Estimating terrestrial net primary productivity over India using satellite data

摘要

Net primary productivity (NPP) is the fundamental process in biosphere functioning and is needed for assessing the carbon balance at regional and global scales. Changes in NPP could arise due to anthropogenic effects and climate change, and directly affect human and animal food supplies. Terrestrial NPP is one of the most-modeled ecological processes with models that differ markedly in approach and complexity, often yielding comparable global estimates. With the availability of space-based Remote Sensing (RS) measurements providing global coverage with nearly daily sampling and techniques to estimate absorbed pho-tosynthetically active radiation (APAR), the use of RS data has become the most preferred technique for estimating global NPP.