Soil respiration of a Moso bamboo forest significantly affected by gross ecosystem productivity and leaf area index in an extreme drought event

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Liu , Y , Zhou , G , Du , H , Berninger , F , Mao , F , Li , X , Chen , L , Cui , L , Li , Y & Zhu , D 2018 , ' Soil respiration of a Moso bamboo forest significantly affected by gross ecosystem productivity and leaf area index in an extreme drought event ' , PeerJ , vol. 6 , 5747 . https://doi.org/10.7717/peerj.5747

Title: Soil respiration of a Moso bamboo forest significantly affected by gross ecosystem productivity and leaf area index in an extreme drought event
Author: Liu, Yuli; Zhou, Guomo; Du, Huaqiang; Berninger, Frank; Mao, Fangjie; Li, Xuejian; Chen, Liang; Cui, Lu; Li, Yangguang; Zhu, Di'en
Contributor: University of Helsinki, Forest Ecology and Management
Date: 2018-10-31
Language: eng
Number of pages: 21
Belongs to series: PeerJ
ISSN: 2167-8359
URI: http://hdl.handle.net/10138/299563
Abstract: Moso bamboo has large potential to alleviate global warming through carbon sequestration. Since soil respiration (R-s) is a major source of CO2 emissions, we analyzed the dynamics of soil respiration (R-s) and its relation to environmental factors in a Moso bamboo (Phllostachys heterocycla cv. pubescens) forest to identify the relative importance of biotic and abiotic drivers of respiration. Annual average R(s )was 44.07 t CO2 ha(-1) a(-1) R-s correlated significantly with soil temperature (P <0.01), which explained 69.7% of the variation in R-s at a diurnal scale. Soil moisture was correlated significantly with R-s on a daily scale except not during winter, indicating it affected R-s. A model including both soil temperature and soil moisture explained 93.6% of seasonal variations in R-s. The relationship between R-s and soil temperature during a day showed a clear hysteresis. R-s was significantly and positively (P <0.01) related to gross ecosystem productivity and leaf area index, demonstrating the significance of biotic factors as crucial drivers of R-s.
Subject: Moso bamboo forest
Environmental determiners
Soil respiration
Leaf area index
Gross ecosystem productivity
SUBTROPICAL CHINA
TEMPERATURE SENSITIVITY
CO2 EFFLUX
TEMPORAL RESOLUTION
ORGANIC-MATTER
CARBON-CYCLE
MODEL
NITROGEN
VARIABILITY
DYNAMICS
1172 Environmental sciences
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