摘要
本文以三个不同时期Landsat TM遥感影像为主要数据源,采用像元二分模型和重心迁移模型对1990~2010年间开都河流域下游绿洲的植被覆盖情况进行分析。结果表明:(1)1990~2010年间开都河流域下游绿洲四种植被覆盖类型中,极地植被覆盖和高植被覆盖区面积先增加后减少,而低植被覆盖区和中植被覆盖区面积呈现先减少后增加的发展趋;(2)1990~2010年间开都河流域下游绿洲植被覆盖度总体上呈恢复趋势,其中西北部以及南部植被改善较为明显,而北部和西南部以及开都河下游中部植被有所退化;(3)1990~2010年间高植被覆盖类型和低植被覆盖类型重心迁移最为明显。
Based on Landsat TM images during three periods,this paper selected the dimidiate pixel model and barycenter model to analyze the changes of vegetation coverage in the oasis of the lower reaches of Kaidu River Basin District from1990~2010.The results showed that ares of the coverage in polar and high vegetation districts increased first and then decreased,the ares in low and middle vegetation districts cut down first and then increased.Changes in vegetation coverage showed to improve as a whole,only but this improvement was more obvious in northwestern and southern districts,it degraded in northern and southwestern districts.There was a obvious barycenter migration in the high and low vegetation coverage districts from1990to2010.
作者
陈楠
李新国
刘彬
CHEN Nan;LI Xin-guo;LIU Bin(College of Geographic Sciences and Tourism/Xinjiang Normal University, Urumqi 830054, China;Xinjiang Laboratory of Lake Environment and Resources in Arid Zone, Urumqi 830054, China;College of Life Sciences/Xinjiang Normal University, Urumqi 830054, China)
出处
《山东农业大学学报（自然科学版）》
CSCD
2017年第2期199-202,共4页
Journal of Shandong Agricultural University：Natural Science Edition
基金
国家自然科学基金项目:新疆天山南坡中段种子植物区系特征及其垂直分布格局研究(31360039)
国家自然科学基金项目:博斯腾湖西岸湖滨绿洲盐渍土剖面土壤性质演化及其高光谱响应(41661047)
关键词
像元二分模型
重心迁移模型
植被
动态变化
Dimidiate pixel model
Barycenter migration model
vegetation
dynamic changes
