期刊
JOURNAL OF ARID ENVIRONMENTS
卷 57, 期 4, 页码 507-534出版社
ACADEMIC PRESS LTD ELSEVIER SCIENCE LTD
DOI: 10.1016/S0140-1963(03)00113-7
关键词
AVHRR; NDVI; remote sensing; climate-vegetation interactions; North American Monsoon; Southwestern North America
Linear correlations between seasonal and inter-annual measures of meteorological variables and normalized difference vegetation index (NDVI) are calculated at six nearby yet distinct vegetation communities in semi-arid New Mexico, USA Monsoon season (June-September) precipitation shows considerable positive correlation with NDVI values from the contemporaneous summer, following spring, and following summer. Non-monsoon precipitation (October May), temperature, and wind display both positive and negative correlations with NDVI values. These meteorological variables influence NDVI variability at different seasons and time lags. Thus vegetation responds to short-term climate variability in complex ways and serves as a source of memory for the climate system. (C) 2003 Elsevier Ltd. All rights reserved.
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