毛乌素沙地南缘湿地/沙化土地动态变化分析  

Dynamic Changes of Wetlands and Sandification in the South of Musu Sandy Land

作　　者：王晓青[1] 杨联安[2] 姜英[1] 王娟敏[2] 

机构地区：[1]国家林业局西北林业调查规划设计院,西安710048 [2]西北大学城市与资源学系,西安710069

出　　处：《西北林学院学报》2007年第4期73-77,共5页Journal of Northwest Forestry University

基　　金：霍英东教育基金会第九届高等院校青年教师基金优选课题(94005)--抑制土壤风蚀对防治沙尘暴的作用

摘　　要：应用遥感和地理信息等技术手段,获取毛鸟素沙地南缘1999年和2004年湿地和沙化土地时空分布和动态变化数据,并对湿地和沙化土地分布特征和动态变化原因进行了分析。结果表明,5a来研究区域湿地主要分布在河流沿岸并呈现增加态势,沙化土地主要分布在研究区域北部呈条带状分布且总体上呈逆转趋势。湿地的增加和沙化土地逆转说明生态建设取得了可喜的成绩,但生态建设任重道远。Using the technology of RS and GIS, the data of spatial temporal distribution and dynamic changes of wetlands and sandification in the south of Musu sandy land in 1999 and 2004 were obtained. The reasons resulted in the characteristics of distribution and the reasonal dynamic changes were analyzed. The results showed that the wetlands mainly distributed along the river banks with increasing trend, but the sandification distributed in the north of studying area with decreasing trend situation in the past 5 years, indicating that delightiful achievements had been obtained in the eco-construction of this region. However eco-consttruction in desert area has still a long way to go.

关 键 词：湿地 沙化土地 动态变化 分析 

分 类 号：S155[农业科学—土壤学]