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Organic-substitute strategies reduced carbon and reactive nitrogen footprints and gained net ecosystem economic benefit for intensive vegetable production

文献类型： 外文期刊

作者： Zhou, Jun 1 ; Li, Bo 1 ; Xia, Longlong 3 ; Fan, Changhua 1 ; Xiong, Zhengqin 1 ;

作者机构： 1.Nanjing Agr Univ, Coll Resources & Environm Sci, Jiangsu Key Lab Low Carbon Agr & GHGs Mitigat, Nanjing 210095, Jiangsu, Peoples R China

2.South China Agr Univ, Coll Nat Resources & Environm, Guangzhou 510642, Guangdong, Peoples R China

3.Chinese Acad Sci, Inst Soil Sci, State Key Lab Soil & Sustainable Agr, Nanjing 210008, Peoples R China

4.Karlsruhe Inst Technol, Inst Meteorol & Climate Res IMK IFU, Kreuzeckbahnstr 19, D-82467 Garmisch Partenkirchen, Germany

5.Chinese Acad Trop Agr Sci, Environm & Plant Protect Inst, Haikou 571101, Hainan, Peoples R China

关键词： Life-cycle assessment; C footprint; Nr footprint; Intensive vegetable production; Net ecosystem economic benefit

期刊名称：JOURNAL OF CLEANER PRODUCTION （ 影响因子：9.297； 五年影响因子：9.444 ）

ISSN： 0959-6526

年卷期： 2019 年 225 卷

页码：

收录情况： SCI

摘要： Partially substituting inorganic fertilizer with organic fertilizer is widely adopted to improve intensive vegetable production as well as potentially reduce carbon (C) and reactive nitrogen (Nr) footprints, but the associated comprehensive evaluations with life-cycle assessment (LCA) from environmental and economic perspectives have rarely been executed. Covering one-year consecutive vegetable crops rotation, five fertilization strategies were established at an equal N level (SN: single inorganic fertilization; SM: single organic fertilization: mixing organic and inorganic N fertilizer at the ratio of 1:2 (M1N2), 1:1 (M1N1) and 2:1 (M2N1)) and a CK as control. Compared with the SN strategy, the M1N2, M1N1 and M2N1 strategies significantly decreased N2O emission (32.2-50.0%), NO emission (41.8-52.5%), NH3 volatilization (17.8-22.2%), N runoff (29.7-35.3%) and N leaching (34.2-44.8%) as well as significantly increased vegetable yield (4.3-7.4%) and annual SOC sequestration (244.5-463.1 kg C ha(-1) yr(-1)). Consequently, the three organic-substitute strategies significantly reduced C footprint (17.0-21.8%) and the field interface Nr footprint (34.1-43.0%). The production of both organic and inorganic N fertilizer (31.1-51.5%) and N2O emissions (19.9-35.1%) were the hotspots of GHG emissions. The production of organic fertilizer dominated their foreground interface Nr footprint (86.6-97.9%) and environmental damage costs (EDC, 48.6-71.0%), while N leaching dominated the field interface Nr footprint (45.1-50.0%). Therefore, the substitute strategies improved the net ecosystem economic benefits (NEEB, which integrated net economic benefit and EDC) by CNY 2,799-12,151 ha(-1) yr(-1) and the M2N1 and M1N1 strategies produced better NEEB, highlighting that appropriate substitute fertilization strategies are recommended for simultaneously environmental and economic benefits in intensive vegetable production in China. (C) 2019 Published by Elsevier Ltd.

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