Methane uptake in forest soils along an urban-to-rural gradient in Pearl River Delta, South China

Wei Zhang; Keya Wang; Yiqi Luo; Yunting Fang; Junhua Yan; Tao Zhang; Xiaomin Zhu; Hao Chen; Wantong Wang; Jiangming Mo

doi:10.1038/srep05120

Methane uptake in forest soils along an urban-to-rural gradient in Pearl River Delta, South China

Wei Zhang, Keya Wang, Yiqi Luo, Yunting Fang, Junhua Yan, Tao Zhang, Xiaomin Zhu, Hao Chen, Wantong Wang, Jiangming Mo

Research output: Contribution to journal › Article › peer-review

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Abstract

We investigated soil CH₄ fluxes from six forests along an urban-to-rural gradient in Guangzhou City metropolitan area, South China. The most significant CH₄ consumption was found in the rural site, followed by suburban, and then urban forest sites. The rates of CH₄ uptake were significantly higher (by 38% and 44%, respectively for mixed forest and broadleaf forest) in the rural than in the urban forest site. The results indicate that soil water filled pore space (WFPS) is the primary factor for controlling CH₄ consumption in subtropical forests. The reductions of soil CH₄ uptake in urban forests were also influenced by the higher rates of atmospheric nitrogen (N) deposition and increases in soil nitrate (NO₃ ^-) and aluminum (Al³⁺) contents as a result of urbanization. Results from this work suggest that environmental changes associated with urbanization could decrease soil CH₄ consumption in subtropical forests and potentially contribute to increase of atmospheric CH₄ concentration.

Original language	English (US)
Article number	5120
Journal	Scientific Reports
Volume	4
DOIs	https://doi.org/10.1038/srep05120
State	Published - May 30 2014
Externally published	Yes

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@article{9015fd7b512b40068978c04540879107,

title = "Methane uptake in forest soils along an urban-to-rural gradient in Pearl River Delta, South China",

abstract = "We investigated soil CH4 fluxes from six forests along an urban-to-rural gradient in Guangzhou City metropolitan area, South China. The most significant CH4 consumption was found in the rural site, followed by suburban, and then urban forest sites. The rates of CH4 uptake were significantly higher (by 38% and 44%, respectively for mixed forest and broadleaf forest) in the rural than in the urban forest site. The results indicate that soil water filled pore space (WFPS) is the primary factor for controlling CH4 consumption in subtropical forests. The reductions of soil CH4 uptake in urban forests were also influenced by the higher rates of atmospheric nitrogen (N) deposition and increases in soil nitrate (NO3 -) and aluminum (Al3+) contents as a result of urbanization. Results from this work suggest that environmental changes associated with urbanization could decrease soil CH4 consumption in subtropical forests and potentially contribute to increase of atmospheric CH4 concentration.",

author = "Wei Zhang and Keya Wang and Yiqi Luo and Yunting Fang and Junhua Yan and Tao Zhang and Xiaomin Zhu and Hao Chen and Wantong Wang and Jiangming Mo",

note = "Funding Information: This study was supported by the National Science Foundation of China (Nos. 31000236, 41273143 and 31370011) and the Natural Science Foundation of Guangdong Province, China (9451065005004064). We wish to acknowledge Thaddaeus Gommesen, Nate Mikle and Rashad Rafique for their constructive comments that improved the quality of the manuscript.",

year = "2014",

month = may,

day = "30",

doi = "10.1038/srep05120",

language = "English (US)",

volume = "4",

journal = "Scientific Reports",

issn = "2045-2322",

publisher = "Nature Publishing Group",

}

TY - JOUR

T1 - Methane uptake in forest soils along an urban-to-rural gradient in Pearl River Delta, South China

AU - Zhang, Wei

AU - Wang, Keya

AU - Luo, Yiqi

AU - Fang, Yunting

AU - Yan, Junhua

AU - Zhang, Tao

AU - Zhu, Xiaomin

AU - Chen, Hao

AU - Wang, Wantong

AU - Mo, Jiangming

N1 - Funding Information: This study was supported by the National Science Foundation of China (Nos. 31000236, 41273143 and 31370011) and the Natural Science Foundation of Guangdong Province, China (9451065005004064). We wish to acknowledge Thaddaeus Gommesen, Nate Mikle and Rashad Rafique for their constructive comments that improved the quality of the manuscript.

PY - 2014/5/30

Y1 - 2014/5/30

N2 - We investigated soil CH4 fluxes from six forests along an urban-to-rural gradient in Guangzhou City metropolitan area, South China. The most significant CH4 consumption was found in the rural site, followed by suburban, and then urban forest sites. The rates of CH4 uptake were significantly higher (by 38% and 44%, respectively for mixed forest and broadleaf forest) in the rural than in the urban forest site. The results indicate that soil water filled pore space (WFPS) is the primary factor for controlling CH4 consumption in subtropical forests. The reductions of soil CH4 uptake in urban forests were also influenced by the higher rates of atmospheric nitrogen (N) deposition and increases in soil nitrate (NO3 -) and aluminum (Al3+) contents as a result of urbanization. Results from this work suggest that environmental changes associated with urbanization could decrease soil CH4 consumption in subtropical forests and potentially contribute to increase of atmospheric CH4 concentration.

AB - We investigated soil CH4 fluxes from six forests along an urban-to-rural gradient in Guangzhou City metropolitan area, South China. The most significant CH4 consumption was found in the rural site, followed by suburban, and then urban forest sites. The rates of CH4 uptake were significantly higher (by 38% and 44%, respectively for mixed forest and broadleaf forest) in the rural than in the urban forest site. The results indicate that soil water filled pore space (WFPS) is the primary factor for controlling CH4 consumption in subtropical forests. The reductions of soil CH4 uptake in urban forests were also influenced by the higher rates of atmospheric nitrogen (N) deposition and increases in soil nitrate (NO3 -) and aluminum (Al3+) contents as a result of urbanization. Results from this work suggest that environmental changes associated with urbanization could decrease soil CH4 consumption in subtropical forests and potentially contribute to increase of atmospheric CH4 concentration.

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Methane uptake in forest soils along an urban-to-rural gradient in Pearl River Delta, South China

Abstract

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