Arid
DOI10.1080/15324980290000403
Recovery of severely compacted soils in the Mojave Desert, California, USA
Webb, RH
通讯作者Webb, RH
来源期刊ARID LAND RESEARCH AND MANAGEMENT
ISSN1532-4982
出版年2002
卷号16期号:3页码:291-305
英文摘要

Often as a result of large-scale militant maneuvers in the past, many soils in the Mojave Desert are highly vulnerable to soil compaction, particularly when wet. Previous studies indicate that natural recovery of severely compacted desert soils is extremely slow, and some researchers hale suggested that subsurface compaction may not recover. Poorly sorted soils, particularly those with a loamy sand texture, are most vulnerable to soil compaction, and these soils are the most common in alluvial fans of the Mojave Desert. Recovery of compacted soil is expected to rare as a function of precipitation amounts, wetting-and-drying cycles, free:e-thaw cycles, and bioturbation, particularly root growth. Compaction recovery, as estimated using penetration depth and bulk density, was measured at 19 sites with 32 site-time combinations, including the former World blur II Arm h sites of Camps Ibis, Granite, Iron Mountain. Clipper, and Essex. Although compaction at these sites was caused by a wide variety of forces, ranging from human trampling to tank traffic, the data do not allow segregation of differences in recovery, rates for different compaction forces. The recovery rate appears to he logarithmic, with the highest rate of change occurring in the fist few decades following abandonment. Some higher-elevation sites have completely recovered from soil compaction after 70 years. Using a linear model of recovery, the full recovery time ranges from 92 to 100 years; using a logarithmic model, which asymptotically approaches full recovery, the tune required for 85% recovery ranges from 105-124 years.


英文关键词desert soils disturbance recovery military effects soil bulk density penetration resistance
类型Article
语种英语
国家USA
收录类别SCI-E
WOS记录号WOS:000176971400007
WOS关键词VEGETATION ; NEVADA ; PLANT
WOS类目Environmental Sciences ; Soil Science
WOS研究方向Environmental Sciences & Ecology ; Agriculture
来源机构United States Geological Survey
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/142095
作者单位(1)US Geol Survey, Tucson, AZ 85745 USA
推荐引用方式
GB/T 7714
Webb, RH. Recovery of severely compacted soils in the Mojave Desert, California, USA[J]. United States Geological Survey,2002,16(3):291-305.
APA Webb, RH.(2002).Recovery of severely compacted soils in the Mojave Desert, California, USA.ARID LAND RESEARCH AND MANAGEMENT,16(3),291-305.
MLA Webb, RH."Recovery of severely compacted soils in the Mojave Desert, California, USA".ARID LAND RESEARCH AND MANAGEMENT 16.3(2002):291-305.
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