Estimating and Validating Wheat Leaf Water Content with Three MODIS   Spectral Indexes: A Case Study in Ningxia Plain, China

CORC > 北京大学 > 地球与空间科学学院

	Estimating and Validating Wheat Leaf Water Content with Three MODIS Spectral Indexes: A Case Study in Ningxia Plain, China
	Zhao, S. ; Wang, Q. ; Yao, Y. ; Du, S. ; Zhang, C. ; Li, J. ; Zhao, J.
刊名	JOURNAL OF AGRICULTURAL SCIENCE AND TECHNOLOGY
	2016
关键词	Near infrared band Remote sensing Short wave infrared band Spectral characteristic index Validation STRESS INDEX VEGETATION REFLECTANCE SENSITIVITY DERIVATION SATELLITE CANOPIES SOYBEANS CORN
英文摘要	Water content plays an important role in the process of plant photosynthesis and biomass accumulation. Many methods have been developed to retrieve canopy leaf water content from remote sensing data. However, the validity of these methods has not been verified, which limits their applications. This study estimates the Leaf Water Content (LWC) of winter wheat with three most widely used indexes: Normalized Difference Water Index (NDWI), Simple Ratio (SR), and Shortwave Infrared Perpendicular Water Stress Index (SPSI), as well as MODIS short wave and near infrared data, and then compares remote sensing estimates of vegetation water content with field-measured values measured in concurrent dates. The results indicate that the three indexes are significantly correlated with the LWC of winter wheat at the 0.01 significance level. They all have good accuracy with higher than 90%. The indexes derived from MODIS bands 6 and 2 were better than those from bands 7 and 2 for measuring wheat leaf water content, and the correlations of the former two (NDWI and SR) were stronger than that of SPSI.; National Natural Science Foundation of China [41101313, 41201331]; High Resolution Earth Observation Systems of National Science and Technology Major Projects [E05-Y30B02-9001-13/15-1]; National High Technology Research and Development Program of China (863 Program) [2013AA122003]; Science and Technology Develop Project of Shandong Province [2012GSF11713]; SCI(E); ARTICLE; zshyytt@126.com; 2; 387-398; 18
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/438540]
专题	地球与空间科学学院
推荐引用方式 GB/T 7714	Zhao, S.,Wang, Q.,Yao, Y.,et al. Estimating and Validating Wheat Leaf Water Content with Three MODIS Spectral Indexes: A Case Study in Ningxia Plain, China[J]. JOURNAL OF AGRICULTURAL SCIENCE AND TECHNOLOGY,2016.
APA	Zhao, S..,Wang, Q..,Yao, Y..,Du, S..,Zhang, C..,...&Zhao, J..(2016).Estimating and Validating Wheat Leaf Water Content with Three MODIS Spectral Indexes: A Case Study in Ningxia Plain, China.JOURNAL OF AGRICULTURAL SCIENCE AND TECHNOLOGY.
MLA	Zhao, S.,et al."Estimating and Validating Wheat Leaf Water Content with Three MODIS Spectral Indexes: A Case Study in Ningxia Plain, China".JOURNAL OF AGRICULTURAL SCIENCE AND TECHNOLOGY (2016).