Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/j.agwat.2018.08.017 |
Modeling nitrogen leaching in a spring maize system under changing climate and genotype scenarios in arid Inner Mongolia, China | |
He, Yong1; Liang, Hao2; Hu, Kelin2; Wang, Hongyuan3; Hou, Lingling4 | |
通讯作者 | Hu, Kelin ; Hou, Lingling |
来源期刊 | AGRICULTURAL WATER MANAGEMENT
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ISSN | 0378-3774 |
EISSN | 1873-2283 |
出版年 | 2018 |
卷号 | 210页码:316-323 |
英文摘要 | Although the impacts of climate change on crop yield and production in China have been studied, the potential impacts on nitrate leaching are less well-known. In this study, we considered how climate change and crop genotypes with different N uptake capacities could affect soil water drainage, nitrate leaching, and grain yield under currently optimized irrigation and fertilization practices in the spring maize system of northwest China. After testing the performance of the WHCNS (soil Water Heat Carbon Nitrogen Simulator) model, a total number of 420 simulations spanning representative climate projections (2036-2065), genotypes, and time spans led to three key findings. First, the projected climate changes had no significant effects on soil water drainage and thus no impact on nitrate leaching, because the latter was primarily influenced by drainage. Second, the effects of genotype changes on reducing nitrate leaching via increasing N uptake were marginal over the whole growth period, again because these had no significant effect on soil water drainage. Finally, the projected yield reduction (around 6.5%) occurred only in the hottest climate scenario (RCP8.5), in which transpiration was probably a more significant parameter leading to yield differences between climates. We conclude that, to offset the projected yield reduction due to temperature increases, improved agricultural technologies and practices will be needed to cope with decreased crop transpiration. In addition, reducing nitrate leaching through genetic improvement of N uptake should not be considered a research priority for mitigating the effects of current and projected climate scenarios. |
英文关键词 | Spring maize Nitrogen leaching Climate change Genotype Modelling |
类型 | Article |
语种 | 英语 |
国家 | Peoples R China |
收录类别 | SCI-E |
WOS记录号 | WOS:000445715200034 |
WOS关键词 | USE EFFICIENCIES ; DESERT OASIS ; POTATO YIELD ; HEAT-STRESS ; NORTH CHINA ; SANDY SOIL ; NITRATE ; IRRIGATION ; MANAGEMENT ; WATER |
WOS类目 | Agronomy ; Water Resources |
WOS研究方向 | Agriculture ; Water Resources |
来源机构 | 中国农业大学 ; 北京大学 |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/207405 |
作者单位 | 1.Chinese Acad Agr Sci, Inst Environm & Sustainable Dev Agr, Beijing 100081, Peoples R China; 2.China Agr Univ, Coll Resources & Environm Sci, Beijing 100193, Peoples R China; 3.Chinese Acad Agr Sci, Inst Agr Resources & Reg Planning, Beijing 100081, Peoples R China; 4.Peking Univ, Sch Adv Agr Sci, Beijing 100871, Peoples R China |
推荐引用方式 GB/T 7714 | He, Yong,Liang, Hao,Hu, Kelin,et al. Modeling nitrogen leaching in a spring maize system under changing climate and genotype scenarios in arid Inner Mongolia, China[J]. 中国农业大学, 北京大学,2018,210:316-323. |
APA | He, Yong,Liang, Hao,Hu, Kelin,Wang, Hongyuan,&Hou, Lingling.(2018).Modeling nitrogen leaching in a spring maize system under changing climate and genotype scenarios in arid Inner Mongolia, China.AGRICULTURAL WATER MANAGEMENT,210,316-323. |
MLA | He, Yong,et al."Modeling nitrogen leaching in a spring maize system under changing climate and genotype scenarios in arid Inner Mongolia, China".AGRICULTURAL WATER MANAGEMENT 210(2018):316-323. |
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