Fractal characteristics of soils under different land-use patterns in the and and semiarid regions of the Tibetan Plateau, China
文献类型：期刊论文
| 作者 | Wang, Xiaodan1,2 ; Li, Mai-He1,2,3; Liu, Shuzhen1,2; Liu, Gangcai1,2
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| 刊名 | GEODERMA
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| 出版日期 | 2006-09-01 |
| 卷号 | 134期号:1-2页码:56-61 |
| 关键词 | fractal dimension land use change soil degradation soil chemical properties soil physical properties |
| ISSN号 | 0016-7061 |
| 通讯作者 | Wang, Xiaodan |
| 英文摘要 | The application of fractal geometry to describe soil structure, soil dynamics, and physical processes within soil is becoming an increasingly useful tool that allows for a better understanding of the performance of soil systems. The fractal dimension of particle-size distributions (PSDs) is often used to estimate several properties in soils, such as texture and moisture characteristics. Land use patterns largely influence the PSD of a soil, but information on how this occurs for different land use patterns is very limited. In this study a modified number-based method has been applied to characterize fractal dimension of PSDs of Cryic Axidisols soils from the Tibetan Plateau, China. The various soil samples were obtained from four different types of land-use patterns: a land with integrated grass and sparse brushwood cover (IGB, similar to 10-30% grass and similar to 10% brushwood), a well-covered grassland (WCG, > 75% grass), a bare land without any vegetation (BL), and a cropland used for growing wheat (CL). Analysis of the soils revealed that (1) the sand content of the top 15 cm of soil increased from 50.14 to 85.61 g/kg, (2) the soil carbon decreased from 9.94 to 3.11 g organic carbon per kg soil, (3) the soil nitrogen content decreased from 0.223 to 0.844 g nitrogen per kg soil, and (4) the fractal dimension of PSD decreased from 2.92 to 2.45, following the order IGB > WCG > BL > CL. Thus, land use had considerable influences on the fractal dimension of PSD and various other soil properties. Further, this study shows that the fractal dimensions of PSD can be a useful parameter to monitor soil degradation induced by land use patterns and changes. (c) 2005 Elsevier B.V. All rights reserved. |
| WOS标题词 | Science & Technology ; Life Sciences & Biomedicine |
| 类目[WOS] | Soil Science |
| 研究领域[WOS] | Agriculture |
| 关键词[WOS] | PARTICLE-SIZE DISTRIBUTION ; ORGANIC-MATTER ; DESERTIFICATION ; FRAGMENTATION ; PARAMETERS ; DIMENSIONS ; MANAGEMENT ; TEXTURE |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000239351100006 |
| 源URL | [http://ir.imde.ac.cn/handle/131551/10504]  |
| 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.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Peoples R China 2.Minist Water Conservancy & Power, Chengdu 610041, Peoples R China 3.Swiss Fed Inst Forest Snow & Landscape Res, WSL, CH-8903 Zurich, Switzerland |
| 推荐引用方式 GB/T 7714 | Wang, Xiaodan,Li, Mai-He,Liu, Shuzhen,et al. Fractal characteristics of soils under different land-use patterns in the and and semiarid regions of the Tibetan Plateau, China[J]. GEODERMA,2006,134(1-2):56-61. |
| APA | Wang, Xiaodan,Li, Mai-He,Liu, Shuzhen,&Liu, Gangcai.(2006).Fractal characteristics of soils under different land-use patterns in the and and semiarid regions of the Tibetan Plateau, China.GEODERMA,134(1-2),56-61. |
| MLA | Wang, Xiaodan,et al."Fractal characteristics of soils under different land-use patterns in the and and semiarid regions of the Tibetan Plateau, China".GEODERMA 134.1-2(2006):56-61. |
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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