Dataset Information

Responses of CH₄ and N₂O fluxes to land-use conversion and fertilization in a typical red soil region of southern China.

ABSTRACT: Land-use conversion and fertilization have been widely reported as important management practices affecting CH₄ and N₂O fluxes; however, few long-term in situ measurements are available after land-use conversion from rice paddies to upland cultivation, especially those including the initial stages after conversion. A 3-year field experiment was conducted in rice paddies and a newly converted citrus orchard to measure CH₄ and N₂O fluxes in response to land-use conversion and fertilization in a red soil region of southern China. Annual CH₄ and N₂O emissions averaged 303.9?kg?C ha^-1 and 3.8?kg?N ha^-1, respectively, for the rice paddies over three cultivation years. Although annual N₂O emissions increased two- to threefold after the conversion of rice paddies to citrus orchard, the substantial reduction in CH₄ emissions and even shift into a sink for atmospheric CH₄ led to significantly lower CO₂-eq emissions of CH₄ and N₂O in the citrus orchard compared to the rice paddies. Moreover, distinct CH₄ emissions were observed during the initial stages and sustained for several weeks after conversion. Our results indicated that the conversion of rice paddies to citrus orchards in this region for higher economic benefits may also lead to lower aggregate CH₄ and N₂O emissions.

SUBMITTER: Wu X

PROVIDER: S-EPMC5585344 | biostudies-literature | 2017 Sep

REPOSITORIES: biostudies-literature

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Publications

Responses of CH4 and N2O fluxes to land-use conversion and fertilization in a typical red soil region of southern China.

Wu Xing X Liu Huifeng H Zheng Xunhua X Lu Fei F Wang Shuai S Li Zongshan Z Liu Guohua G Fu Bojie B

Scientific reports 20170905 1

Land-use conversion and fertilization have been widely reported as important management practices affecting CH4 and N2O fluxes; however, few long-term in situ measurements are available after land-use conversion from rice paddies to upland cultivation, especially those including the initial stages after conversion. A 3-year field experiment was conducted in rice paddies and a newly converted citrus orchard to measure CH4 and N2O fluxes in response to l ...[more]

PMID: 28874714

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Dataset Information

Responses of CH₄ and N₂O fluxes to land-use conversion and fertilization in a typical red soil region of southern China.

Publications

Responses of CH<sub>4</sub> and N<sub>2</sub>O fluxes to land-use conversion and fertilization in a typical red soil region of southern China.

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