干旱区生态环境知识资源中心(Arid): 石羊河流域上游植被时空变化及其对区域气候的响应

Arid

	石羊河流域上游植被时空变化及其对区域气候的响应
其他题名	Spatiotemporal Changes of Vegetation and the Responses to Temperature and Precipitation in Upper Shiyang River Basin
	唐志光 1; 马金辉 2; 李朝奎 1; 彭焕华 1; 梁继 1
来源期刊	地理与地理信息科学
ISSN	1672-0504
出版年	2016
卷号	32 期号:3 页码:116-120
中文摘要	利用1999-2013年的SPOT-VEGETATION NDVI时间序列数据和降水、气温数据,对石羊河流域上游近15年的植被变化特征及其对降水和气温的响应关系进行了研究。结果表明:研究区NDVI的空间分布具有明显的垂直地带性;近15年中,81.3%的地区植被生长季NDVI呈增长趋势;研究区平均NDVI在春、夏、秋季及植被生长季的增长幅度分别为11.75%、9.62%、5.98%和7.75%,植被生长季在延长。气候变化对研究区植被的影响随植被类型及其生长季节的不同而具有明显差异,体现出较大的时空异质性;降水是影响研究区植被变化的主要因素。
英文摘要	The Shiyang River Basin is a typical arid inland river basin in northwestern China.It is also a well-known fragile area of water resource and ecological environment,and a sensitive area of climate change.The vegetation in Shiyang River Basin is mostly concentrated in its upstream,and plays an important role in ecological environment of this watershed.Therefore,studies on the spatiotemporal variation of vegetation in the upper Shiyang River Basin and the impacts of changing temperature and precipitation on the vegetation growth are of significance to dealing with climate change,realizing sustainable development of ecological environment in Shiyang River Basin.In this study,the spatiotemporal changes of vegetation growth in upper Shiyang River Basin together with their responses to climate changes were investigated using SPOT-VEGETATION Normalized Difference Vegetation Index(NDVI)and climate datasets from 1999 to 2013.Results reveal that there is an obvious vertical zonal characteristic of the spatial distribution of NDVI.About 81.3% of the study area shows an increasing trend in growing season NDVI.The average NDVI of the study area increases at rates of 7.75% for the growing season(March-November),11.75% for spring(March-May),9.62% for summer(June-August),and 5.98% for autumn(September-November)over the study period.The increase of NDVI in spring and autumn suggests the growing season of the vegetation in this study area has been prolonged.The effects of climate changes on vegetation growth vary with the types of vegetation and seasons,which shows a large spatial and temporal heterogeneity.As compared with temperature,precipitation is the dominant climatic factor affecting the interannual variations of vegetation.
中文关键词	石羊河流域 ; 植被 ; 时空变化 ; 气候变化
英文关键词	NDVI Shiyang River Basin vegetation NDVI spatiotemporal changes climate change
语种	中文
国家	中国
收录类别	CSCD
WOS类目	GEOSCIENCES MULTIDISCIPLINARY
WOS研究方向	Geology
CSCD记录号	CSCD:5722108
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/2XILL650/234078
作者单位	1.湖南科技大学, 地理空间信息技术国家地方联合工程实验室, 湘潭, 湖南 411201, 中国; 2.兰州大学, 西部环境教育部重点实验室, 兰州, 甘肃 730000, 中国
推荐引用方式 GB/T 7714	唐志光,马金辉,李朝奎,等. 石羊河流域上游植被时空变化及其对区域气候的响应[J]. 兰州大学,2016,32(3):116-120.
APA	唐志光,马金辉,李朝奎,彭焕华,&梁继.(2016).石羊河流域上游植被时空变化及其对区域气候的响应.地理与地理信息科学,32(3),116-120.
MLA	唐志光,et al."石羊河流域上游植被时空变化及其对区域气候的响应".地理与地理信息科学 32.3(2016):116-120.