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dc.contributorHan, Juanen_US
dc.contributorWen, Xiaoxiaen_US
dc.contributorWang, Xiu‐Kangen_US
dc.contributorLi, Pu‐Fangen_US
dc.contributorNangia, Vinayen_US
dc.contributorJia, Zhi‐Kuanen_US
dc.contributorXiong, You‐Caien_US
dc.contributorLiao, Yunchengen_US
dc.creatorMo, Feien_US
dc.identifier.citationFei Mo, Juan Han, Xiaoxia Wen, Xiu‐Kang Wang, Pu‐Fang Li, Vinay Nangia, Zhi‐Kuan Jia, You‐Cai Xiong, Yuncheng Liao. (9/1/2020). Quantifying regional effects of plastic mulch on soil nitrogen pools, cycles, and fluxes in rain‐fed agroecosystems of the Loess Plateau. Land Degradation and Development, 31 (13), pp. 1675-1687.en_US
dc.description.abstractFarmland surface soil mulching with plastic film is extensively used to enhance agricultural productivity in the Loess Plateau (LP). However, the effect of mulching on the key processes that dominate soil nitrogen dynamics is rarely assessed quantitatively. We quantified the responses of agroecosystem nitrogen cycling to plastic mulching using a comprehensive database drawn from mulching experiments in the LP. Our results indicated that through increasing the soil mineral and dissolved organic nitrogen concentrations, plastic mulching significantly enhanced the soil nitrogen availability by 36.6% at the regional scale, compared with traditional nonmulching. Mulching pattern, nitrogen application, and soil type were found to be the most significant drivers in determining nitrogen availability. Furthermore, nitrogen gaseous releases and hydrological leaching were significantly reduced by 7.0% and 9.4%, respectively, under plastic mulching, which led to an insignificant change in the soil total nitrogen pool. Nitrogen input level and soil organic carbon appeared to be the most important factors influencing soil nitrogen losses. Critically, along with increased root residue inputs to soil and improved water thermal conditions under mulching, soil microbial activity was increased significantly. This was indicated by enhanced microbial biomass nitrogen and soil nitrogen‐related extracellular enzyme activity and was driven by nitrogen input, mulching duration, and soil carbon status. We generalize that in the rain‐fed agroecosystems of the LP, plastic mulch will have little impact on nitrogen pool size, largely due to reduced gaseous and hydrological nitrogen losses and increased crop‐sourced nitrogen inputs, but will strongly stimulate microbial growth, metabolism, and activities, which consequently will speed up biogeochemical cycles of soil nutrients.en_US
dc.publisherJohn Wiley & Sonsen_US
dc.sourceLand Degradation and Development;31,(2020) Pagination 1675-1687en_US
dc.subjectloess plateauen_US
dc.subjectplastic mulchen_US
dc.subjectsoil nitrogen poolen_US
dc.titleQuantifying regional effects of plastic mulch on soil nitrogen pools, cycles, and fluxes in rain‐fed agroecosystems of the Loess Plateauen_US
dc.typeJournal Articleen_US
cg.creator.idNangia, Vinay: 0000-0001-5148-8614en_US
cg.contributor.centerInternational Center for Agricultural Research in the Dry Areas - ICARDAen_US
cg.contributor.centerLanzhou Universityen_US
cg.contributor.centerNorthwest A&F University - NWSUAFen_US
cg.contributor.centerNorthwest A&F University, College of Agronomy - NWSUAF - CoAen_US
cg.contributor.centerNorthwest A&F University, Institute of soil and water conservation - NWSUAF - IoSWCen_US
cg.contributor.centerShanxi Agricultural University, College of Agriculture - SXAU - CoAen_US
cg.contributor.centerYan'an University, College of Life Sciences - YANAN - CoLSen_US
cg.contributor.crpCGIAR Research Program on Climate Change, Agriculture and Food Security - CCAFSen_US
cg.contributor.funderGovernment of Chinaen_US
cg.contributor.projectChina Bilateral Program 2020 -2021-2022 Implementation Fundingen_US
cg.contributor.project-lead-instituteInternational Center for Agricultural Research in the Dry Areas - ICARDAen_US
cg.coverage.regionEastern Asiaen_US
cg.isijournalISI Journalen_US
dc.identifier.statusTimeless limited accessen_US
cg.journalLand Degradation and Developmenten_US

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