气候变化领域集成服务门户(CCPortal): Parameterizing Perennial Bioenergy Crops in Version 5 of the Community Land Model Based on Site-Level Observations in the Central Midwestern United States

CCPortal

DOI	10.1029/2019MS001719
	Parameterizing Perennial Bioenergy Crops in Version 5 of the Community Land Model Based on Site-Level Observations in the Central Midwestern United States
	Cheng Y.; Huang M.; Chen M.; Guan K.; Bernacchi C.; Peng B.; Tan Z.
发表日期	2020
ISSN	19422466
卷号	12 期号:1
英文摘要	With projected expansion of biofuel production at a global scale, there is a pressing need to develop adequate representation of bioenergy crops in land surface models to help effectively quantify the biogeophysical and biogeochemical effects of its associated land use changes. This study implements two new perennial bioenergy crops, Miscanthus and switchgrass, into the Community Land Model Version 5 based on site-level observations from the midwestern United States by modifying parameters associated with photosynthesis, phenology, allocation, decomposition, and carbon cost of nitrogen uptake and integrating concomitantly land management practices. Sensitivity analyses indicate that carbon and energy fluxes of the perennial crops are most sensitive to photosynthesis and phenology parameters. Validation of simulated fluxes against site-level measurements demonstrates that the model is capable of capturing the overall patterns of energy and carbon fluxes, as well as physiological transitions from leaf emergence to senescence. Compared to annual crops, perennial crops feature longer growing season, greater leaf areas, and higher productivity, leading to increased transpiration, lower annual runoff, and larger carbon uptake. The model simulations suggest that with higher CO2 assimilation rates and lower demands for nutrients and water, high-yielding perennial crops are promising alternatives of bioenergy feedstocks compared to traditional annual crops not only for mitigating climate change but also for environmental conservation purposes by reducing fertilizer application and therefore alleviating surface- and ground-water contaminations. Although the local-scale simulations shed light on potential benefits of using perennial grasses as bioenergy feedstocks, quantifying consequences of their plantations at larger scales warrants additional investigation. © 2019. The Authors.
语种	英语
scopus关键词	Biofuels; Biology; Carbon; Climate change; Climate models; Feedstocks; Forestry; Groundwater; Land use; Photosynthesis; Physiological models; Sensitivity analysis; Biogeochemical effects; Community land models; Environmental conservation; Fertilizer applications; Land management practices; Land surface models; Modifying parameters; Surface and ground waters; Crops; bioenergy; biofuel; climate change; climate modeling; crop plant; energy crop; high yielding variety; land use change; perennial plant; Midwest; United States; Miscanthus; Panicum virgatum; Poaceae
来源期刊	Journal of Advances in Modeling Earth Systems
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/156774
作者单位	Atmospheric Sciences and Global Change Division, Pacific Northwest National Laboratory, Richland, WA, United States; Joint Global Change Research Institute, Pacific Northwest National Laboratory, College Park, MD, United States; Department of Natural Resources and Environmental Sciences, University of Illinois at Urbana-Champaign, Urbana, IL, United States; National Center for Supercomputing Applications, University of Illinois at Urbana-Champaign, Urbana, IL, United States; Agricultural Research Service, Global Change and Photosynthesis Research Unit, U.S. Department of Agriculture, Urbana, IL, United States; Department of Plant Biology, University of Illinois at Urbana-Champaign, Urbana, IL, United States; Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana-Champaign, Urbana, IL, United States
推荐引用方式 GB/T 7714	Cheng Y.,Huang M.,Chen M.,et al. Parameterizing Perennial Bioenergy Crops in Version 5 of the Community Land Model Based on Site-Level Observations in the Central Midwestern United States[J],2020,12(1).
APA	Cheng Y..,Huang M..,Chen M..,Guan K..,Bernacchi C..,...&Tan Z..(2020).Parameterizing Perennial Bioenergy Crops in Version 5 of the Community Land Model Based on Site-Level Observations in the Central Midwestern United States.Journal of Advances in Modeling Earth Systems,12(1).
MLA	Cheng Y.,et al."Parameterizing Perennial Bioenergy Crops in Version 5 of the Community Land Model Based on Site-Level Observations in the Central Midwestern United States".Journal of Advances in Modeling Earth Systems 12.1(2020).