Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1080/15324980802183137 |
Erodibility of sandy loam aggregates in relation to their size and initial moisture content under different land uses in semi-arid tropics of India | |
Kukal, Surinder S.; Manmeet-Kaur; Bawa, Satvinder S. | |
通讯作者 | Kukal, Surinder S. |
来源期刊 | ARID LAND RESEARCH AND MANAGEMENT
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ISSN | 1532-4982 |
出版年 | 2008 |
卷号 | 22期号:3页码:216-227 |
英文摘要 | Soil erodibility, an index of ease of detachment of soil aggregates due to beating action of falling raindrops, is generally characterized through soil physical properties-based indices, which may not be applicable universally. The water stability of aggregates as determined by simple shaking under water though a more reliable index, does not simulate the actual field situation. The present study was conducted to determine the erodibility of natural, undisturbed soil aggregates from agricultural, forest, pasture, and eroded land uses from Punjab, India, in relation to their size and moisture status, using simulated raindrops in the laboratory. The mean EI(SRT) (single raindrop technique-based erodibility index) was least under pastures followed by forest, agricultural, and eroded soils. The erodibility of aggregates increased significantly with an increase in aggregate size. Increasing the initial moisture content of aggregates resulted in increased erodibility with air-dry aggregates being the least erodible and the saturated ones the most. The effect of land use on soil erodibility was more pronounced when the aggregates were air-dried. The bigger (4.5mm) raindrops did not differentiate the erodibility of aggregates from different land uses due to higher kinetic energy of the individual raindrops. The total number of raindrops used to completely disrupt an aggregate decreased with an increase in the size of raindrops. At saturation, even the aggregates from the pasture lands became unstable and their erodibility increased. Thus, the erodibility of bigger (>10mm) saturated aggregates was higher than the smaller saturated aggregates. |
英文关键词 | aggregate size agricultural land antecedent moisture eroded land forestland pasture land soil erodibility |
类型 | Article |
语种 | 英语 |
国家 | India |
收录类别 | SCI-E |
WOS记录号 | WOS:000257740700004 |
WOS关键词 | SOIL ORGANIC-MATTER ; WATER-CONTENT ; STABILITY ; EROSION ; DETACHMENT ; RESISTANCE ; BREAKDOWN ; ENERGY ; CARBON |
WOS类目 | Environmental Sciences ; Soil Science |
WOS研究方向 | Environmental Sciences & Ecology ; Agriculture |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/156507 |
作者单位 | Punjab Agr Univ, Dept Soils, Ludhiana 141004, Punjab, India |
推荐引用方式 GB/T 7714 | Kukal, Surinder S.,Manmeet-Kaur,Bawa, Satvinder S.. Erodibility of sandy loam aggregates in relation to their size and initial moisture content under different land uses in semi-arid tropics of India[J],2008,22(3):216-227. |
APA | Kukal, Surinder S.,Manmeet-Kaur,&Bawa, Satvinder S..(2008).Erodibility of sandy loam aggregates in relation to their size and initial moisture content under different land uses in semi-arid tropics of India.ARID LAND RESEARCH AND MANAGEMENT,22(3),216-227. |
MLA | Kukal, Surinder S.,et al."Erodibility of sandy loam aggregates in relation to their size and initial moisture content under different land uses in semi-arid tropics of India".ARID LAND RESEARCH AND MANAGEMENT 22.3(2008):216-227. |
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