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


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 .

SUBMITTER: Liu Y 

PROVIDER: S-EPMC6215440 | biostudies-literature | 2018

REPOSITORIES: biostudies-literature

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

Liu Yuli Y   Zhou Guomo G   Du Huaqiang H   Berninger Frank F   Mao Fangjie F   Li Xuejian X   Chen Liang L   Cui Lu L   Li Yangguang Y   Zhu Di'en D  

PeerJ 20181031


Moso bamboo has large potential to alleviate global warming through carbon sequestration. Since soil respiration (<i>R</i> <sub><i>s</i></sub> ) is a major source of CO<sub>2</sub> emissions, we analyzed the dynamics of soil respiration (<i>R</i> <sub><i>s</i></sub> ) and its relation to environmental factors in a Moso bamboo (<i>Phllostachys heterocycla cv. pubescens</i>) forest to identify the relative importance of biotic and abiotic drivers of respiration. Annual average <i>R</i> <sub><i>s</  ...[more]

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