摘要
利用1980-2009年的9期KATE-200,Landsat-5TM影像数据,提取绿洲空间数据,分析了绿洲面积变化趋势,利用统计分析法确定绿洲变化的主要人文驱动力,结合统计资料、实地访谈调查结果分析绿洲变化驱动力.结果表明:近30年高台县绿洲总体处于扩张趋势,其主要原因是移民导致的人口增加、科技进步以及社会经济发展,同时政策因素也对绿洲变化有指引性作用,但是在不同时期绿洲扩张的主要驱动力不同.
Distribution of oasis in Gaotai County was extracted by taking 9 images from 1980-2009 as the data source, including Landsat-5TM and KATE-200. Then the changing trend in the area of oases was accurately analyzed. The major human driving factors were selected by a statistical analysis, those behind oasis changes were analyzed combined with statistical materials, interviews and surveys. The results showed that the overall oasis was undergoing expansion during the nearly 30 years, mainly because of the increase in population due to immigration, technological and socio-economic development, while policy factors were guidelines for oasis changes. The main driving forces behind oasis changes were varied in different periods.
出处
《兰州大学学报（自然科学版）》
CAS
CSCD
北大核心
2014年第2期180-185,共6页
Journal of Lanzhou University(Natural Sciences)
基金
国家自然科学基金项目(91025010)
关键词
绿洲变化
驱动力
高台县
oasis change
driving force
Gaotai County
