Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1080/15324980290000403 |
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
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ISSN | 1532-4982 |
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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