摘要
玛曲县地处黄河上游 ,属江河源区 ,其生态作用对黄河的安危有直接影响。作者运用遥感与地面调查相结合的方法 ,对玛曲县的土地沙漠化及其发展趋势进行了研究。结果表明 :全县沙漠化土地总面积 6 0 80 .0hm2 ,基本沿黄河分布于冲洪积滩地 ,以每年 6 8%的速率扩展。土地沙漠化是自然与人为因素共同作用的结果 ,以过牧为主导因素。沙漠化治理是黄河综合整治。
Maqu county is in upstream of Huanghe river, the source of the river. This paper gives a research on desertification and its development trend in Maqu county, using the method of romote sensing and on\|spot serveying. The results show that the total area of desertification land in the county reaches \{6 080.0\} hm 2 , desertification land distributes along Huanghe river, and it is expanding at the rate of 6 8% per year. And land desertication develops as a result of the comprehensive effects of environment and human activity. The controlling of desertification is needed for overall control of Huanghe River, conservation of plateau wet\|field and sustainable development of pastoral area.
出处
《中国沙漠》
CSCD
北大核心
2001年第1期84-87,共4页
Journal of Desert Research
