摘要
应用遥感和GIS技术及数理统计学方法,以博尔塔拉河、精河流域平原型绿洲为研究区域,利用1990年2、000年和2005年的遥感数据,分析了20世纪90年代以来的16 a间,干旱区典型绿洲土地利用的变化过程和趋势。结果表明:①研究区绿洲土地利用变化突出表现为耕地面积稳步增加,未利用地快速减少,有林地前十年为减势,后五年为增势;②研究区绿洲土地利用变化的类型转换呈现双向态势,但双向变化速度相对一致;③从土地利用程度变化看,土地利用程度提高的速度有减缓的趋势;④根据土地利用对绿洲稳定性影响的理论分析,研究区绿洲稳定性增强,但增加趋势有所放缓。
Using remote sensing imagery data of 1990,2000 and 2005,and taking the typical oasis in alluvial-diluvial fan/alluvial-plain type in Bohe and Jinghe Watershed as the study area,the process and trend of oasis LUCC are analyzed by applying the methods of remote sensing（RS）,geographic information（GIS） and statistics since 1990.The main results of oasis LUCC in Bohe and Jinghe Watershed from 1990～2005 were as follows： ① The change extent of oasis LUCC was that the farmlands increased steadily and the unused lands decreased quickly.Meanwhile,the woodlands decreased in first ten years but increased in the next five years.② The type conversion of oasis LUCC showed obvious transitional process in bi-direction.But the state of oasis LUCC was quasi-balanced in transitional speed. ③ The degree of land use had improved.But the trend of that became slow.④ The oasis stability became strong but the speed got slow in Bohe and Jinghe Watershed based on the theoretic analysis of the relation that land use affects oasis stability.
出处
《干旱地区农业研究》
CSCD
北大核心
2011年第2期191-197,共7页
Agricultural Research in the Arid Areas
基金
新疆维吾尔自治区自然科学基金(2010211B10)
新疆维吾尔自治区自然科学基金(200833118)
国家自然科学基金(40961039)
