Monitoring Drought Dynamics in the Ejin Oasis using Drought Indices from MODIS Data

The Ejin Oasis in arid environments suffers with frequent drought due to insufficient water resources and abnormally high summer-temperature. Detailed analysis of remote sensing data has been carried out for the years 2001-2006. Vegetative drought indices like Vegetation Condition Index (VCI) and Te...

Full description

Saved in:
Bibliographic Details
Main Authors: Meng-Lung Lin, Yu Cao, Chung-Hsin Juan, Cheng-Wu Chen, I-Chen Hsueh, Qiu-Bing Wang, Yung-Tan Lee
Format: Conference Proceeding
Language:English
Subjects:
Drought
High-resolution imaging
Image resolution
Information analysis
MODIS
Moisture
NDMI
NDVI
Remote monitoring
remote sensing
Spatial resolution
Temperature sensors
Vegetation mapping
VHI
Water resources
Online Access:Request full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The Ejin Oasis in arid environments suffers with frequent drought due to insufficient water resources and abnormally high summer-temperature. Detailed analysis of remote sensing data has been carried out for the years 2001-2006. Vegetative drought indices like Vegetation Condition Index (VCI) and Temperature Condition Index (TCI) and Vegetation Health Index (VHI) have been derived using Normalized Difference Vegetation Index (NDVI) values obtained from TERRA/Moderate Resolution Imaging Spectoradiometer (MODIS). Moisture Condition Index (MCI) has been developed to assess hydrological droughts using Normalized Difference Moisture Index (NDMI) values obtained from MODIS/TERRA. Detailed analyses of spatial and temporal drought dynamics for seasons have been compared through drought index maps generated in geographical information systems environments during the 2001 to 2006 period. Analysis and interpretation of these maps will show the spatial patterns of drought with vegetative drought indices and hydrological drought indices. Furthermore, results will help us to identify the high drought risk areas and the short term trend of drought in the Ejin Oasis.
ISSN:2153-6996
2153-7003
DOI:10.1109/IGARSS.2008.4779852