Evaluating the difference between the normalized difference vegetation index and net primary productivity as the indicators of vegetation vigor assessment at landscape scale.

@article{Xu2012EvaluatingTD,
  title={Evaluating the difference between the normalized difference vegetation index and net primary productivity as the indicators of vegetation vigor assessment at landscape scale.},
  author={Chi Xu and Yutong Li and Jianwen Hu and Xuejiao Yang and Sheng Sheng and Maosong Liu},
  journal={Environmental monitoring and assessment},
  year={2012},
  volume={184 3},
  pages={1275-86}
}
Both the net primary productivity (NPP) and the normalized difference vegetation index (NDVI) are commonly used as indicators to characterize vegetation vigor, and NDVI has been used as a surrogate estimator of NPP in some cases. To evaluate the reliability of such surrogation, here we examined the quantitative difference between NPP and NDVI in their outcomes of vegetation vigor assessment at a landscape scale. Using Landsat ETM+ data and a process model, the Boreal Ecosystem Productivity… CONTINUE READING