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Carbon sequestration and Jerusalem artichoke biomass under nitrogen applications in coastal saline zone in the northern region of Jiangsu, China

文献类型: 外文期刊

作者: Li Niu 1 ; Chen Manxia 1 ; Gao Xiumei 1 ; Long Xiaohua 1 ; Shao Hongbo 2 ; Liu Zhaopu 1 ; Zed, Rengel 4 ;

作者机构: 1.Nanjing Agr Univ, Coll Resources & Environm Sci, Jiangsu Prov Key Lab Marine Biol, Nanjing 210095, Jiangsu, Peoples R China

2.Jiangsu Acad Agr Sci, Inst Agrobiotechnol, Nanjing 210014, Jiangsu, Peoples R China

3.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Yantai 264003, Peoples R China

4.Univ Western Australia, Soil Sci & Plant Nutr, Sch Earth & Environm, 35 Stirling Highway, Crawley, WA 6009, Australia

关键词: Jerusalem artichoke;Coastal saline zone;Carbon density;Carbon sequestration;Soil carbon storage

期刊名称:SCIENCE OF THE TOTAL ENVIRONMENT ( 影响因子:7.963; 五年影响因子:7.842 )

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年卷期:

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收录情况: SCI

摘要: Agriculture is an important source of greenhouse gases, but can also be a significant sink. Nitrogen fertilization is effective in increasing agricultural production and carbon storage. We explored the effects of different rates of nitrogen fertilization on biomass, carbon density, and carbon sequestration in fields under the cultivation of Jerusalem artichoke as well as in soil in a coastal saline zone for two years. Five nitrogen fertilization rates were tested (in g ure m(-2)): 4 (N1), 8 (N2), 12 (N3), 16 (N4), and 0 (control, CK). The biomass of different organs of Jerusalem artichoke during the growth cycle was significantly higher in N2 than the other treatments. Under different nitrogen treatments, carbon density in organs of Jerusalem artichoke ranged from 336 to 419 g C kg(-1). Carbon sequestration in Jerusalem artichoke was higher in treatments with nitrogen fertilization compared to the CK treatment. The highest carbon sequestration was found in the N2 treatment. Soil carbon content was higher in the 0-10 cm than 10-20 cm layer, with nitrogen fertilization increasing carbon content in both soil layers. The highest soil carbon sequestration was measured in the N2 treatment. Carbon sequestration in both soil and Jerusalem artichoke residue was increased by nitrogen fertilization depending on the rates in the coastal saline zone studied. (C) 2016 Elsevier B.V. All rights reserved.

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