干旱区生态环境知识资源中心(Arid): Controls on the presence and storage of soil inorganic carbon in a semi-arid watershed

Arid

DOI	10.1016/j.catena.2023.106980
	Controls on the presence and storage of soil inorganic carbon in a semi-arid watershed
	Stanbery, Christopher; Ghahremani, Zahra; Huber, David P.; Will, Ryan; Benner, Shawn G.; Glenn, Nancy; Hanif, Tanzila; Spaete, Lucas; Terhaar, Danielle; Lohse, Kathleen A.; Seyfried, Mark; Freutel, William; Pierce, Jennifer L.
通讯作者	Pierce, JL
来源期刊	CATENA
ISSN	0341-8162
EISSN	1872-6887
出版年	2023
卷号	225
英文摘要	Soil inorganic carbon (SIC) constitutes-40-50% of the terrestrial soil carbon and is an integral part of the global carbon cycle. Rainfall is a primary factor controlling SIC accumulation; however, the distribution and hierarchy of controls on SIC development in arid and semi-arid regions is poorly understood. The Reynolds Creek Experimental Watershed (RCEW) in southwestern Idaho is an ideal location to study factors influencing SIC because it spans a wide mean annual precipitation range (235 mm to 900 mm) along a 1,425 to 2,111 m elevation gradient and has soils derived from a wide variety of parent materials (granite, basalt, dust, and al-luvium). We collected soil samples along this elevational gradient to understand local controls on SIC distri-butions. SIC content was quantified at 71 soil pits and/or augered cores collected between approximately 0-1 m depth or until refusal. Consistent with previous studies, we found variations in precipitation governed the presence or absence of SIC; field measurements of the top 1 m of soils confirm little or no SIC in soils receiving > 500 mm in mean annual precipitation. Below this 500 mm threshold, SIC pools varied substantially and significantly between sites. Results showed that 90% of sites (64 sites) contained less than 10 kg m- 2 SIC, 7% (5 sites) contained 10-20 kg m- 2, and 3% (2 sites) contain between 24 and 29 kg m- 2 SIC. The total SIC within RCEW was estimated at-5.17 x 105 Mg. After precipitation, slope consistently ranked as the second most important predictor of SIC accumulation in random forest analysis. Wind-blown dust likely contributed to SIC accumulation; prior work indicates an average dust flux rate in RCEW of about 11 +/- 4.9 g m- 2 year -1. This study provides an initial model predicting SIC distribution and accumulation in a shrub-dominated dryland watershed.
英文关键词	Soil inorganic carbon Semi-arid Carbon storage Modeling Pedogenic carbonate Critical zone Reynolds Creek Experimental Watershed
类型	Article
语种	英语
开放获取类型	Bronze
收录类别	SCI-E
WOS记录号	WOS:000942509500001
WOS关键词	PEDOGENIC CARBONATE ; MOJAVE-DESERT ; SEASONAL BIAS ; CLIMATE ; IDAHO ; SCALE ; PRECIPITATION ; DEPOSITS ; STOCKS ; DUST
WOS类目	Geosciences, Multidisciplinary ; Soil Science ; Water Resources
WOS研究方向	Geology ; Agriculture ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/395677
推荐引用方式 GB/T 7714	Stanbery, Christopher,Ghahremani, Zahra,Huber, David P.,et al. Controls on the presence and storage of soil inorganic carbon in a semi-arid watershed[J],2023,225.
APA	Stanbery, Christopher.,Ghahremani, Zahra.,Huber, David P..,Will, Ryan.,Benner, Shawn G..,...&Pierce, Jennifer L..(2023).Controls on the presence and storage of soil inorganic carbon in a semi-arid watershed.CATENA,225.
MLA	Stanbery, Christopher,et al."Controls on the presence and storage of soil inorganic carbon in a semi-arid watershed".CATENA 225(2023).