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On the ratio of intercellular to ambient CO2 (c(i)/c(a)) derived from ecosystem flux
Tan, Zheng-Hong; Wu, Zhi-Xiang; Hughes, Alice C.; Schaefer, Douglas; Zeng, Jiye; Lan, Guo-Yu; Yang, Chuang; Tao, Zhong-Liang; Chen, Bang-Qian; Tian, Yao-Hua; Song, Liang; Jatoi, Muhammad Tahir; Zhao, Jun-Fu; Yang, Lian-Yan
2017
Source PublicationINTERNATIONAL JOURNAL OF BIOMETEOROLOGY
Volume61Issue:12Pages:2059-2071
AbstractThe ratio of intercellular to ambient CO2 concentrations (c(i)/c(a)) plays a key role in ecophysiology, micromete-orology, and global climatic change. However, systematic investigation on c(i)/c(a) variation and its determinants are rare. Here, the c(i)/c(a) was derived from measuring ecosystem fluxes in an even-aged monoculture of rubber trees (Hevea brasiliensis). We tested whether c(i)/c(a) is constant across environmental gradients and if not, which dominant factors control c(i)/c(a) variations. Evidence indicates that c(i)/c(a) is not a constant. The c(i)/c(a) exhibits a clear "V"-shaped diurnal pattern and varies across the environmental gradient. Water vapor pressure deficit (D) is the dominant factor controls over the c(i)/c(a) variations. c(i)/c(a) consistently decreases with increasing D. c(i)/c(a) decreases with square root of D as predicted by the optimal stomatal model. The D-driving single-variable model could simulate c(i)/c(a) as well as that of sophisticated model. Many variables function on longer timescales than a daily cycle, such as soil water content, could improve c(i)/c(a) model prediction ability. Ecosystem flux can be effectively used to calculate c(i)/c(a) and use it to better understand various natural cycles.
Department其他
KeywordCanopy Conductance Photosynthesis Eddy Covariance Water Vapor Deficit Ecosystem Model
Language英语
Document Type期刊论文
Identifierhttp://ir.xtbg.org.cn/handle/353005/10725
Collection其他
恢复生态学组
Recommended Citation
GB/T 7714
Tan, Zheng-Hong,Wu, Zhi-Xiang,Hughes, Alice C.,et al. On the ratio of intercellular to ambient CO2 (c(i)/c(a)) derived from ecosystem flux[J]. INTERNATIONAL JOURNAL OF BIOMETEOROLOGY,2017,61(12):2059-2071.
APA Tan, Zheng-Hong.,Wu, Zhi-Xiang.,Hughes, Alice C..,Schaefer, Douglas.,Zeng, Jiye.,...&Yang, Lian-Yan.(2017).On the ratio of intercellular to ambient CO2 (c(i)/c(a)) derived from ecosystem flux.INTERNATIONAL JOURNAL OF BIOMETEOROLOGY,61(12),2059-2071.
MLA Tan, Zheng-Hong,et al."On the ratio of intercellular to ambient CO2 (c(i)/c(a)) derived from ecosystem flux".INTERNATIONAL JOURNAL OF BIOMETEOROLOGY 61.12(2017):2059-2071.
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