| Characters of spectrum of winter wheat canopy and its response to drought in the mountainous region of south Ningxia |
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| DOI：10.7606/j.issn.1000-7601.2010.02.03 |
| Key Words: mountainous region of south Ningxia winter wheat spectrum character drought |
| Author Name | Affiliation | | ZHANG Lei | Ningxia Key Lab for Meteorological Disaster Prevention and Reduction, Yinchuan, Ningxia 750002, China
Ningxia Meteorological Science Institute, Yinchuan, Ningxia 750002, China | | LIU Jing | Ningxia Key Lab for Meteorological Disaster Prevention and Reduction, Yinchuan, Ningxia 750002, China
Ningxia Meteorological Science Institute, Yinchuan, Ningxia 750002, China | | ZHANG Xueyi | Ningxia Meteorological Science Institute, Yinchuan, Ningxia 750002, China | | HAN Yingjuan | Ningxia Meteorological Science Institute, Yinchuan, Ningxia 750002, China | | YUAN Haiyan | Ningxia Meteorological Science Institute, Yinchuan, Ningxia 750002, China |
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| Abstract: |
| The canopy spectrum characters were observed, by Unispec-SC mono channel portable spectrograph, in the Zhongyin-16 winter wheat fields under different water supply treatments arranged at Longde county. According to many vegetation index methods calculated by MODIS data, the vegetation indexes by canopy spectrum observation data were calculated and selected which responded to drought sensitively. The result shows that the canopy spectrum difference between various drought treatments is in evidence in the period of milky and filling. Although the spectrum curves are similar, the reflection rate in most of spectrum band is different. We should select RVI and NDVI first, and EVI second, to monitor winter wheat drought in south Ningxia. |
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