摘要
介绍了石羊河流域荒漠化程度变化的历史沿革。通过对1999年和2004年荒漠化监测结果的对比表明,石羊河流域荒漠化总面积增加了164 271.6 hm^2,比1999年增长6.47%,年均递增率1.29%。分别从荒漠化类型变化和程度变化两方面分析了石羊河流域荒漠化现状。进一步的监测结果显示石羊河流域荒漠化的发展趋势为整体好转局部恶化。
The historical change of desertification in Shiyang River basin was introduced and the desertification monitoring results in 1999 and 2004 were analyzed. The total area of desertification was found to increase by 6.47%, about 164271.6 hm^2 from 1999 to 2004, with an average annual increase by1.29%. From the view desertification changes in type and degree, it is concluded that the desertification evolution trend of Shiyang River basin is characterized by the whole improvement but local deterioration.
出处
《水土保持通报》
CSCD
北大核心
2007年第6期145-148,共4页
Bulletin of Soil and Water Conservation
关键词
石羊河流域
荒漠化
水资源
Shiyang River basin
desertification
water resource
