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Proceedings Paper

Modeling gross primary production in Jiangxi Province using MODIS images
Author(s): Shihua Li; Zheng Niu; Huimin Yan; Wenbo Xu
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Paper Abstract

Gross primary production (GPP) is the total amount of atmospheric carbon (CO2) assimilated by vegetation. In this article, a regional terrestrial ecosystem GPP estimation model REG-PEM(REGion Production Efficiency Model) is developed based on light use efficiency theory, and 8-day composite and annual GPP are calculated using REG-PEM model in Jiangxi province. The REG-PEM model was designed on the basis of the production efficiency concept in which gross primary production is calculated from the products of the photosynthetically active radiation (PAR) absorbed by the vegetation(APAR) and light use efficiency, and all the input data get from remote sensing method. GPP are calculated using MODIS 8-day composite products and total ozone mapping spectrometer (TOMS) reflectance data in Jiangxi province in 2003 and 2004. GPP increases in spring, reaches maximum in summer and decreases in autumn, and fluctuates in the year. The results indicate that the REG-PEM model is capable of tracking seasonal dynamics and interannual variations in GPP at a 8-day temporal resolution.

Paper Details

Date Published: 29 December 2008
PDF: 11 pages
Proc. SPIE 7285, International Conference on Earth Observation Data Processing and Analysis (ICEODPA), 72854G (29 December 2008); doi: 10.1117/12.816090
Show Author Affiliations
Shihua Li, Univ. of Electronic Science and Technology of China (China)
State Key Lab. of Remote Sensing Science (China)
Zheng Niu, State Key Lab. of Remote Sensing Science (China)
Huimin Yan, Institute of Geographic Sciences and Natural Resources Research (China)
Wenbo Xu, Univ. of Electronic Science and Technology of China (China)


Published in SPIE Proceedings Vol. 7285:
International Conference on Earth Observation Data Processing and Analysis (ICEODPA)

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