干旱区生态环境知识资源中心(Arid): The generation and redistribution of soil cations in high elevation catenas in the Fraser Experimental Forest, Colorado, US

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DOI	10.1016/j.geoderma.2018.07.024
	The generation and redistribution of soil cations in high elevation catenas in the Fraser Experimental Forest, Colorado, US
	Bergstrom, Robert M.; Borch, Thomas; Martin, Partick H.; Melzer, Suellen; Rhoades, Charles C.; Salley, Shawn W.; Kelly, Eugene F.
通讯作者	Bergstrom, RM (corresponding author), Suite 550-N,202 S Lamar St, Jackson, MS 39201 USA.
来源期刊	GEODERMA
ISSN	0016-7061
EISSN	1872-6259
出版年	2019
卷号	333 页码:135-144
英文摘要	Pedogenic processes imprint their signature on soils over the course of thousands to millions of years in most soil systems. Variation in soil forming processes such as parent material weathering, organic material additions, hydrologic processes, and atmospheric additions account for the distribution and sourcing of cations in ecosystems, and hence exert a strong influence on ecosystem productivity. Soil nutrient dynamics of cations also provide an indication of the dominant soil forming processes at work in a particular system. To gain insight into the generation and distribution of the soil cation pool in the Fraser Experimental Forest (FEF), we combined geochemical mass balance techniques and isotopic analyses of soil geochemical data to pedons across eight soil catenas in complex mountain terrain typical of the central Rocky Mountains. We found that mass gains in the FEF soils are primarily attributable to pedogenic additions of Ca to the soil mantle via atmospheric dust, and specifically that soil catenas on the summit landscapes were most enriched in Ca. Our data also show that atmospheric deposition contributions (calculated using Sr isotope ratios) to soils is as high as 82% (+/- 3% SD), and that this isotopic signature in A-horizons and subsurface soil horizons diverges along a soil catena, due to both vertical and lateral hydrologic redistribution processes. Our results suggest that long term soil development and associated chemical signatures at the FEF are principally driven by the coupling of landscape scale cation supply processes, snow distribution, and snowmelt dynamics. Soil development models describing pedogenesis across catenas in montane ecosystems must pay special attention to atmospheric inputs and their redistribution. Any changes to these dynamics will affect productivity and soil/water chemistry in such ecosystems as investigated here.
英文关键词	Soil catena Soil calcium Strontium isotopes Atmospheric deposition Weathering
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000447117100013
WOS关键词	STRONTIUM ISOTOPES ; CHANGING SOURCES ; AEOLIAN DUST ; ATMOSPHERIC DEPOSITION ; WEATHERING PROFILES ; CALCIUM SOURCES ; FRONT RANGE ; ALPINE ; ECOSYSTEM ; DESERT
WOS类目	Soil Science
WOS研究方向	Agriculture
来源机构	Colorado State University ; E18
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/369395
作者单位	[Bergstrom, Robert M.] Suite 550-N,202 S Lamar St, Jackson, MS 39201 USA; [Borch, Thomas; Melzer, Suellen; Kelly, Eugene F.] Colorado State Univ, Dept Soil & Crop Sci, Ft Collins, CO 80523 USA; [Martin, Partick H.] Univ Denver, Dept Biol Sci, Denver, CO 80208 USA; [Rhoades, Charles C.] USDA Forest Serv, Ft Collins, CO USA; [Salley, Shawn W.] USDA ARS, Jornada Expt Range, Las Cruces, NM USA
推荐引用方式 GB/T 7714	Bergstrom, Robert M.,Borch, Thomas,Martin, Partick H.,et al. The generation and redistribution of soil cations in high elevation catenas in the Fraser Experimental Forest, Colorado, US[J]. Colorado State University, E18,2019,333:135-144.
APA	Bergstrom, Robert M..,Borch, Thomas.,Martin, Partick H..,Melzer, Suellen.,Rhoades, Charles C..,...&Kelly, Eugene F..(2019).The generation and redistribution of soil cations in high elevation catenas in the Fraser Experimental Forest, Colorado, US.GEODERMA,333,135-144.
MLA	Bergstrom, Robert M.,et al."The generation and redistribution of soil cations in high elevation catenas in the Fraser Experimental Forest, Colorado, US".GEODERMA 333(2019):135-144.