摘要
四川地区的土壤侵蚀是造成土地退化的主要原因,全省水土流失面积20.0万km2,以水力侵蚀为主。土地退化的主要类型有土壤退化、土地石质化、土地沙质化和土地沙石化,全省沙质荒漠化面积达95.14万hm2。毁林垦殖、滥伐森林、工矿生产污染是造成土壤侵蚀、土地退化加剧的主要原因。
Soil erosion is the main reason leading to land degeneration in Sichuan Province. The total soil loss area in the province is 200 thousand kmz with water erosion as the main status .The main types of land degeneration include soil retirement, land petrifaction, land desertification, land petrifaction and desertification, the deserted land area reached 951.4thousand hm^2.Planting by deforestation, denuding forest, pollution from industrial production are main reasons aggravating soil erosion and land degeneration.
关键词
四川地区
土攘侵蚀
土地退化
环境污染
Sichuan province
worsening soil
land diminish
environmental pollution
