Inter-comparison of three models for delta C-13 of respiration with four regression approaches
Chen, CH; Pang, JP; Wei, J; Wen, XF; Sun, XM
2017
Source PublicationAGRICULTURAL AND FOREST METEOROLOGY
ISSN0168-1923
Volume247Pages:229-239
AbstractThe carbon isotopic composition of ecosystem carbon pools and fluxes is a useful tracer in the carbon cycle. In this study, the carbon dioxide mixing ratio ([CO2]) and its delta C-13 were measured in-situ by wavelength-scanned cavity ring-down spectrometry in a subtropical coniferous plantation. We determined delta C-13 of respiration in the understory (delta(Rs)) using three models (i.e., Keeling plots (KP), Miller-Tans plots (MT), and flux ratio method (FR)) with four regressions (i.e., ordinary least squares (OLS), geometric mean regression (GMR), least-squares bisector regression (LSB), and orthogonal distance regression (ODR)). The selection of regression approaches affected KP and MT rather than FR. No significant differences were observed among the three models using OLS (p > 0.05). The systematic bias and uncertainty of SRS would increase with the decrease of the [CO2] ranges (KP and MT) and the d(13)CO(2)/dz gradients (FR). The bias of delta(Rs) among the four regression approaches could be explained by the Pearson's correlation coefficient of linear fit at small [CO2] ranges and low d(13)CO(2)/dz gradients. The uncertainty of SRS was primarily related to the delta C-13 measurement error based on a Gaussian noise simulation, and OLS was less sensitive to the delta C-13 measurement error. A threshold criterion for the [CO2] ranges or the d(13)CO(2)/dz gradients should be established to remove the ER, values with relatively large errors and improve the overall reliability of estimating delta(Rs).
SubtypeJournal
KeywordKeeling plot Miller-Tans plot Flux ratio Regression Respiration
Subject AreaAgriculture ; Forestry ; Meteorology & Atmospheric Sciences
WOS Subject ExtendedAgronomy ; Forestry ; Meteorology & Atmospheric Sciences
WOS KeywordCARBON-ISOTOPE COMPOSITION ; SUB-ALPINE FOREST ; ATMOSPHERIC (CO2)-C-13/(CO2)-C-12 MEASUREMENT ; LASER ABSORPTION-SPECTROSCOPY ; EDDY COVARIANCE MEASUREMENTS ; TEMPERATE DECIDUOUS FOREST ; ECOSYSTEM-RESPIRED CO2 ; SOIL RESPIRATION ; STABLE-ISOTOPES ; CYCLE RESEARCH
Indexed BySCI
Language英语
WOS IDWOS:000416186700021
PublisherELSEVIER SCIENCE BV
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/43961
Collection生态系统网络观测与模拟院重点实验室_生态网络实验室
Recommended Citation
GB/T 7714
Chen, CH,Pang, JP,Wei, J,et al. Inter-comparison of three models for delta C-13 of respiration with four regression approaches[J]. AGRICULTURAL AND FOREST METEOROLOGY,2017,247:229-239.
APA Chen, CH,Pang, JP,Wei, J,Wen, XF,&Sun, XM.(2017).Inter-comparison of three models for delta C-13 of respiration with four regression approaches.AGRICULTURAL AND FOREST METEOROLOGY,247,229-239.
MLA Chen, CH,et al."Inter-comparison of three models for delta C-13 of respiration with four regression approaches".AGRICULTURAL AND FOREST METEOROLOGY 247(2017):229-239.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Chen, CH]'s Articles
[Pang, JP]'s Articles
[Wei, J]'s Articles
Baidu academic
Similar articles in Baidu academic
[Chen, CH]'s Articles
[Pang, JP]'s Articles
[Wei, J]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Chen, CH]'s Articles
[Pang, JP]'s Articles
[Wei, J]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.