Convergence of dynamic vegetation net productivity responses to precipitation variability from 10 years of MODIS EVI

G. Ponce, S. Moran, A. Huete, C. Bresloff, T. Huxman, D. Bosch, J. Bradford, A. Buda, S. Gunter, H. McNab, Mitchel McClaran, D. Peters, J. Sadler, M. Seyfried, P. Starks, D. Sutherland Montoya, T. Heartsill

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

According to Global Climate Models (GCMs) the occurrence of extreme events of precipitation will be more frequent in the future. Therefore, important challenges arise regarding climate variability, which are mainly related to the understanding of ecosystem responses to changes in precipitation patterns. Previous studies have found that Above-ground Net Primary Productivity (ANPP) was positively related to increases in annual precipitation and this relation may converge across biomes during dry years. One challenge in studying this ecosystem response at the continental scale is the lack of ANPP field measurements over extended areas. In this study, the MODIS EVI was utilized as a surrogate for ANPP and combined with precipitation datasets from twelve different experimental sites across the United States over a 10-year period. Results from this analysis confirmed that integrated-EVI for different biomes converged toward common precipitation use efficiency during water-limited periods and may be a viable surrogate for ANPP measurements for further ecological research.

Original languageEnglish (US)
Title of host publication34th International Symposium on Remote Sensing of Environment - The GEOSS Era: Towards Operational Environmental Monitoring
Publication statusPublished - 2011
Event34th International Symposium on Remote Sensing of Environment - The GEOSS Era: Towards Operational Environmental Monitoring - Sydney, NSW, Australia
Duration: Apr 10 2011Apr 15 2011

Other

Other34th International Symposium on Remote Sensing of Environment - The GEOSS Era: Towards Operational Environmental Monitoring
CountryAustralia
CitySydney, NSW
Period4/10/114/15/11

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Keywords

  • ANPP
  • IEVI
  • MODIS
  • Precipitation

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Environmental Engineering

Cite this

Ponce, G., Moran, S., Huete, A., Bresloff, C., Huxman, T., Bosch, D., ... Heartsill, T. (2011). Convergence of dynamic vegetation net productivity responses to precipitation variability from 10 years of MODIS EVI. In 34th International Symposium on Remote Sensing of Environment - The GEOSS Era: Towards Operational Environmental Monitoring