干旱区生态环境知识资源中心(Arid): Disturbance impacts on porosity and hydraulic properties of vesicular horizons

Arid

DOI	10.1002/saj2.20055
	Disturbance impacts on porosity and hydraulic properties of vesicular horizons
	Turk, Judith K.; Graham, Robert C.
通讯作者	Turk, JK
来源期刊	SOIL SCIENCE SOCIETY OF AMERICA JOURNAL
ISSN	0361-5995
EISSN	1435-0661
出版年	2020
卷号	84 期号:2 页码:543-555
英文摘要	Rapid formation of vesicular pores has been observed following disturbance of vesicular (V) horizons. This study investigates the post-disturbance recovery of V horizons and the impact on hydraulic properties. At nine study sites, infiltration rates were measured using a tension disk infiltrometer, and intact samples were collected for analysis using high-resolution x-ray computed tomography (CT). The V horizon material was then removed, crushed, replaced, and left to recover for 1 yr before repeating the infiltration measurement and CT analysis. Some recovery of vesicular and vugh porosity was observed at all of the study sites. However, the V horizons formed in the first year after disturbance were thinner, with smaller pores, and with a reduction in vesicle and vugh porosity from an average of 2.9% before disturbance to 0.4% after disturbance. The saturated hydraulic conductivity of the V horizons was also significantly lowered, from an average of 20 cm d(-1) prior to disturbance to 6.6 cm d(-1) at 1 yr after disturbance. Vesicle and vugh porosity formed 1 yr after disturbance was positively correlated with predisturbance vesicle and vugh porosity (R-2 = .57; P = 0.02) and sand percentage (R-2 = .51; P = .03) and negatively correlated with silt percentage (R-2 = .51; P = .03). No relationship was observed between post-disturbance formation of vesicle and vugh porosity and precipitation events during the recovery period, clay percentage, CaCO3 percentage, or saline-sodic classification. V horizons show incipient development at 1 yr after disturbance, but porosity and hydraulic properties are significantly altered from their undisturbed state.
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:000591660400021
WOS关键词	CIMA-VOLCANIC-FIELD ; MOJAVE-DESERT ; ARID SOILS ; INFILTRATION ; MORPHOLOGY ; EVOLUTION ; PAVEMENT ; NEVADA ; PLEISTOCENE ; CALIFORNIA
WOS类目	Soil Science
WOS研究方向	Agriculture
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/327601
作者单位	[Turk, Judith K.] Univ Nebraska, Sch Nat Resources, Conservat & Survey Div, Lincoln, NE 68583 USA; [Graham, Robert C.] Univ Calif Riverside, Dept Environm Sci, Riverside, CA 92521 USA
推荐引用方式 GB/T 7714	Turk, Judith K.,Graham, Robert C.. Disturbance impacts on porosity and hydraulic properties of vesicular horizons[J],2020,84(2):543-555.
APA	Turk, Judith K.,&Graham, Robert C..(2020).Disturbance impacts on porosity and hydraulic properties of vesicular horizons.SOIL SCIENCE SOCIETY OF AMERICA JOURNAL,84(2),543-555.
MLA	Turk, Judith K.,et al."Disturbance impacts on porosity and hydraulic properties of vesicular horizons".SOIL SCIENCE SOCIETY OF AMERICA JOURNAL 84.2(2020):543-555.