气候变化领域集成服务门户(CCPortal): Influence of fire retardant and pyrogenic carbon on microscale changes in soil nitrogen and phosphorus

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DOI	10.1007/s10533-020-00746-8
	Influence of fire retardant and pyrogenic carbon on microscale changes in soil nitrogen and phosphorus
	Gao S.; DeLuca T.H.
发表日期	2021
ISSN	1682563
起始页码	117
结束页码	126
卷号	152 期号:1
英文摘要	During wildfire season in the western US, fire retardant chemicals are dropped from aircraft in an effort to control the spread of fire. Fire retardant dropped on sites that are not actively burning results in exceptionally high soil nitrogen (N) and phosphorus (P) “fertilization” effect on wildland soils impacting terrestrial and aquatic ecosystems. Herein, we used microdialysis to evaluate the short-term spatiotemporal dynamics of soil inorganic N and ortho-P fluxes in response to wood pyrogenic carbon (PyC) on soils receiving fire retardant (Phos-Chek) in a 28-d column experiment. Retardant additions to soil induced dramatic increases in soil inorganic N and ortho-P flux rates. The addition of wood PyC to soils with retardant significantly and immediately reduced ortho-P flux rates at multiple depths (1, 5, and 10 cm) and reduced NH4+ flux rates at 10 cm while retaining flux rates at 1 and 5 cm. These effects were observed throughout the course of the experiment and were more pronounced towards the end of the experiment. By d-28, PyC significantly reduced the NH4+, NO3−, and ortho-P accumulation on ionic resins at soil column bottoms by 50%, 52%, and 43%, respectively. The application of wood PyC may be effective at buffering excess nutrient fluxes from fire retardant and reduce short-term nutrient leaching in unburnt forest soils exposed to fire retardant. © 2021, The Author(s), under exclusive licence to Springer Nature Switzerland AG part of Springer Nature.
英文关键词	Charcoal; Fire retardant; Firefighting; Microdialysis; Nutrient leaching; Pyrogenic carbon
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/184659
作者单位	Department of Forest Ecosystems & Society, College of Forestry, Oregon State University, Corvallis, OR 97331, United States
推荐引用方式 GB/T 7714	Gao S.,DeLuca T.H.. Influence of fire retardant and pyrogenic carbon on microscale changes in soil nitrogen and phosphorus[J],2021,152(1).
APA	Gao S.,&DeLuca T.H..(2021).Influence of fire retardant and pyrogenic carbon on microscale changes in soil nitrogen and phosphorus.Biogeochemistry,152(1).
MLA	Gao S.,et al."Influence of fire retardant and pyrogenic carbon on microscale changes in soil nitrogen and phosphorus".Biogeochemistry 152.1(2021).