IGSNRR OpenIR
Solar energy dominates and soil water modulates net ecosystem productivity and evapotranspiration across multiple timescales in a subtropical coniferous plantation
Tang, Yakun1; Jia, Chang1; Wang, Lina1; Wen, Xuefa2; Wang, Huimin2
2021-04-15
Source PublicationAGRICULTURAL AND FOREST METEOROLOGY
ISSN0168-1923
Volume300Pages:12
Corresponding AuthorWen, Xuefa(wenxf@igsnrr.ac.cn)
AbstractThe timescale dependence of environmental factors' influence on net ecosystem productivity (NEP), evapotranspiration (ET), and the effect of high and cool air temperature (Ta) across multiple timescales need to be quantified to identify the response mechanisms of forest ecosystems. We analyzed NEP and ET over 11 years in a subtropical coniferous plantation, and wavelet analysis was used to determine spectrum characteristics of these fluxes and quantify the time lag between these fluxes and environmental factors from daily to annual timescales. The NEP and ET had significant daily and annual spectrum variabilities, but ET exhibited a broader significant spectrum than NEP from days to months timescales. At daily and annual timescales, NEP was significantly synchronized with, and preceded photosynthetically active radiation (PAR) and Ta by 1. 12 +/- 0.6 h and 23.16 +/- 17 days, respectively. Meanwhile, ET was significantly synchronized with net radiation (Rn) at both daily and annual timescales, lagging Rn by 1.15 +/- 1.4 h, but preceding it by 5.73 +/- 4.39 days, respectively. From days to months timescales, with no continuous significant effect, NEP preceded PAR and vapor pressure deficit (VPD), and lagged soil water content (SW); however, ET only preceded Rn and VPD. In addition, summer high-Ta enhanced the effect of SW on NEP and ET across multiple timescales. Early spring cool-Ta shortened the time lag between PAR and NEP at daily and annual timescales, but only shortened it between Ta and ET at a daily timescale. This study demonstrated the more modulating effect of SW on the dominant influence of solar energy on NEP than ET, with timescale increased. This study also indicated that NEP and ET were more sensitive to high-than cool-Ta, and the time lag effects of these Ta events should be considered separately to adequately acknowledge the response mechanisms of these fluxes.
KeywordConiferous plantation Eddy covariance ET NEP Wavelet analysis
DOI10.1016/j.agrformet.2020.108310
Indexed BySCI
Language英语
Funding ProjectNational Key Research and Development Program of China[2017YFC0503904] ; National Key Research and Development Program of China[2016YFC0500205] ; National Natural Science Foundation of China[41977425]
Funding OrganizationNational Key Research and Development Program of China ; National Natural Science Foundation of China
WOS Research AreaAgriculture ; Forestry ; Meteorology & Atmospheric Sciences
WOS SubjectAgronomy ; Forestry ; Meteorology & Atmospheric Sciences
WOS IDWOS:000635674500002
PublisherELSEVIER
Citation statistics
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/161961
Collection中国科学院地理科学与资源研究所
Corresponding AuthorWen, Xuefa
Affiliation1.Northwest A&F Univ, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China
2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China
Recommended Citation
GB/T 7714
Tang, Yakun,Jia, Chang,Wang, Lina,et al. Solar energy dominates and soil water modulates net ecosystem productivity and evapotranspiration across multiple timescales in a subtropical coniferous plantation[J]. AGRICULTURAL AND FOREST METEOROLOGY,2021,300:12.
APA Tang, Yakun,Jia, Chang,Wang, Lina,Wen, Xuefa,&Wang, Huimin.(2021).Solar energy dominates and soil water modulates net ecosystem productivity and evapotranspiration across multiple timescales in a subtropical coniferous plantation.AGRICULTURAL AND FOREST METEOROLOGY,300,12.
MLA Tang, Yakun,et al."Solar energy dominates and soil water modulates net ecosystem productivity and evapotranspiration across multiple timescales in a subtropical coniferous plantation".AGRICULTURAL AND FOREST METEOROLOGY 300(2021):12.
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
[Tang, Yakun]'s Articles
[Jia, Chang]'s Articles
[Wang, Lina]'s Articles
Baidu academic
Similar articles in Baidu academic
[Tang, Yakun]'s Articles
[Jia, Chang]'s Articles
[Wang, Lina]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Tang, Yakun]'s Articles
[Jia, Chang]'s Articles
[Wang, Lina]'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.