Validation of Spring Wheat Responses to Elevated CO2, Irrigation, and Nitrogen Fertilization in the Community Land Model 4.5

doi:10.1029/2020EA001088

CORC > 成都山地灾害与环境研究所 > 中国科学院水利部成都山地灾害与环境研究所

	Validation of Spring Wheat Responses to Elevated CO2, Irrigation, and Nitrogen Fertilization in the Community Land Model 4.5
	Lu Yaqiong 1,2; Kimball Bruce A.3
刊名	EARTH AND SPACE SCIENCE
	2020
卷号	7 期号:6 页码:UNSP e2020EA001088
关键词	CLM
ISSN号	0000
DOI	10.1029/2020EA001088
产权排序	1
文献子类	Article
英文摘要	The Community Land Model (CLM) started to incorporate crop growth models since version 4.0 in 2012. Since then, the crop model in CLM has been evolved remarkably, but some of the key crop growth responses to environmental conditions (such as the elevated CO2) have not been well validated. Here, we set up single point simulations with CLM (version 4.5) and validated spring wheat growth response against the Maricopa spring wheat Free Air CO2 Enrichment (FACE) experiment that consisted of multiyear paired treatments to understand the growth response to elevated CO2, irrigation, nitrogen fertilization, and their interactions. Overall, CLM showed too positive growth response to elevated CO2 but insufficient growth response to irrigation. The overestimated growth response to elevated CO2 may be due to ignoring factors (e.g., leaf traits) that will limit crop growth under elevated CO2. The insufficient response to irrigation is due to CLM simulating lower latent heat flux during April and May, which resulted in higher soil moisture. In response to nitrogen fertilization, CLM underestimated leaf area index increase but overestimated grain yield increase. In terms of energy fluxes, CLM showed decreased latent heat flux in response to elevated CO2 but increased latent heat flux in response to nitrogen fertilization, but the response magnitude was much smaller than the observations. Based on these validations, we summarized further model developments for CLM to better simulate crop growth process.
电子版国际标准刊号	2333-5084
资助项目	National Science Foundation ; Strategic Priority Research Program of Chinese Academy of Sciences[XDA20050102] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDA23060601] ; National Science Foundation (NSF)[AGS-1243095] ; National Natural Science Foundation of China[41975135]
WOS关键词	CARBON-DIOXIDE ENRICHMENT ; STOMATAL CONDUCTANCE ; AMBIENT ATMOSPHERE ; ENERGY-BALANCE ; FACE ; CROP ; GROWTH ; PHOTOSYNTHESIS ; SIMULATION ; ECOSYS
WOS研究方向	Astronomy & Astrophysics ; Geology
语种	英语
出版者	AMER GEOPHYSICAL UNION
WOS记录号	WOS:000545722200012
资助机构	National Science Foundation ; Strategic Priority Research Program of Chinese Academy of Sciences ; National Science Foundation (NSF) ; National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.imde.ac.cn/handle/131551/35188]
专题	中国科学院水利部成都山地灾害与环境研究所
通讯作者	Lu Yaqiong
作者单位	1.Key Laboratory of Mountain Surface Processes and Ecological Regulation, Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, China; 2.Climate and Global Dynamics Laboratory, National Center for Atmospheric Research, Boulder, CO, USA; 3.U.S. AridLand Agricultural Research Center, Agricultural Research Service, USDA, Maricopa, AZ, USA
推荐引用方式 GB/T 7714	Lu Yaqiong,Kimball Bruce A.. Validation of Spring Wheat Responses to Elevated CO2, Irrigation, and Nitrogen Fertilization in the Community Land Model 4.5[J]. EARTH AND SPACE SCIENCE,2020,7(6):UNSP e2020EA001088.
APA	Lu Yaqiong,&Kimball Bruce A..(2020).Validation of Spring Wheat Responses to Elevated CO2, Irrigation, and Nitrogen Fertilization in the Community Land Model 4.5.EARTH AND SPACE SCIENCE,7(6),UNSP e2020EA001088.
MLA	Lu Yaqiong,et al."Validation of Spring Wheat Responses to Elevated CO2, Irrigation, and Nitrogen Fertilization in the Community Land Model 4.5".EARTH AND SPACE SCIENCE 7.6(2020):UNSP e2020EA001088.