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

Volume

4

fYear

2009

fDate

12-17 July 2009

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/IGARSS.2009.5417382

Filename

5417382