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

Yuli Liu | Zendy; Guomo Zhou | Zendy; Huaqiang Du | Zendy; Frank Berninger | Zendy; Fangjie Mao | Zendy; Xuejian Li | Zendy; Liang Chen | Zendy; Lu Cui | Zendy; Yangguang Li | Zendy; Di’en Zhu | Zendy

Open Access

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

Author(s) -

Yuli Liu,

Guomo Zhou,

Huaqiang Du,

Frank Berninger,

Fangjie Mao,

Xuejian Li,

Liang Chen,

Lu Cui,

Yangguang Li,

Di’en Zhu

Publication year - 2018

Publication title -

peerj

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.927

H-Index - 70

ISSN - 2167-8359

DOI - 10.7717/peerj.5747

Subject(s) - bamboo , environmental science , soil respiration , abiotic component , water content , ecosystem , biotic component , productivity , soil water , respiration , soil carbon , primary production , agronomy , ecology , soil science , biology , botany , geology , geotechnical engineering , macroeconomics , economics

Moso bamboo has large potential to alleviate global warming through carbon sequestration. Since soil respiration ( R s ) is a major source of CO 2 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 CO 2 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 .

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