气候变化领域集成服务门户(CCPortal): A holistic framework integrating plant-microbe-mineral regulation of soil bioavailable nitrogen

CCPortal

DOI	10.1007/s10533-021-00793-9
	A holistic framework integrating plant-microbe-mineral regulation of soil bioavailable nitrogen
	Daly A.B.; Jilling A.; Bowles T.M.; Buchkowski R.W.; Frey S.D.; Kallenbach C.M.; Keiluweit M.; Mooshammer M.; Schimel J.P.; Grandy A.S.
发表日期	2021
ISSN	1682563
起始页码	211
结束页码	229
卷号	154 期号:2
英文摘要	Soil organic nitrogen (N) is a critical resource for plants and microbes, but the processes that govern its cycle are not well-described. To promote a holistic understanding of soil N dynamics, we need an integrated model that links soil organic matter (SOM) cycling to bioavailable N in both unmanaged and managed landscapes, including agroecosystems. We present a framework that unifies recent conceptual advances in our understanding of three critical steps in bioavailable N cycling: organic N (ON) depolymerization and solubilization; bioavailable N sorption and desorption on mineral surfaces; and microbial ON turnover including assimilation, mineralization, and the recycling of microbial products. Consideration of the balance between these processes provides insight into the sources, sinks, and flux rates of bioavailable N. By accounting for interactions among the biological, physical, and chemical controls over ON and its availability to plants and microbes, our conceptual model unifies complex mechanisms of ON transformation in a concrete conceptual framework that is amenable to experimental testing and translates into ideas for new management practices. This framework will allow researchers and practitioners to use common measurements of particulate organic matter (POM) and mineral-associated organic matter (MAOM) to design strategic organic N-cycle interventions that optimize ecosystem productivity and minimize environmental N loss. © 2021, The Author(s).
英文关键词	Depolymerization; Fertilizer; Microbial physiology; Mineral associated organic matter; Particulate organic matter
语种	英语
来源期刊	Biogeochemistry
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/184588
作者单位	Department of Natural Resources and the Environment, University of New Hampshire, 56 College Road, Durham, NH 03824, United States; Department of Plant and Soil Sciences, Oklahoma State University, Stillwater, OK, United States; Department of Environmental Science, Policy, and Management, University of California Berkeley, Berkeley, CA, United States; Department of Biology, University of Western Ontario, London, ON, Canada; Department of Natural Resource Sciences, McGill University, Montreal, Canada; School of Earth & Sustainability and Stockbridge School of Agriculture, University of Massachusetts, Amherst, MA, United States; Department of Ecology, Evolution, and Marine Biology, University of California, Santa Barbara, CA, United States
推荐引用方式 GB/T 7714	Daly A.B.,Jilling A.,Bowles T.M.,et al. A holistic framework integrating plant-microbe-mineral regulation of soil bioavailable nitrogen[J],2021,154(2).
APA	Daly A.B..,Jilling A..,Bowles T.M..,Buchkowski R.W..,Frey S.D..,...&Grandy A.S..(2021).A holistic framework integrating plant-microbe-mineral regulation of soil bioavailable nitrogen.Biogeochemistry,154(2).
MLA	Daly A.B.,et al."A holistic framework integrating plant-microbe-mineral regulation of soil bioavailable nitrogen".Biogeochemistry 154.2(2021).