干旱区生态环境知识资源中心(Arid): 2000-2010年祁连山植被MODIS NDVI的时空变化及影响因素

Arid

	2000-2010年祁连山植被MODIS NDVI的时空变化及影响因素
其他题名	Spatial - temporal changes of vegetation in Qilian Mountains from 2000 to 2010 based on MODIS NDVI data and its affecting factors
	徐浩杰; 杨太保; 曾彪
来源期刊	干旱区资源与环境
ISSN	1003-7578
出版年	2012
卷号	26 期号:11 页码:87-91
中文摘要	利用2000-2010年间的MODIS/NDVI数据和对应的气候资料,研究了近10年来祁连山植被的时空变化及影响因素。结果表明:1)10年来,祁连山年最大化NDVI(MNDVI)增加了2.4%,植被改善、无变化和退化的面积分别占总面积的26.32%、66.42%和7.26%。植被改善的区域分布在冷龙岭、拉脊山、大通山、达坂山、青海南山、走廊南山、托来山等山地以及西宁盆地、湟水谷地周边地区,减少的区域分布在乌鞘岭、庄浪河、古浪河、大通河、石羊河、黑河、疏勒河等河流河谷。2)祁连山不同植被类型MNDVI的年际变化趋势不同。灌丛地、荒漠草原、高寒稀疏草甸MNDVI呈快速增加趋势,高山草原、高山灌丛草甸和高寒草甸MNDVI呈增加趋势,落叶阔叶林、针阔混交林、常绿针叶林MNDVI呈快速下降趋势。3)影响祁连山植被生长的主要因子是气温和降水,局部地区密集的人类活动也能成为影响植被生长的关键因子。
英文摘要	A time series (2000-2010) data set of the Normalized Different Vegetation Index (NDVI) together with historical climate data were used to analyze spatial - temporal changes of vegetation and its affecting factors in Qilian Mountains. The results showed that:①The maximum values of annual NDVI (MNDVI) has increased with an rate of 2.4%/10a since 2000. The greening area, stable area, and the degraded area accounted for 26.32%,66.42% and 7.26% of the total area respectively. MNDVI in the Lenglong Ridge, Laji Mt., Datong Mt., Daban Mt., South Qinghai Mt., Zongwulong Mt., Tuolai Mt., Xining basin and Huangshui valley increased. By contrast, MNDVI decreased in the Wushao Ridge, Zhuanglang River, Gulang river, Datong River, Shiyang River, Hei River and Shule River.②Temporal trends of MNDVI varied in different vegetation types. MNDVI increased significantly in shrubland, desert steppe, alpine grassland and alpine sparse meadow, while decreased significantly in deciduous broad - leaved forest, mixed forest and evergreen coniferous forest. MNDVI increase weakly in alpine shrub meadow and alpine meadow. ③Vegetation changes in Qilian Mountains were mainly influenced by temperature and precipitation. Intensified human activities in local areas also profoundly impacted on vegetation.
中文关键词	时空变化 ; 气候波动 ; 人类活动 ; 祁连山
英文关键词	MODIS/NDVI MODIS/NDVI spatial - temporal variations climatic fluctuation human activities Qilian Mountains
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:4699666
来源机构	兰州大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/228148
作者单位	兰州大学资源环境学院, 兰州, 甘肃 730000, 中国
推荐引用方式 GB/T 7714	徐浩杰,杨太保,曾彪. 2000-2010年祁连山植被MODIS NDVI的时空变化及影响因素[J]. 兰州大学,2012,26(11):87-91.
APA	徐浩杰,杨太保,&曾彪.(2012).2000-2010年祁连山植被MODIS NDVI的时空变化及影响因素.干旱区资源与环境,26(11),87-91.
MLA	徐浩杰,et al."2000-2010年祁连山植被MODIS NDVI的时空变化及影响因素".干旱区资源与环境 26.11(2012):87-91.