Knowledge Resource Center for Ecological Environment in Arid Area
| DOI | 10.1007/s40333-018-0021-2 |
| Soil fixation and erosion control by Haloxylon persicum roots in arid lands, Iran | |
| Abdi, Ehsan; Saleh, Hamid R.; Majnonian, Baris; Deljouei, Azade | |
| 通讯作者 | Abdi, Ehsan |
| 来源期刊 | JOURNAL OF ARID LAND
 |
| ISSN | 1674-6767 |
| EISSN | 2194-7783 |
| 出版年 | 2019 |
| 卷号 | 11期号:1页码:86-96 |
| 英文摘要 | Vegetation roots contribute to soil fixation and reinforcement, thus improving soil resistance against erosion. Generally, the amount of soil fixation presented by roots mainly depends on root density and tensile strength. In the present study, we conducted the research in order to further understand the biotechnical properties of Haloxylon persicum and also to quantify its role in increasing soil cohesion in arid lands of Iran. Ten H. persicum shrubs were randomly selected for root distribution and strength investigations, in which five samples were set on flat terrain and other five samples on a moderate slope terrain. The profile trench method was used to assess the root area ratio (RAR) as the index of root density and distribution. Two profiles were dug around each sample, up and downslope for sloped treatment and north and south sides for flat treatment. The results showed that RAR increased with increasing soil depth and significantly decreased in 40-50 cm layers of downhill (0.320%) and 50-60 cm for uphill (0.210%). The minimum values for the northward and southward profiles were 0.003% and 0.003%, respectively, while the maximum values were 0.260% and 0.040%, respectively. The relationship between the diameter of root samples and root tensile strength followed a negative power function, but tensile force increased with increasing root diameter following a positive power function. The pattern of increased cohesion changes in soil profile was relatively similar to RAR curves. The maximum increased cohesion due to the presence of roots in uphill and downhill sides were 0.470 and 1.400 kPa, respectively. In the flat treatment, the maximum increased cohesions were 0.570 and 0.610 kPa in northward and southward profiles, respectively. The analysis of variance showed that wind and slope induced stresses did not have any significant effect on the amount of increased cohesion of H. persicum. The findings served to develop knowledge about biotechnical properties of H. persicum root system that can assist in assessing the efficiency of afforestation and restoration measures for erosion control in arid lands. |
| 英文关键词 | biotechnical properties increased soil cohesion profile trench method root area ratio (RAR) tensile strength |
| 类型 | Article |
| 语种 | 英语 |
| 国家 | Iran |
| 开放获取类型 | Bronze |
| 收录类别 | SCI-E |
| WOS记录号 | WOS:000458965000008 |
| WOS关键词 | TREE ROOTS ; REINFORCEMENT ; STABILITY ; STRENGTH ; FOREST ; SLOPE ; VARIABILITY ; RESISTANCE ; GROWTH |
| WOS类目 | Environmental Sciences |
| WOS研究方向 | Environmental Sciences & Ecology |
| 资源类型 | 期刊论文 |
| 条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/216769 |
| 作者单位 | Univ Tehran, Fac Nat Resources, Dept Forestry & Forest Econ, Karaj 3158777871, Iran |
| 推荐引用方式 GB/T 7714 | Abdi, Ehsan,Saleh, Hamid R.,Majnonian, Baris,et al. Soil fixation and erosion control by Haloxylon persicum roots in arid lands, Iran[J],2019,11(1):86-96. |
| APA | Abdi, Ehsan,Saleh, Hamid R.,Majnonian, Baris,&Deljouei, Azade.(2019).Soil fixation and erosion control by Haloxylon persicum roots in arid lands, Iran.JOURNAL OF ARID LAND,11(1),86-96. |
| MLA | Abdi, Ehsan,et al."Soil fixation and erosion control by Haloxylon persicum roots in arid lands, Iran".JOURNAL OF ARID LAND 11.1(2019):86-96. |
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