NDLI: Comparison and implementation of the global models of terrestrial net primary productivity

Content Provider	IEEE Xplore Digital Library
Author	Xuyang Wang Xianfeng Zhang Huiyi Bao Jiepeng Zhao Chunhua Liao
Copyright Year	2011
Description	Author affiliation: Institute of Remote Sensing and GIS, Peking University, 5 Summer Palace RD., Beijing 100871, China (Xuyang Wang; Xianfeng Zhang; Huiyi Bao; Jiepeng Zhao; Chunhua Liao)
Abstract	This paper examines three types of models for estimating global terrestrial net primary productivity (NPP) and the comparison of the climate models, eco-physiological process models, and light use efficiency (LUE) models were conducted. The results show that the light use efficiency models are more powerful and easy to be implemented in the estimation of NPP, especially when some biogeochemistry variables are hard to be quantified. As a case study, a LUE model, CASA model is then used to estimate the NPP values of the southern border of the Junggar Basin, Xinjiang in 2009. The estimated NPP values were then verified using in-situ measurements of NPP which were collected in the study area. The result demonstrated that the CASA model can achieve relatively accurate estimation of NPP in the southern border of the Junggar Basin, Xinjiang. However, due to the fact that the LUE models such as CASA lacks of the characterization of eco-physiological processes, they consequently lead to some uncertainty and inaccuracy in the estimation of global and regional NPP. Future work will be focused on incorporating the remotely sensed data and related ecosystem processes into the light use efficiency models.
Starting Page	2051
Ending Page	2054
File Size	767280
Page Count	4
File Format	PDF
ISBN	9781424491728
e-ISBN	9781424491711
DOI	10.1109/RSETE.2011.5964708
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-06-24
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Productivity CASA Biological system modeling Ecosystems Estimation Eco-physiological process model Sensors Light use efficiency model Remote sensing NPP
Content Type	Text
Resource Type	Article

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