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N2O Emissions from an Apple Orchard in the Coastal Area of Bohai Bay, China

文献类型： 外文期刊

作者： Xie, Baohua 1 ; Yu, Junbao 1 ; Zheng, Xunhua 2 ; Qu, Fanzhu 1 ; Xu, Yu 3 ; Lin, Haitao 3 ;

作者机构： 1.Chinese Acad Sci, Shandong Prov Key Lab Coastal Zone Environm Proc, Yantai Inst Coastal Zone Res YIC, Key Lab Coastal Zone Environm Proc & Ecol Remedia, Yantai 264003, Shandong, Peoples R China

2.Chinese Acad Sci, Inst Atmospher Phys, State Key Lab Atmospher Boundary Layer Phys & Atm, Beijing 100029, Peoples R China

3.Shandong Acad Agr Sci, Agr Resources & Environm Inst, Jinan 250100, Peoples R China

期刊名称：SCIENTIFIC WORLD JOURNAL （ 影响因子：1.219； 五年影响因子：1.3 ）

ISSN： 1537-744X

年卷期： 2014 年

页码：

收录情况： SCI

摘要： Using static chambers and gas chromatography, nitrous oxide (N2O) fluxes from an apple orchard soil in the Bohai Bay region of China were measured from February 2010 to February 2011. In this study, two nitrogen (N) fertilizer treatments were designed-without (CK) or with (SN) synthetic N fertilizers (800 kg N ha(-1)). The annual cumulative N2O emissions from CK and SN were 34.6 +/- 3.0 (mean +/- standard error) and 44.3 +/- 6.0 kg N2O-N ha(-1), respectively. Such high emissions resulted from the intensive N fertilization in the experimental and previous years. The direct emission factor (EFd) of N2O induced by the applied synthetic N fertilizers was 1.2%. The EFd is within the range of previous studies carried out in other croplands, which suggests that it is reasonable to estimate regional N2O emissions from apple orchards using the EFd obtained in other croplands. In addition, significant positive correlations existed between N2O fluxes and soil temperatures or soil dissolved organic carbon contents.

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