Title :
Vegetation temperature condition index and its application for drought monitoring
Author :
Wang, Peng-xin ; Li, Xiao-wen ; Gong, Jian-ya ; Song, Conghe
Author_Institution :
Nat. Lab. for Inf. Eng. in Surveying, Mapping & Remote Sensing, Wuhan Univ., Hubei, China
Abstract :
An index called vegetation temperature condition index (VTCI) was developed for drought monitoring in this study. The index can be used to monitor drought occurrences at a regional level for a special period (e.g. 10 days) of a year, and can be also used to study the spatial distribution of drought within the region. VTCI is not only related to NDVI changes in the region, but also related to land surface temperature changes of pixels with the same NDVI value. A pilot study was carried out for drought monitoring in the Guanzhong Plain area of the Loess Plateau in the Northwest China. The results showed that VTCI had better performances in classifying the relative drought occurrence levels and in studying the distribution of drought occurrences
Keywords :
hydrological techniques; monitoring; rain; remote sensing; Guanzhong Plain area; Loess Plateau; NDVI changes; Northwest China; VTCI; drought monitoring; land surface temperature changes; spatial distribution; vegetation temperature condition index; Condition monitoring; Crops; Geography; Laboratories; Land surface; Land surface temperature; Remote monitoring; Soil; Temperature sensors; Vegetation mapping;
Conference_Titel :
Geoscience and Remote Sensing Symposium, 2001. IGARSS '01. IEEE 2001 International
Conference_Location :
Sydney, NSW
Print_ISBN :
0-7803-7031-7
DOI :
10.1109/IGARSS.2001.976083
