干旱区生态环境知识资源中心(Arid): 新疆准噶尔东部荒漠区植被覆盖度遥感监测与评估

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	新疆准噶尔东部荒漠区植被覆盖度遥感监测与评估
其他题名	Remote Sensing Monitoring for Assessing Vegetation Coverage in East Juggar Desert of Xinjiang
	夏楠; 塔西甫拉提·特依拜; 依力亚斯江·努尔麦麦提; 高宇潇
来源期刊	环境科学与技术
ISSN	1003-6504
出版年	2017
卷号	40 期号:1 页码:167-173
中文摘要	运用Landsat5/TM、Landsat7/ETM+和Landsat8/OLI传感器分别于2006、2010和2014年在准噶尔东部过境的影像数据,经过影像校正后提取其NDVI,结合像元二分模型计算各年的植被覆盖度。基于ENVI和ArcGIS软件将植被覆盖度分等定级,分别分析荒漠区和绿洲植被的变化情况,计算各年间植被覆盖面积变化转移矩阵,并参照历史气象数据和土地利用数据进行植被覆盖变化因素分析。 2006-2014年研究区植被覆盖度连续降低,同一区域的植被斑块逐年破碎;植被覆盖Ⅰ级和Ⅴ级扩增速率分别达到平均每年0.33%和4.24%,Ⅱ、Ⅲ和Ⅳ级植被退缩速率分别为31%、19%、14%;从2006-2014年整体表现为植被退化面积大于恢复面积并持续退化趋势。降水量和温度共同影响植被覆盖状况。研究区植被退化严重,人为活动和恶劣的环境加速了其退化过程。
英文摘要	This paper described the application of Landsat5/TM, Landsat7/ETM+ and Landsat8/OLI image data (the year 2006, 2010 and 2014) of the east part of Juggar Desert, from which NDVIs were extracted after radiation corrections, and combined with the dimidiate pixel model the vegetation coverage of above three years were calculated, respectively; besides, based on ENVI and ArcGIS the vegetation coverage was classified, the variation between desert and oasis cover in the Juggar Desert was analyzed, and the vegetation coverage variation-transfer-matrix was calculated. Furthermore, in reference to the historical meteorological and land use data the vegetation-variation-factors were analyzed as well. Consequently, the above studies indicated that vegetation coverage continued to declined during the study period (from 2006 to 2014) with vegetation patches being fragmented gradually; and the vegetation coverage annual-expansion-rate was 0.33% for grades Ⅰ and 4.24% for grade Ⅴ, while grades Ⅱ, Ⅲ and Ⅳ, reduced to 31%, 19% and 14%, respectively. To sum up, vegetation in the desert tended to degraded continuously, the degraded vegetation area being larger the recovered one; it were precipitation and temperature during the period that affected the vegetation degradation, in addition, increasing human activities and the harsh natural environment accelerated the phenomenon.
中文关键词	准噶尔荒漠 ; 植被覆盖度 ; 遥感监测 ; 转移矩阵
英文关键词	Juggar Desert vegetation cover remote sensing monitoring transfer matrix
语种	中文
国家	中国
收录类别	CSCD
WOS类目	ENVIRONMENTAL SCIENCES
WOS研究方向	Environmental Sciences & Ecology
CSCD记录号	CSCD:5960864
来源机构	新疆大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/236204
作者单位	新疆大学资源与环境科学学院, 绿洲生态教育部重点实验室, 乌鲁木齐, 新疆 830046, 中国
推荐引用方式 GB/T 7714	夏楠,塔西甫拉提·特依拜,依力亚斯江·努尔麦麦提,等. 新疆准噶尔东部荒漠区植被覆盖度遥感监测与评估[J]. 新疆大学,2017,40(1):167-173.
APA	夏楠,塔西甫拉提·特依拜,依力亚斯江·努尔麦麦提,&高宇潇.(2017).新疆准噶尔东部荒漠区植被覆盖度遥感监测与评估.环境科学与技术,40(1),167-173.
MLA	夏楠,et al."新疆准噶尔东部荒漠区植被覆盖度遥感监测与评估".环境科学与技术 40.1(2017):167-173.