Assessment of Vegetation Response to Drought in Nebraska Using Terra-MODIS Land Surface Temperature and Normalized Difference Vegetation Index

作者：Swain Sharmistha; Wardlow Brian D; Narumalani Sunil^*; Tadesse Tsegaye; Callahan Karin

来源：GIScience and Remote Sensing, 2011, 48(3): 432-455.

DOI：10.2747/1548-1603.48.3.432

Eight-day composite Terra-MODIS cumulative LST and NDVI time-series data were used to analyze the responses of crop and grassland cover types to drought in Nebraska. Four hundred ninety 1 km pixels that included irrigated and non-irrigated corn and soybeans and three grassland cover types were selected across the state of Nebraska. Statistical analyses revealed that the majority of the land cover pixels experienced significantly higher daytime and nighttime LSTs and lower NDVI during the drought-year growing season (p < 0.01). Among the land cover types analyzed, grassland experienced the highest increase in daytime LST and decrease in NDVI.

• 出版日期2011-9