绵阳市土地利用变化对水土流失的影响研究

Study on Land Use Change and Soil and Water Conservation in Mianyang City

研究绵阳市土地利用变化状况与水土流失的关系,对于解决水土流失问题有着十分重要的意义。该研究发现,绵阳市近20年来土地利用变化情况如下:林地、居住及工矿用地、交通运输用地不断增加;草地、水域及水利设施用地不断减少;耕地则是先减少后增加;园地先增加后减少;其他的备用土地不断减少。由于各土地利用类型所造成的水土流失是不同的,而水土流失情况则有所好转,说明两者之间有明显的相关性。

The study of the relationship between land use change and soil erosion in Mianyang is of great significance for solving the problem of soil erosion. The change of land use in Mianyang in recent 20 years has been found to be as follows：woodland, residential and industrial and mining land, traffic and transportation land are increasing continuously ; grassland, water and water conservancy facilities are decreasing continuously ; the cultivated land is reduced first and then increases ; the garden land increases first and then decreases ; other spare land is continuously reduced.Because of the different soil and water losses caused by land use types, soil erosion is improved, indicating a clear correlation between them.