Title :
Using MODIS-based vegetation and moisture indices for oasis landscape monitoring in an arid environment
Author :
Meng-Lung Lin ; Chen, Cheng-wu ; Jyh-yi Shih ; Yung-Tan Lee ; Chung-Hung Tsai ; Yen-Tsui Hu ; Fujun Sun ; Chun-Ying Wang
Author_Institution :
Dept. of Tourism, Aletheia Univ., Taipei, Taiwan
Abstract :
Normalized Difference Vegetation Index (NDVI) and Normalized Difference Moisture Index (NDMI) were compared for an oasis ecosystem in an arid environment. Both indices were computed from 500 m spatial resolution Moderate Resolution Imaging Spectroradiometer (MODIS) reflectance data (8-day composite from 193 to 200) for the period from 2001 to 2008. NDMI were positively correlated with NDVI. R2 values ranging between 0.80 to 0.92. The results indicated that the vegetation dynamics have highly correlated with land surface moisture in an arid environment.
Keywords :
hydrological techniques; hydrology; moisture; radiometry; rain; remote sensing; soil; vegetation; AD 2001 to 2008; MODIS based moisture index; MODIS based vegetation index; MODIS reflectance data; Moderate Resolution Imaging Spectroradiometer; NDMI; NDVI; arid environment; normalized difference moisture index; normalized difference vegetation index; oasis ecosystem; oasis landscape monitoring; Biomass; Ecosystems; Educational institutions; Floods; MODIS; Moisture; Monitoring; Reflectivity; Remote sensing; Vegetation mapping; drought; drought indices; drought risk; local Getis statistic; remote sensing;
Conference_Titel :
Geoscience and Remote Sensing Symposium,2009 IEEE International,IGARSS 2009
Conference_Location :
Cape Town
Print_ISBN :
978-1-4244-3394-0
Electronic_ISBN :
978-1-4244-3395-7
DOI :
10.1109/IGARSS.2009.5417382
