Surface morphology of soil cracks in Yuanmou Dry-hot Valley Region, Southwest China
文献类型：期刊论文
| 作者 | Xiong Donghong1,2 ; Long Yi1,2; Yan Dongchun1,2; Lu Xiaoning3; Ji Zhonghua4; Fang Haidong4
|
| 刊名 | JOURNAL OF MOUNTAIN SCIENCE
 |
| 出版日期 | 2009-12-01 |
| 卷号 | 6期号:4页码:373-379 |
| 关键词 | Soil crack Surface morphology Quantitative indicator Degree of development Southwest China |
| ISSN号 | 1672-6316 |
| 合作状况 | 其它 |
| 英文摘要 | Surface morphology of soil cracks is one of the important factors influencing the water evaporation rate in cracked soil in Yuanmou Dry-hot Valley Region, Southwest China. Quantitative study of the complicated surface morphology of soil cracks is a prerequisite for further studies of soil-cracking mechanisms. The present paper establishes a quantitative indicator system by application of concepts and methods originating from Fractal Geometry and Network Analysis. These indicators can effectively express the complicated features of soil-crack network structure. Furthermore, a series of values related to soil-crack morphology was obtained by image processing on field photos of soil-crack quads, and gradation criteria for the degree of development of soil cracks were determined. Finally, the changes in values of the morphological indicators under different degrees of development were analyzed in detail. Our results indicate that (1) the degree of development of soil cracks can be divided into five grades, i.e., feeble development, slight development, medium development, intensive development and extremely intensive development; (2) the values of the indicators change predictably with increasing degree of development of soil cracks. The area density (Dc) increases, and both the area-weighted mean ratio of crack area to perimeter (AWMARP), which reflects the intensity of cracking, and the index r, which is related to the connectivity of a soil crack, grow uniformly (albeit with different forms). AWMRAP increases at a geometric rate while r shows logarithmmic growth, indicating a gradual increase in the connectivity of a soil crack. Nevertheless, the area-weighted mean of soil-crack fractal dimension (AWMFRAC) shows a decreasing trend, indicating a gradual decline in the complexity of cracks as area density increases. |
| WOS标题词 | Science & Technology ; Life Sciences & Biomedicine |
| 类目[WOS] | Environmental Sciences |
| 研究领域[WOS] | Environmental Sciences & Ecology |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000271272100007 |
| 公开日期 | 2010-10-12 |
| 源URL | [http://ir.imde.ac.cn/handle/131551/2136]  |
| 专题 | 成都山地灾害与环境研究所_成都山地所知识仓储（2009年以前） 成都山地灾害与环境研究所_山地灾害与地表过程重点实验室 成都山地灾害与环境研究所_山地表生过程与生态调控重点实验室 |
| 作者单位 | 1.CAS, Key Lab Mt Hazards & Surface Proc, Chengdu 610041, Sichuan, Peoples R China 2.CAS, Inst Mt Hazards & Environm, Chengdu 610041, Sichuan, Peoples R China 3.Chengdu Univ Informat Technol, Dept Environm Engn, Chengdu 610225, Sichuan, Peoples R China 4.Yunnan Acad Agr Sci, Inst Trop Ecoagr Sci, Yuanmou 651300, Yunnan, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xiong Donghong,Long Yi,Yan Dongchun,et al. Surface morphology of soil cracks in Yuanmou Dry-hot Valley Region, Southwest China[J]. JOURNAL OF MOUNTAIN SCIENCE,2009,6(4):373-379. |
| APA | Xiong Donghong,Long Yi,Yan Dongchun,Lu Xiaoning,Ji Zhonghua,&Fang Haidong.(2009).Surface morphology of soil cracks in Yuanmou Dry-hot Valley Region, Southwest China.JOURNAL OF MOUNTAIN SCIENCE,6(4),373-379. |
| MLA | Xiong Donghong,et al."Surface morphology of soil cracks in Yuanmou Dry-hot Valley Region, Southwest China".JOURNAL OF MOUNTAIN SCIENCE 6.4(2009):373-379. |
入库方式： OAI收割
来源：成都山地灾害与环境研究所
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