Site-level evaluation of MODIS-based primary production in an old-growth forest in Northeast China

doi:10.1117/1.3624519

	Site-level evaluation of MODIS-based primary production in an old-growth forest in Northeast China
	Wu, Jiabing 2; Sun, Jinwei 1,2; Guan, Dexin 2; Yang, Hong 2; Yin, Guanghua 2; Wang, Anzhi 2; Yuan, Fenghui 1,2; Jin, Changjie 2
刊名	JOURNAL OF APPLIED REMOTE SENSING
	2011-09-06
卷号	5
关键词	Modis Remote Sensing Global Primary Production Flux Tower
ISSN号	1931-3195
DOI	10.1117/1.3624519
英文摘要	To improve the accuracy of the moderate resolution imaging spectroradiometer (MODIS) gross primary production (GPP) algorithm, it is critical to evaluate MODIS GPP production for different land cover types using ground-based measurements. In this paper the MODIS primary production products (MOD17) is evaluated by using site-specific input parameters to the algorithm and compared to the results of eddy covariance measurements over an old-growth forest. Direct comparisons suggest that 8-day GPP predicted by the standard MODIS algorithm was highly correlated with flux tower based GPP (r(2) = 0.77, P<0.001), while with an average underestimation of 39%. The difference is substantial in magnitude mainly because the inputs of underestimated MODIS biome-specific parameters, maximum light use efficiency epsilon(max) and MODIS derived fraction of photosynthetically active radiation. The modified MODIS algorithm GPP calculated with site-specific input parameters compares favorably with ground flux tower observations (r(2) = 0.92, relative error = 7%). These results suggest that the MODIS GPP production is most likely underpredicted in forest sites with high primary production, and site-specific input parameters could help to improve the accuracy of MODIS GPP algorithm. (C) 2011 Society of Photo-Optical Instrumentation Engineers (SPIE). [DOI: 10.1117/1.3624519]
WOS研究方向	Environmental Sciences & Ecology ; Remote Sensing ; Imaging Science & Photographic Technology
语种	英语
出版者	SPIE-SOC PHOTO-OPTICAL INSTRUMENTATION ENGINEERS
WOS记录号	WOS:000294899000002
内容类型	期刊论文
源URL	[http://210.72.129.5/handle/321005/121869]
专题	中国科学院沈阳应用生态研究所
通讯作者	Wu, Jiabing
作者单位	1.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China 2.Chinese Acad Sci, State Key Lab Forest & Soil Ecol, Inst Appl Ecol, Shenyang 110164, Peoples R China
推荐引用方式 GB/T 7714	Wu, Jiabing,Sun, Jinwei,Guan, Dexin,et al. Site-level evaluation of MODIS-based primary production in an old-growth forest in Northeast China[J]. JOURNAL OF APPLIED REMOTE SENSING,2011,5.
APA	Wu, Jiabing.,Sun, Jinwei.,Guan, Dexin.,Yang, Hong.,Yin, Guanghua.,...&Jin, Changjie.(2011).Site-level evaluation of MODIS-based primary production in an old-growth forest in Northeast China.JOURNAL OF APPLIED REMOTE SENSING,5.
MLA	Wu, Jiabing,et al."Site-level evaluation of MODIS-based primary production in an old-growth forest in Northeast China".JOURNAL OF APPLIED REMOTE SENSING 5(2011).