IGSNRR OpenIR
Improved modeling of gross primary productivity (GPP) by better representation of plant phenological indicators from remote sensing using a process model
Wang, Jian1,2; Wu, Chaoyang2,3; Zhang, Chunhua4; Ju, Weimin5; Wang, Xiaoyue1,2; Chen, Zhi3; Fang, Bin6
2018-05-01
Source PublicationECOLOGICAL INDICATORS
ISSN1470-160X
Volume88Pages:332-340
Corresponding AuthorWu, Chaoyang(wucy@igsnrr.ac.cn)
AbstractPhenology is a significant indicator of ecosystem functioning and is one of the most important controllers of gross primary productivity (GPP). The Integrated Terrestrial Ecosystem C-budget model (InTEC) predicts carbon cycling by modeling a number of ecosystem processes, and in particularly, phenology derived from a degree-day metric. However, empirical temperature thresholds may not well represent ecosystem growth at low latitudes. Here, using 30-year Advanced Very High Resolution Radiometer (AVHRR) normalized difference vegetation index 3rd generation (NDVI3g) data (1983-2012), we obtained the start (SOS), end (EOS) and length of growing season (LOS) with three algorithms from time series of NDVI for forests ecosystems of China. The phenology module was then incorporated into the InTEC model before validation using ground observations from eddy covariance measurements. Our results showed that compared with temperature-based phenology of the original model, using NDVI-based phenology improved modeling of GPP. The modified InTEC model was used to analyze the spatial and temporal patterns of GPP for forest ecosystems of China during 1983 to 2012. We found that remote sensing-based phenology was more reliable than temperature-based phenology for large-scale analysis. Using the modified InTEC model, we revealed that the GPP of China's forests ecosystems increased over 1983-2012 with high spatial heterogeneity, with a mean of 1.31 Pg Cyr(-1). Our results demonstrated the significance of remotely sensed phenology for improving the accuracy of GPP modeling with ecosystem models, which is enlightening for the large-scale evaluation of carbon sequestration.
KeywordChina InTEC Phonology NDVI GPP
DOI10.1016/j.ecolind.2018.01.042
WOS KeywordNET PRIMARY PRODUCTIVITY ; LAND-SURFACE PHENOLOGY ; TERRESTRIAL ECOSYSTEMS ; GROWING-SEASON ; VEGETATION PHENOLOGY ; CARBON BALANCE ; NORTH-AMERICA ; CHINA FORESTS ; TIME-SERIES ; SATELLITE
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[41522109] ; National Natural Science Foundation of China[41601054] ; Research Program of Frontier Sciences, CAS[QYZDB-SSW-DQC011]
Funding OrganizationNational Natural Science Foundation of China ; Research Program of Frontier Sciences, CAS
WOS Research AreaBiodiversity & Conservation ; Environmental Sciences & Ecology
WOS SubjectBiodiversity Conservation ; Environmental Sciences
WOS IDWOS:000430760800034
PublisherELSEVIER SCIENCE BV
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/55020
Collection中国科学院地理科学与资源研究所
Corresponding AuthorWu, Chaoyang
Affiliation1.Chinese Acad Sci, Inst Remote Sensing & Digital Earth, State Key Lab Remote Sensing Sci, Beijing 100101, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China
4.Ludong Univ, Sch Resources & Environm Engn, Yantai 264025, Peoples R China
5.Nanjing Univ, Int Inst Earth Syst Sci, Nanjing 210023, Jiangsu, Peoples R China
6.Columbia Univ, Dept Earth & Environm Engn, 500 W 120th St, New York, NY 10027 USA
Recommended Citation
GB/T 7714
Wang, Jian,Wu, Chaoyang,Zhang, Chunhua,et al. Improved modeling of gross primary productivity (GPP) by better representation of plant phenological indicators from remote sensing using a process model[J]. ECOLOGICAL INDICATORS,2018,88:332-340.
APA Wang, Jian.,Wu, Chaoyang.,Zhang, Chunhua.,Ju, Weimin.,Wang, Xiaoyue.,...&Fang, Bin.(2018).Improved modeling of gross primary productivity (GPP) by better representation of plant phenological indicators from remote sensing using a process model.ECOLOGICAL INDICATORS,88,332-340.
MLA Wang, Jian,et al."Improved modeling of gross primary productivity (GPP) by better representation of plant phenological indicators from remote sensing using a process model".ECOLOGICAL INDICATORS 88(2018):332-340.
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