干旱区生态环境知识资源中心(Arid): 基于温度植被干旱指数的松辽平原干旱时空特征

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	基于温度植被干旱指数的松辽平原干旱时空特征
其他题名	Spatiotemporal Change of Drought over the Songliao Plain Based on TVDI
	王婷婷; 张洪岩; 郭笑怡; 张正祥; 赵建军
来源期刊	干旱区研究
ISSN	1001-4675
出版年	2014
卷号	31 期号:3 页码:383-389
中文摘要	利用MODIS 产品数据,采用TVDI 方法,分析基于生态地理区的松辽平原干旱时空分布变化特征,探讨不同土地利用类型与干旱程度关系,结果显示: 利用TVDI 获取干旱情况与实际相符合,是进行干旱监测一种有效手段。反演结果与郑度等对此区域生态地理区划分一致: 干旱年际变化差异较大,分布差异明显,2009年干旱分布面积最广,而2004年干旱面积最小; 从干旱统计来看, 2005年比2004年更湿润。研究区总体呈湿润趋势,湿润面积占总面积的84. 95%,主要集中在耕地、林地和草地。水体类型不能利用TVDI 方法进行干旱监测。
英文摘要	Drought is a kind of natural disaster occurring frequently and affecting agricultural production in China, and it is important to improve the ecological environment,optimize the land allocation and water resources redistribution, and relieve the shortage of ecological resources in arid zone. The MODIS sensor is significantly advantageous in monitoring land use change because of its high spectral resolution,high temporal resolution and appropriate spatial resolution. Temperature vegetation drought index (TVDI) is widely used,and there are many evidences to reveal that it is a reasonable and effective way in monitoring land use change related significantly to drought. TVDI is of an important theoretical significance in drought monitoring,crop irrigation,agricultural production,pasture conservation,forest fire detection,etc. By using TVDI method from MODIS product,the spatiotemporal distribution of drought can be derived to explore the relationship between different land use types and drought over the Songliao Plain based on eco-geographical regionalization. The eco-geographical regionalization system is based on the biological and non-biological factors. This study revealed that TVDI turns out to be an effective way to get drought conditions,and the result was consistent with Zheng Dus eco-geographical regionalization theory. Temporal and spatial variation of drought in the study area was quite different from different time and different subregions during the period from 2002to 2009. The area of drought was the largest in 2009 but the smallest in 2004. Holistically, the study area was in a wetting trend,and the proportion of wetting area including mainly the cropland,woodland and grassland was as high as 84. 95%. TVDI could not be used to monitor waters.
中文关键词	干旱 ; 生态地理区划 ; 时空分布 ; MODIS 产品数据 ; 土地利用
英文关键词	TVDI drought TVDI eco-geographical regionalization spatiotemporal distribution MODIS product land use
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:5141952
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/231164
作者单位	东北师范大学地理科学学院, 长春, 吉林 130024, 中国
推荐引用方式 GB/T 7714	王婷婷,张洪岩,郭笑怡,等. 基于温度植被干旱指数的松辽平原干旱时空特征[J],2014,31(3):383-389.
APA	王婷婷,张洪岩,郭笑怡,张正祥,&赵建军.(2014).基于温度植被干旱指数的松辽平原干旱时空特征.干旱区研究,31(3),383-389.
MLA	王婷婷,et al."基于温度植被干旱指数的松辽平原干旱时空特征".干旱区研究 31.3(2014):383-389.