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题名: Multi-site assessment of the effects of plastic-film mulch on the soil organic carbon balance in semiarid areas of China
作者: Wang, YP; Li, XG; Fu, TT; Wang, L; Turner, NC; Siddique, KHM; Li, FM(李凤民)
收录类别: SCIE ; BIOSIS
出版日期: 2016-11-15
刊名: AGRICULTURAL AND FOREST METEOROLOGY
卷号: 228, 页码:42-51
出版者: ELSEVIER
出版地: AMSTERDAM
英文摘要: Plastic-film mulch is widely used to increase soil temperature and reduce water evaporation in vegetable production. In China, it is also extensively used for growing grain crops, especially in temperature and rainfall limited areas. However, it remains unclear whether the technology is sustainable in terms of maintenance of soil organic carbon (SOC) balance. We assessed the effects of plastic-film mulch on the SOC balance in maize (Zea mays L) production in a range of cold semiarid environments. We imposed four treatments: (i) no plastic-film mulch or straw incorporation, (ii) plastic-film mulch, (iii) straw incorporation in soil without mulch, and (v) straw incorporation plus mulch, in ridge-furrow prepared fields at five sites along a hydrothermal gradient for up to six years. Maize root biomass across sites increased by 23-38% in mulched plots associated with the increase in aboveground biomass, indicating an increased SOC input, compared to that in non-mulched plots. The plastic-film mulch increased SOC mineralization, indicated by the stimulated decomposition of buried maize straw, and a 4-5% reduction in the concentration of light-fraction SOC (<1.8 g cm(-3)), but the total SOC concentration and stock in the 0-0.15 m soil layer did not change relative to no mulch after six years of continuous cropping. Plastic-film mulch did not affect the total non-cellulosic sugar content; however, it significantly increased the contribution of microbial-synthesized sugars to the total non-cellulosic sugars, indicating an intensified microbial action on the SOC pool compared to no mulch. Straw incorporation increased the root biomass, light and total SOC concentrations and non-cellulosic sugars, and changed the non-cellulosic sugar composition. We conclude that the increase in soil temperature and moisture by use of plastic-film mulch enhances productivity, but importantly maintains the SOC level in temperature- and rainfall-limited semiarid regions by balancing the increased SOC mineralization with increased root-derived C input. (C) 2016 The Authors. Published by Elsevier B.V.
关键词: Maize ; Non-cellulosic carbohydrates ; Root biomass ; Soil carbon mineralization ; Soil organic carbon level ; Soil warming ; Zea mays
作者部门: [Wang, Yong Peng ; Li, Xiao Gang ; Fu, Taotao ; Wang, Lin ; Li, Feng-Min] Lanzhou Univ, Sch Life Sci, Inst Arid Agroecol, State Key Lab Grassland & Agroecosyst, 222 South Tianshui Rd, Lanzhou 730000, Peoples R China ; [Turner, Neil C. ; Siddique, Kadambot H. M.] Univ Western Australia, UWA Inst Agr, M082,LB 5005, Perth, WA 6001, Australia
通讯作者: Li, XG (reprint author), Lanzhou Univ, Sch Life Sci, Inst Arid Agroecol, State Key Lab Grassland & Agroecosyst, 222 South Tianshui Rd, Lanzhou 730000, Peoples R China.
学科分类: Agriculture; Forestry; Meteorology & Atmospheric Sciences
文章类型: Article
所属项目编号: State Technology Support Program [2011BAD29804] ; 111 Project of the State Ministry of Education [2007B051]
所属项目名称: 国家科技支撑计划 ; 高等学校学科创新引智计划(111计划)
项目资助者: MOST ; MOE ; SAFEA
语种: 英语
DOI: 10.1016/j.agrformet.2016.06.016
ISSN号: 0168-1923
WOS记录号: WOS:000383295200004
BIOSIS记录号: BCI:BCI201600778351
IR记录号: WOS:000383295200004
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内容类型: 期刊论文
URI标识: http://ir.lzu.edu.cn/handle/262010/182069
Appears in Collections:生命科学学院_期刊论文

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Recommended Citation:
Wang, YP,Li, XG,Fu, TT,et al. Multi-site assessment of the effects of plastic-film mulch on the soil organic carbon balance in semiarid areas of China[J]. AGRICULTURAL AND FOREST METEOROLOGY,2016,228:42-51.
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