Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.4028/www.scientific.net/KEM.500.149 |
Retrieval of Water Use Efficiency Using Hyperspectral Indices: An Application for Tamarix ramosissima | |
Wang Shanshan1; Chen Xi2![]() ![]() | |
通讯作者 | Wang Shanshan |
会议名称 | International Conference on Advanced Materials in Microwaves and Optics (AMMO 2011) |
会议日期 | SEP 30-OCT 01, 2011 |
会议地点 | Bangkok, THAILAND |
英文摘要 | Many fundamental ecosystem properties and dynamics are monitored by plant water status, particularly in arid ecosystem where water is usually limiting. Although plant water status have been widely assessed using field measurements by ecological methods, approaches for remotely sensing plant water status are largely lacking, particularly diurnal water status. In arid ecosystem, WUE is a dynamic indicator for detecting water status, but also an integrated index for correlating to the plant photosynthesis. In our study, the experiments were conducted on native dominant desert shrub, Tamarix ramosissima, in their original habitats on the southern periphery of Gurbantonggut desert, China. We explored sensitive and useful hyperspectral indices for estimating diurnal WUE at a leaf scale based on diurnal measurements of hyperspectral reflectance, photosynthesis and micrometeorological variables. According to the statistical analysis of relationships between spectral indices and WUE estimation, SR type hyperspectral index is the sensitivity index for WUE estimation. Our results provide useful insights for monitoring desert shrubs diurnal and dynamic water status, using a wide range of available hyperspectral data. |
英文关键词 | Water use efficiency hyperspectral indices tamarix ramosissima |
来源出版物 | ADVANCED MATERIALS IN MICROWAVES AND OPTICS |
ISSN | 1013-9826 |
出版年 | 2012 |
卷号 | 500 |
页码 | 149-+ |
ISBN | ***************** |
出版者 | TRANS TECH PUBLICATIONS LTD |
类型 | Proceedings Paper |
语种 | 英语 |
国家 | Peoples R China;Japan |
收录类别 | CPCI-S |
WOS记录号 | WOS:000306578400030 |
WOS关键词 | DROUGHT STRESS ; REFLECTANCE |
WOS类目 | Materials Science, Multidisciplinary ; Optics ; Physics, Applied |
WOS研究方向 | Materials Science ; Optics ; Physics |
资源类型 | 会议论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/301307 |
作者单位 | 1.Chinese Acad Sci, CAS Grad Sch, Xinjiang Inst Ecol & Geog, Key Lab Oasis Ecol & Desert Environm, Beijing, Peoples R China; 2.Univ Shizuoka, Xinjiang Inst Ecol & Geog, China Fac Agr, Key Lab Oasis Ecol & Desert Environm, Shizuoka 4228526, Japan |
推荐引用方式 GB/T 7714 | Wang Shanshan,Chen Xi,Wang Quan,et al. Retrieval of Water Use Efficiency Using Hyperspectral Indices: An Application for Tamarix ramosissima[C]:TRANS TECH PUBLICATIONS LTD,2012:149-+. |
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