气候变化领域集成服务门户(CCPortal): Integrative Crop-Soil-Management Modeling to Assess Global Phosphorus Losses from Major Crop Cultivations

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DOI	10.1029/2017GB005849
	Integrative Crop-Soil-Management Modeling to Assess Global Phosphorus Losses from Major Crop Cultivations
	Liu W.; Yang H.; Ciais P.; Stamm C.; Zhao X.; Williams J.R.; Abbaspour K.C.; Schulin R.
发表日期	2018
ISSN	0886-6236
EISSN	1944-9224
起始页码	1074
结束页码	1086
卷号	32 期号:7
英文摘要	Fertilization, crop uptake followed by plant harvest, runoff and erosion, and transformations of phosphorus (P) in soil are the major factors influencing the P balance of croplands. It is important to integrate plant-soil-management interactions into consistent modeling systems to determine the effect of P fertilization conditions on yields and to quantify P losses. Previous assessment of P losses on large scales did not consider the interactions among these factors. Here we applied a grid-based crop model to estimate global P losses from three most produced crops: maize, rice, and wheat. The model was forced by detailed P input data sets over the period 1998–2002. According to our simulations, global P losses from the three crops reached 1.2 Tg P/year, and about 44% of it was due to soil erosion. The global total P losses were dominated by contributions from a few hot spot regions. Reducing P fertilizer in regions experiencing excessive P uses and hence losses, especially in China and India, could achieve the same yields as today and save about two thirds of global total P inputs, with the cobenefits of declining global total P losses by 41% and downstream water quality improvement. Reducing soil erosion and retaining more crop residues on croplands could further save P inputs and alleviate P losses. This study is of significance to determine the major factors influencing P balance across regions of the world and help policy makers to propose efficient strategies for tackling P-driven environmental problems. ©2018. American Geophysical Union. All Rights Reserved.
英文关键词	crop yields; global modeling; integrative assessment; mitigation; PEPIC; phosphorus losses
语种	英语
scopus关键词	agricultural land; agricultural modeling; assessment method; crop residue; crop yield; cultivation; fertilizer application; integrated approach; modeling; policy making; soil erosion; soil-vegetation interaction; China; India; Triticum aestivum; Zea mays
来源期刊	Global Biogeochemical Cycles
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/129813
作者单位	Eawag, Swiss Federal Institute of Aquatic Science and Technology, Duebendorf, Switzerland; Laboratoire des Sciences du Climat et de l'Environnement, LSCE/IPSL, CEA-CNRS-UVSQ, Université Paris-Saclay, Gif-sur-Yvette, France; State Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan University, Chengdu, China; Department of Environmental Sciences, MGU, University of Basel, Basel, Switzerland; Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, Nanjing, China; Texas A&M Agri-Life Research and Extension Center, Weslaco, TX, United States; Institute of Terrestrial Ecosystems, ETH Zürich, Zürich, Switzerland
推荐引用方式 GB/T 7714	Liu W.,Yang H.,Ciais P.,et al. Integrative Crop-Soil-Management Modeling to Assess Global Phosphorus Losses from Major Crop Cultivations[J],2018,32(7).
APA	Liu W..,Yang H..,Ciais P..,Stamm C..,Zhao X..,...&Schulin R..(2018).Integrative Crop-Soil-Management Modeling to Assess Global Phosphorus Losses from Major Crop Cultivations.Global Biogeochemical Cycles,32(7).
MLA	Liu W.,et al."Integrative Crop-Soil-Management Modeling to Assess Global Phosphorus Losses from Major Crop Cultivations".Global Biogeochemical Cycles 32.7(2018).