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中国西北干旱地区的面积约占全国的1/4,水资源是生命之源,它的合理开发利用,无疑是西部大开发问题的关键。但是,西北地区生态环境十分脆弱,不能因为开发而造成生态环境的进一步恶化。总的来说,西北的生态环境,在绿洲内部有所改善,但是绿洲外的生态环境,正在进一步恶化。例如塔里木河下游沙漠化的上地面积,由1959年的137.1公顷,增加为1998年的1487公顷,而且沙漠化强度正在提高。在沙漠化土地中,轻度沙漠化上地面积减少,中度、强度和极强度则均有增加。1982年调查,218国道从新疆尉犁到罗布庄段公路受沙害的路段共115处。1996年调查,受到沙害路段发展到197处。原因是塔里木河下游的长期断流,胡杨林等植被大量枯死,
The area of arid areas in northwestern China accounts for about one fourth of the national total. Water resources are the source of life, and its rational development and utilization are undoubtedly the key issues in the western development. However, the ecological environment in the northwest is very fragile and can not be further aggravated by the development. In general, the ecological environment in the northwest has been improved within the oasis, but the ecological environment outside the oasis is deteriorating further. For example, the area of desertification in the lower reaches of the Tarim River increased from 137.1 hectares in 1959 to 1,487 hectares in 1998, and the intensity of desertification is increasing. In the desertified land, the area of mild desertification is reduced while the average intensity, intensity and intensity are increased. Investigation in 1982, State Road 218 from Xinjiang Yuli to Luo Buzhuang section of the road by a total of 115 victims of sand. In 1996, the investigation was carried out by 197 sections of Shahu section. The reason is the long-term cutoff in the lower reaches of the Tarim River, a large number of vegetation such as Populus euphratica dead,