首页|Retrieval of Water Use Efficiency Using Hyperspectral Indices: An Application for Tamarix ramosissima
Retrieval of Water Use Efficiency Using Hyperspectral Indices: An Application for Tamarix ramosissima
扫码查看
点击上方二维码区域，可以放大扫码查看
原文链接
NETL
Trans Tech Publications Ltd
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。
water use efficiencyhyperspectral indicestamarix ramosissima
Wang Shanshan、Chen Xi、Wang quan、Bao An-ming
展开 >
Key laboratory of oasis ecology and desert environment, Xinjiang Institute of Ecology and Geography, CAS Graduate School, Chinese Academy of Sciences , Beijing, China
Key laboratory of oasis ecology and desert environment, Xinjiang Institute of Ecology and Geography, CAS Urumqi, China, Faculty of Agriculture, Shizuoka University, Shizuoka, Japan
AMMO2011;International Conference on Advanced Materials in Microwaves and Optics
NETL
Trans Tech Publications Ltd
