LIU Aixia, WANG Changyao, LIU Zhengjun, NIU Zheng. Application of NOAA-AVHRR to Desertification Monitoring for Western China[J]. Geomatics and Information Science of Wuhan University, 2004, 29(10): 924-927.
Citation: LIU Aixia, WANG Changyao, LIU Zhengjun, NIU Zheng. Application of NOAA-AVHRR to Desertification Monitoring for Western China[J]. Geomatics and Information Science of Wuhan University, 2004, 29(10): 924-927.

Application of NOAA-AVHRR to Desertification Monitoring for Western China

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  • Received Date: May 14, 2004
  • Published Date: October 04, 2004
  • The primary purpose of this study is to estimate the boundary between vegetated and non-vegetated areas and to assess the condition of desertification in western China located in arid and semiarid regions. Vegetation is very sparse in desert and therefore onset of green-up in the desert was undetectable with AVHRR NDVI data. The occurrence of onset of green-up, as determined with time series NDVI data, is used to identify desert and non-desert areas. The coefficient of variation (CoV) of the monthly NDVI (maximum-value composite) is used as a parameter to characterize the changes of vegetation in this work.
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