关键词: 水土资源, 可持续利用, 生态保护, 四川省

Abstract:

It is very important for the safeguard of national food security，ecological conservation and construction，the economic development of middle and lower reaches of the Yangtze River to protect soil and water resources and ecological environment in Sichuan.In this paper，a systematic analysis and estimate has been done on soil and water resources and the status of ecological protection in Sichuan，encountering to a series of problems，such as extensive and consuming soil erosion，serious desertification and degradation of grassland，increasingly acute contradictions land，potential crises of food，low utilization of water resources and the severe drought，five countermeasures about sustainable use of water and soil resources and ecological environment protection have been put forward，which were practically protecting farming resources，keeping up total quantity and quality of basic farmland with the present level；ascertaining defarming and reafforestation area，steadying and protecting existing cultivated area；intensifying the improvement of lowmedium yielding farmlands，saving the intensive using of limited land；economizing water use and enhancing hydraulic engineering construction，raising use factor and supply power of the water resources；enhancing comprehensive control of soil erosion.

Key words: water and land resources, sustainable utilization, ecological conservertion, Sichuan Province