IHB OpenIR
Spatiotemporal variations of CO2 fluxes in a Cynodon-dominated riparian zone of the Three Gorges Reservoir (TGR), China
Zhang, Wenli1,2; Chen, Jiquan3; Liu, Ju1; Chen, Fangqing1,2; Zhang, Quanfa4; Ouyang, Zutao3; Shao, Changliang3; Fan, Yi3; Xu, Wennian2
Corresponding AuthorZhang, Wenli(wendyibcas@163.com) ; Xu, Wennian(814194318@qq.com)
2018-12-01
Source PublicationJOURNAL OF PLANT ECOLOGY
ISSN1752-9921
Volume11Issue:6Pages:877-886
AbstractAims Riparian ecosystems play an important role in overall ecosystem function, including the global carbon cycle of terrestrial ecosystems, at both landscape and global scales. Yet few studies have reported in situ measurements of CO2 in riparian areas where flooding is a unique disturbance to carbon cycling. Methods At multiple locations across riparian zones (RZ) with different water submergences in Xiangxi Bay (XXB), we studied seasonal variations of CO2 exchange between this Cynodon-dominated community and the atmosphere for 2 years by using static chambers. Important Findings We found that the seasonal changes in CO2 fluxes were apparent and dependent on the biophysical environment. In the beginning of spring, low gross primary productivity (GPP) in lightly flooded zones (LFZ) resulted in a positive net ecosystem exchange (NEE), indicating a net CO2 source. With the increase in temperature, more species and vegetation abundance appeared, and the increased GPP turned the LFZ from a net CO2 source into a sink. This transition seemed predominantly controlled by the physiological growth of vegetation. The mean NEEs, REs and the light-use efficiency (alpha) of the vegetation at HFZ and MFZ were significantly higher than those at LFZ and UFZ. Yet the coefficients of variation (CV) of NEE and RE at MFZ and HFZ were lower than those at LFZ and UFZ. Submergence promoted the emission and uptake of CO2 to the atmosphere. Elongated submergence reduced the number of species and lowered the spatial variability of the RZ, further lowering the variation of the CO2 exchange.
KeywordCO2 exchange riparian submergence spatial variability Q(10) TGD
DOI10.1093/jpe/rtx054
Funding OrganizationNational Natural Science Foundation of China (NSFC) ; Natural Science Foundation of Hubei Province ; Provincial Department of Education Scientific research projects ; Key Laboratory of Aquatic Botany and Watershed Ecology at the Chinese Academy of Sciences ; Engineering Research Center of Eco-environment in Three Gorges Reservoir Region, Ministry of Education ; National Natural Science Foundation of China (NSFC) ; Natural Science Foundation of Hubei Province ; Provincial Department of Education Scientific research projects ; Key Laboratory of Aquatic Botany and Watershed Ecology at the Chinese Academy of Sciences ; Engineering Research Center of Eco-environment in Three Gorges Reservoir Region, Ministry of Education
Indexed BySCI ; SCI
Language英语
Funding ProjectNational Natural Science Foundation of China (NSFC)[30900196] ; National Natural Science Foundation of China (NSFC)[51278281] ; Natural Science Foundation of Hubei Province[2015CFC834] ; Provincial Department of Education Scientific research projects[Q20151209] ; Key Laboratory of Aquatic Botany and Watershed Ecology at the Chinese Academy of Sciences ; Engineering Research Center of Eco-environment in Three Gorges Reservoir Region, Ministry of Education[KF2016-03]
WOS Research AreaPlant Sciences ; Environmental Sciences & Ecology
WOS SubjectPlant Sciences ; Ecology
WOS IDWOS:000456053600008
WOS KeywordTEMPERATURE SENSITIVITY ; CARBON FLUXES ; RESPIRATION ; VARIABILITY ; SUBMERGENCE ; TOLERANCE ; DYNAMICS
PublisherOXFORD UNIV PRESS
Funding OrganizationNational Natural Science Foundation of China (NSFC) ; Natural Science Foundation of Hubei Province ; Provincial Department of Education Scientific research projects ; Key Laboratory of Aquatic Botany and Watershed Ecology at the Chinese Academy of Sciences ; Engineering Research Center of Eco-environment in Three Gorges Reservoir Region, Ministry of Education ; National Natural Science Foundation of China (NSFC) ; Natural Science Foundation of Hubei Province ; Provincial Department of Education Scientific research projects ; Key Laboratory of Aquatic Botany and Watershed Ecology at the Chinese Academy of Sciences ; Engineering Research Center of Eco-environment in Three Gorges Reservoir Region, Ministry of Education
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Document Type期刊论文
Identifierhttp://ir.ihb.ac.cn/handle/342005/28679
Corresponding AuthorZhang, Wenli; Xu, Wennian
Affiliation1.China Three Gorges Univ, Coll Biol & Pharmaceut Sci, 8 Daxue Rd, Yichang 443002, Hubei, Peoples R China
2.China Three Gorges Univ, Hubei Int Sci & Technol Cooperat Ctr Ecol Conserv, Yichang 443002, Peoples R China
3.Michigan State Univ, Ctr Global Change & Earth Observat Geog Environm, E Lansing, MI 48823 USA
4.Chinese Acad Sci, Wuhan Bot Garden, Key Lab Aquat Bot & Watershed Ecol, Wuhan 430074, Hubei, Peoples R China
Recommended Citation
GB/T 7714
Zhang, Wenli,Chen, Jiquan,Liu, Ju,et al. Spatiotemporal variations of CO2 fluxes in a Cynodon-dominated riparian zone of the Three Gorges Reservoir (TGR), China[J]. JOURNAL OF PLANT ECOLOGY,2018,11(6):877-886.
APA Zhang, Wenli.,Chen, Jiquan.,Liu, Ju.,Chen, Fangqing.,Zhang, Quanfa.,...&Xu, Wennian.(2018).Spatiotemporal variations of CO2 fluxes in a Cynodon-dominated riparian zone of the Three Gorges Reservoir (TGR), China.JOURNAL OF PLANT ECOLOGY,11(6),877-886.
MLA Zhang, Wenli,et al."Spatiotemporal variations of CO2 fluxes in a Cynodon-dominated riparian zone of the Three Gorges Reservoir (TGR), China".JOURNAL OF PLANT ECOLOGY 11.6(2018):877-886.
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