摘要
利用RS和GIS的空间分析技术,以TM遥感影像为主要信息源,通过目视解译的方法提取研究区沙化土地动态变化数据,结合现地调查资料对研究区沙化土地动态变化情况进行分析。结果表明:研究区沙化土地总体呈现出好转的态势,其中以流动沙地减少最为明显,流动沙地主要转化为固定和半固定沙地。分析认为,国家与地方在防沙治沙和环境治理方面实施的法律法规为沙化土地好转提供了政策保障;各项生态建设工程的实施和人们保护生态环境意识的增强,对沙化土地的好转起到了推动作用;区域经济持续稳定的发展为沙化土地好转提供了有力的资金支持。
Using space analysis technologies RS and GIS, and taking the remote sensing image as the major source of information, an analysis is performed on the dynamic variations of desertificated land of the study area, with the data acquired by virtue of visual interpretation as well as the field survey data. The results show that the desertificated land of the study area is generally in an improved situation, among which the most obvious improvement is the area diminution of the shifting sandy lands, which mainly converse into fixed and semi-fixed sandy lands. It is thought by analysis that the laws and regulations implemented by the central and local governments on sand prevention and control provide policy guarantee for the improvement of desertificated land. The realization of various ecological projects and the enhanced public awareness of protection of ecological environment play a promoting role in it, and the sustained and steady development of regional economy provides strong financial support for the same.
出处
《水土保持研究》
CSCD
北大核心
2011年第1期28-30,36,共4页
Research of Soil and Water Conservation
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)
关键词
沙化土地
动态变化
RS
GIS
desertificated land
dynamic variations
RS, GIS
