干旱区生态环境知识资源中心(Arid): 利用植被指数-地表温度特征空间反演干旱区土壤干湿状况

Arid

	利用植被指数-地表温度特征空间反演干旱区土壤干湿状况
其他题名	Assessment of Arid area Soil Moisture Status Based on Characteristics of Surface Temperature/vegetation Index Space
	王家强 1; 梁继业 2; 李志军 2; 伍维模 2; 于军 2; 韩路 2
来源期刊	土壤通报
ISSN	0564-3945
出版年	2014
卷号	45 期号:1 页码:39-46
中文摘要	土壤干湿状况是监测土地退化的重要指标之一,是植物物生长发育的关键因素;准确地估计土壤湿度在时空上的分布状况对理解生态系统有着重要的意义,且对干旱区农业生产及生态重建也具有重要价值。研究分析了两种植被指数(NDVI,MSAVI)构建的特征空间参数的特征;同时,在考察点尺度上,分析了旱情指数TVDI与土壤含水量的关系;并揭示了研究区TVDI的空间分布规律;结果表明:T_s/MSAVI空间和T_s/NDVI空间干边的拟合系数均大于0.90,湿边拟合的效果稍差,而T_s/1MSAVI构成的特征空间其拟合的干湿边更易相交,与地表温度结合,更能表示地表湿度的变化情况;TVDIM与TVDIN同土壤含水量表现为极显著负相关,且TVDIM与土壤含水量的相关性大于TVDIN与土壤含水量的相关性;T_s/MSAVI特征空间和T_s/NDVI特征空间反演的旱情指数TVDI,在空间分布上是较为相似的。
英文摘要	Soil moisture has been considered as one of the most important indicators of soil conditions. It also is the decisive factor affecting crop growth. Accurate estimation of soil moisture in space and time is very important to understand the earth system. It also is of great significance to agricultural production and ecological reconstruction in arid areas. Two feature space parameter, NDVI and MSAVI, were established in this study. Characteristics of NDVI and MSAVI were compared. The relationship between drought index (TVDI) and soil water content was analyzed. The spatial distribution of TVDI was studied. Results showed that: dry edge fitting coefficients of T_s/MSAVI space and T_s/NDVI space are more than 0.90; whereas fitting coefficients of wet edge were not so good as those of dry edge; dry edge and wet edge of T_s/MSAVI space were more likely to intersect; combined with soil surface temperature, the T_s/MSAVI space could represent changes of soil surface humidity well; highly significant negative correlation were found between soil water content and TVDIM, and TVDIN; spatial distribution of TVDI predicted by T_s/MSAVI space was similar to that of TVDI estimated from T_s/NDVI space.
中文关键词	特征空间 ; 干旱区 ; 土壤干湿状况
英文关键词	Feature space Arid region Soil dry and wet conditions
语种	中文
国家	中国
收录类别	CSCD
WOS类目	ECOLOGY
WOS研究方向	Environmental Sciences & Ecology
CSCD记录号	CSCD:5046486
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/231837
作者单位	1.塔里木大学植物科学学院, 阿拉尔, 新疆 843300, 中国; 2.塔里木大学植物科学学院, 新疆省生产建设兵团塔里木盆地物资源保护与利用重点实验室, 阿拉尔, 新疆 843300, 中国
推荐引用方式 GB/T 7714	王家强,梁继业,李志军,等. 利用植被指数-地表温度特征空间反演干旱区土壤干湿状况[J],2014,45(1):39-46.
APA	王家强,梁继业,李志军,伍维模,于军,&韩路.(2014).利用植被指数-地表温度特征空间反演干旱区土壤干湿状况.土壤通报,45(1),39-46.
MLA	王家强,et al."利用植被指数-地表温度特征空间反演干旱区土壤干湿状况".土壤通报 45.1(2014):39-46.