Fractal features of soil particle size distribution and the implication for indicating desertification
文献类型：期刊论文
| 作者 | Su, YZ; Zhao, HL; Zhao, WZ; Zhang, TH |
| 刊名 | GEODERMA
 |
| 出版日期 | 2004-09-01 |
| 卷号 | 122期号:1页码:43-49 |
| 关键词 | soil degradation wind erosion soil particle size distribution fractal dimension organic Q total N |
| ISSN号 | 0016-7061 |
| DOI | 10.1016/j.geoderma.2003.12.003 |
| 通讯作者 | Su, YZ(suchengyang@yahoo.com.cn) |
| 英文摘要 | Some of the effects of land desertification on soil properties are manifested by the coarsening of the soil particlesize distribution (PSD) and the losses in organic C and nutrients. The changes and characteristics of PSD and selected chemical properties in soils at the 0-15 cm plough layer from different degrees of desertified croplands are analyzed in the semiarid Horqin Sandy Land, northern China. The fractal dimension of the PSD is emanated to characterize the patterns of PSD. The relationships between the fractal dimension of the PSD and selected soil properties are discussed. The results show that: (1) in the transformation from potential desertified cropland to extremely desertified cropland, the sand content at the 0-15 cm soil increased from 69% to 93%, organic C and total N contents decreased by 65% and 69%, respectively; (2) the fractal dimension of PSD ranged from 2.179 to 2.611, the more the contents of sand, the lower the fractal dimension and the higher the desertified degree of farmland. In the desertification process within the studied area, the mean fractal dimension decreased from 2.555 for the potential desertified soils to 2.298 for extremely desertified soils; (3) there existed considerable linear relationships between fractal dimension and soil properties. It was shown that fractal dimensions of PSD are useful parameters able to monitor soil degradation and to estimate the degree of soil desertification. (C) 2004 Published by Elsevier B.V. |
| 收录类别 | SCI |
| WOS关键词 | DIMENSION |
| WOS研究方向 | Agriculture |
| WOS类目 | Soil Science |
| 语种 | 英语 |
| WOS记录号 | WOS:000223108100003 |
| 出版者 | ELSEVIER SCIENCE BV |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2556981 |
| 专题 | 寒区旱区环境与工程研究所 |
| 通讯作者 | Su, YZ |
| 作者单位 | 1.Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou 730000, Peoples R China 2.Lanzhou Univ, Minist Educ, Key Lab Arid & Grassland Agroecol, Lanzhou 730000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Su, YZ,Zhao, HL,Zhao, WZ,et al. Fractal features of soil particle size distribution and the implication for indicating desertification[J]. GEODERMA,2004,122(1):43-49. |
| APA | Su, YZ,Zhao, HL,Zhao, WZ,&Zhang, TH.(2004).Fractal features of soil particle size distribution and the implication for indicating desertification.GEODERMA,122(1),43-49. |
| MLA | Su, YZ,et al."Fractal features of soil particle size distribution and the implication for indicating desertification".GEODERMA 122.1(2004):43-49. |
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来源：寒区旱区环境与工程研究所
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