干旱区生态环境知识资源中心(Arid): 青海省都兰县察汗乌苏绿洲植被覆盖度变化研究

Arid

	青海省都兰县察汗乌苏绿洲植被覆盖度变化研究
其他题名	Vegetation Coverage Change of Tsagan Us Oasis in Dulan County,Qinghai Province,China
	曹永翔 1; 刘小丹 2; 张克斌3 ; 陈明 3
来源期刊	中国沙漠
ISSN	1000-694X
出版年	2011
卷号	31 期号:5 页码:1266-1272
中文摘要	为研究青海省都兰县察汗乌苏绿洲植被覆盖度变化,利用归一化植被指数NDVI提取察汗乌苏绿洲不同时期的植被覆盖度等级图,定量分析评价植被覆盖度的多年变化。结果表明,近16 a来,察汗乌苏绿洲植被覆盖度总体呈现波动增长趋势,20012006年期间各植被覆盖等级变化幅度明显高于19902001年期间的变化幅度, 19902001年植被整体向好的方向发展,有50 017.50 hm~2的极低覆盖度植被转变为更高覆盖度植被,20012006年增加了6 026.85 hm~2的极低覆盖度植被,并有4 048.47 hm~2的高覆盖度植被减少,说明仍存在局部退化。影响都兰县察汗乌苏绿洲植被覆盖度变化的主要因子是生态工程措施、气候因素和水资源因素。研究结果可以为该区域植被恢复和荒漠化防治提供理论支撑。
英文摘要	In order to study variation of vegetation coverage of Tsagan Us oasis in Dulan county in Qinghai Province of China, the grade map of vegetation coverage in Tsagan Us oasis during different period in 1990-2006 was extracted basing on normalized NDVI data,then the interannual variation of the vegetation coverage was quantitatively analyzed. The result showed that the vegetation coverage of Tsagan Us oasis presented a fluctuating increase trend during the 16 years,and the change range of the vegetation coverage of every grade from 2001 to 2006 was greater than the one from 1990 to 2001. Generally,the vegetation coverage had a restoration trend from 1990 to 2001,and there was 50 017.50 hm2 very low coverage vegetation which was transformed to high coverage vegetation. From 2001 to 2006,there was a increase of 6 026.85 hm2 of very low coverage vegetation and a decrease of 4 048. 47 hm2 high coverage vegetation,indicating local degradation of vegetation coverage. The main factors influencing vegetation coverage included: ecological recovery measures,climate change and water resource change. The research can provide a theory support for vegetation restoration and desertification combating of the research area.
中文关键词	绿洲 ; 植被覆盖度 ; 都兰
英文关键词	NDVI NDVI oasis vegetation coverage Dulan county
语种	中文
国家	中国
收录类别	CSCD
WOS类目	PLANT SCIENCES
WOS研究方向	Plant Sciences
CSCD记录号	CSCD:4311340
来源机构	北京林业大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/227555
作者单位	1.中国水电顾问集团西北勘测设计研究院, 西安, 陕西 710065, 中国; 2.中冶京诚(秦皇岛)工程技术有限公司, 秦皇岛, 河北 066004, 中国; 3.北京林业大学, 水土保持学院水土保持与荒漠化防治教育部重点实验室, 北京 100083, 中国
推荐引用方式 GB/T 7714	曹永翔,刘小丹,张克斌,等. 青海省都兰县察汗乌苏绿洲植被覆盖度变化研究[J]. 北京林业大学,2011,31(5):1266-1272.
APA	曹永翔,刘小丹,张克斌,&陈明.(2011).青海省都兰县察汗乌苏绿洲植被覆盖度变化研究.中国沙漠,31(5),1266-1272.
MLA	曹永翔,et al."青海省都兰县察汗乌苏绿洲植被覆盖度变化研究".中国沙漠 31.5(2011):1266-1272.