里河中上游植被覆盖率低,自然条件恶劣,流域内土地长期受水力的侵蚀冲刷,水土流失严重,导致土层变薄,有机质含量减少,土壤蓄水保肥能力降低,严重危害农业生产。由于防洪能力较低,沿岸荆棘丛生,河道两旁植被很少,有的地方垃圾成堆,生态环境不断恶化,急需治理。本文提出三里河生态治理与河道治理方案,包括水源涵养林、水土保持林、经济林建设以及河道开挖疏浚、护砌等措施。以改善流域生态环境,大大提高三里河的抗洪防灾能力,改善农业基础条件,推动当地农业经济发展。
Due to the low vegetation coverage in the middle and upper reaches of Sanli River and poor natural conditions, the land in the basin is eroded and washed away by water for a long time. Soil and water loss are serious, resulting in thinning of soil layers, reduction of organic matter content, reduction of soil water storage and fertilizer retention, and serious damage to agricultural production. Due to the low flood control ability, the coastal shrubs are densely covered and the vegetation on both sides of the river channel is very few. In some places, the rubbish is piled up and the ecological environment is deteriorating. Therefore, it is in urgent need of treatment. This paper presents Sanlihe ecological management and river management programs, including water conservation forest, soil and water conservation forest, economic forest construction and river excavation dredging, retaining and other measures. In order to improve the ecological environment of the river basin, greatly improve the ability of flood control and disaster prevention of Sanlihe River, improve the basic conditions of agriculture and promote the development of local agricultural economy.