干旱区生态环境知识资源中心(Arid): 基于TVDI 的渭干河- 库车河三角洲绿洲植被生长期干旱遥感监测研究

Arid

	基于TVDI 的渭干河- 库车河三角洲绿洲植被生长期干旱遥感监测研究
其他题名	Drought remote sensing monitoring based on the temperature vegetation drought index (TVDI) method during the growth period in Weigan-Kuqa river oasis
	张飞1 ; 田源 2; 塔西甫拉提·特依拜 1; 丁建丽1 ; 谢姆斯叶·艾尼瓦尔 1; 周梅 1
来源期刊	干旱区资源与环境
ISSN	1003-7578
出版年	2014
卷号	28 期号:6 页码:75-81
中文摘要	渭干河-库车河三角洲绿洲是新疆重要农业生产区,频发的旱灾始终是制约农业可持续发展的障碍因素。因此,文中以渭干河-库车河三角洲绿洲为研究区,利用1989年和2011年植被生长期的两期TM影像提取的归一化植被指数(NDVI)和地表温度(Ts),构建Ts-NDVI特征空间,依据该特征空间设计的温度植被干旱指数(TVDI)作为旱情指标,找出适合研究区的旱情判别模式,并进行旱情对比分析。结果表明:1)在Ts-NDVI特征空间中,该绿洲1989年和2011年干旱遥感监测的干、湿边拟合方程分别为T_(Smax)=-13.795NDVI+296.5,T_(Smin)=5.3374NDVI+283.12和T_(Smax)=-27.861NDVI+315.52,T_(Smin)=4.4736NDVI+292.46。说明随着干边斜率增加,湿边斜率也增加,形成稳定的三角形形状,能较好的反映土壤干旱状况;2)从TVDI旱情等级分布图上可以得出等级为干旱的面积有所增加,且这一区域主要集中在绿洲外围,表明随着绿洲内部干旱的缓解,绿洲外围生态环境有所恶化。通过以上研究发现利用温度植被旱情指数(TVDI)法对渭干河-库车河绿洲地区进行夏季干旱动态监测是可行的。
英文摘要	Weigan-Kuqa River Oasis is one of the main agricultural production areas in Xinjiang. The agricultural sustainable development in Weigan-Kuqa River Oasis is always restricted by frequent drought. The temperature vegetation drought index (TVDI) based on the remote sensing technology can raise the precision of remote sensing drought monitoring by effectively reducing the impact of vegetation cover degree. In this paper,we extracted normalized difference vegetation index (NDVI) and temperature of surface (Ts) from TM images in September 1989 and September 2011 and build a Ts-NDVI feature space. Meanwhile,based on the designed feature space,take the TVDI as drought indicators,then according to TVDI,the author divided drought into five grades in order to identify the drought discrimination model suitable for the study area,carry on comparative analysis of drought. It is showed that under the Ts-NDVI space,the equations for dry and wet edges are T_(Smax) =- 13. 795NDVI + 296. 5,T_(Smin) = 5. 3374NDVI + 283. 12 in 1989,and are T_(smax) =-27. 861NDVI + 315. 52, T_(smin) = 4. 4736NDVI + 292. 46 in 2011. This increase with the dry edges of the slope,the slope of the wet edge also increase,and form a stable triangle shape,it can better reflect the drought conditions of the soil. Secondly, it can be drawn from TVDI drought level maps,the drought area is increased during 22 years,and this area is mainly concentrated in the oasis peripheral. It indicated that as internal of oasis drought mitigation,peripheral of oasis ecological environment has deteriorated. Through the above research we found that using temperature vegetation drought index (TVDI) to dynamically monitor the summer droughts in Weigan-Kuqa River oasis region is feasible.
中文关键词	干旱监测 ; 地表温度 ; 温度植被干旱指数 ; Ts-NDVI特征空间
英文关键词	drought remote sensing monitoring temperature of surface (Ts) TVDI Ts-NDVI space
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:5168109
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/2XILL650/231225
作者单位	1.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; 2.新疆维吾尔自治区农业资源区划办公室, 乌鲁木齐, 新疆 830002, 中国
推荐引用方式 GB/T 7714	张飞,田源,塔西甫拉提·特依拜,等. 基于TVDI 的渭干河- 库车河三角洲绿洲植被生长期干旱遥感监测研究[J]. 新疆大学,2014,28(6):75-81.
APA	张飞,田源,塔西甫拉提·特依拜,丁建丽,谢姆斯叶·艾尼瓦尔,&周梅.(2014).基于TVDI 的渭干河- 库车河三角洲绿洲植被生长期干旱遥感监测研究.干旱区资源与环境,28(6),75-81.
MLA	张飞,et al."基于TVDI 的渭干河- 库车河三角洲绿洲植被生长期干旱遥感监测研究".干旱区资源与环境 28.6(2014):75-81.