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Open AccessArticle

Temperature Sensitivity in Individual Components of Ecosystem Respiration Increases along the Vertical Gradient of Leaf–Stem–Soil in Three Subtropical Forests

1
College of Geography and Environmental Sciences, Zhejiang Normal University, Jinhua 321004, China
2
State Key Laboratory of Resources and Environmental Information System, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China
3
Key Laboratory of Forest Ecology and Management, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China
4
Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China
5
Jiangxi Province Key Laboratory of Watershed Ecosystem Change and Biodiversity, Center for Watershed Ecology, Institute of Life Science and School of Life Science, Nanchang University, Nanchang 330031, China
6
State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China
7
College of Environment and Planning, Henan University, Kaifeng 475004, China
*
Authors to whom correspondence should be addressed.
Forests 2020, 11(2), 140; https://doi.org/10.3390/f11020140
Received: 7 December 2019 / Revised: 17 January 2020 / Accepted: 22 January 2020 / Published: 25 January 2020
(This article belongs to the Section Forest Ecology and Management)
Temperature sensitivity (Q10) of ecosystem respiration (ER) is a crucial parameter for predicting the fate of CO2 in terrestrial e cosystems under global warming. Most studies focus their attention in the variation of Q10 in one or two components of ER, but not in the integration or comparison among Q10 in major components of ER. Vertical and seasonal variations in individual components, including leaf respiration, stem respiration and soil respiration, of ER were observed synchronously along the gradient of leaf–stem–soil over a 2 year period in three forest stands dominated by masson pine, loblolly pine and oak, respectively, in a subtropical forest ecosystem of central China. We found that Q10 in individual components of ER increased along the vertical gradient of leaf–stem–soil. The vertical pattern of Q10 in individual components of ER was ascribed to variations of diurnal temperature range (DTR) and activation energy (ΔHa). These results suggest that a vertical pattern of Q10 in individual components of ER along the gradient of leaf–stem–soil should be taken into consideration in process-based models that simulate respiratory carbon flux in terrestrial ecosystems. View Full-Text
Keywords: climate change; leaf respiration; Q10; soil respiration; stem respiration; temperature acclimation climate change; leaf respiration; Q10; soil respiration; stem respiration; temperature acclimation
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MDPI and ACS Style

Chi, Y.; Yang, Q.; Zhou, L.; Shen, R.; Zheng, S.; Zhang, Z.; Zhang, Z.; Xu, M.; Wu, C.; Lin, X.; Jin, J. Temperature Sensitivity in Individual Components of Ecosystem Respiration Increases along the Vertical Gradient of Leaf–Stem–Soil in Three Subtropical Forests. Forests 2020, 11, 140. https://doi.org/10.3390/f11020140

AMA Style

Chi Y, Yang Q, Zhou L, Shen R, Zheng S, Zhang Z, Zhang Z, Xu M, Wu C, Lin X, Jin J. Temperature Sensitivity in Individual Components of Ecosystem Respiration Increases along the Vertical Gradient of Leaf–Stem–Soil in Three Subtropical Forests. Forests. 2020; 11(2):140. https://doi.org/10.3390/f11020140

Chicago/Turabian Style

Chi, Yonggang; Yang, Qingpeng; Zhou, Lei; Shen, Ruichang; Zheng, Shuxia; Zhang, Zhaoyang; Zhang, Zhenzhen; Xu, Ming; Wu, Chaofan; Lin, Xingwen; Jin, Jia. 2020. "Temperature Sensitivity in Individual Components of Ecosystem Respiration Increases along the Vertical Gradient of Leaf–Stem–Soil in Three Subtropical Forests" Forests 11, no. 2: 140. https://doi.org/10.3390/f11020140

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