Spatial Variability of Soil Organic Carbon in Different Hill-slope Positions in Toshan Area, Golestan Province, Iran: Geostatistical Approaches
文献类型：期刊论文
| 作者 | Abolfazl BAMERI; Farhad KHORMALI; Farshad KIANI; Amir Ahmad DEHGHANI |
| 刊名 | Journal of Mountain Science
 |
| 出版日期 | 2015-11 |
| 卷号 | 12期号:6页码:1422-1433 |
| 关键词 | Geostatistics Loess Soil organic carbon (SOC) Slope position Spatial heterogeneity Topography |
| ISSN号 | 1672-6316 |
| 通讯作者 | Farhad KHORMALI |
| 英文摘要 | Accessibility to organic carbon (OC) budget is required for sustainable agricultural development and ecosystem preservation and restoration. Using geostatistical models to describe and demonstrate the spatial variability of soil organic carbon (SOC) will lead to a greater understanding of this dynamics. The aim of this paper is to present the relationships between the spatial variability of SOC and the topographic features by using geostatistical methods on a loess mountain-slope in Toshan region, Golestan Province, northern Iran. Hence, 234 soil samples were collected in a regular grid that covered different parts of the slope. The results showed that such factors as silt, clay, saturated moisture content, mean weighted diameter (MWD) and bulk density were all correlated to the OC content in different slope positions, and the spatial variability of SOC more to slope positions and elevations. The coefficient of variation (CV) indicated that the variability of SOC was moderate in different slope positions and for the mountain-slope as a whole. However, the higher variability of SOC (CV = 45.6%) was shown in the back-slope positions. Also, the ordinary cokriging method for clay as covariant gave better results in evaluating SOC for the whole slope with the RMSE value 0.2552 in comparison with the kriging and the inverse distance weighted (IDW) methods. The interpolation map of OC for the slope under investigation showed lowering SOC concentrations versus increasing elevation and slope gradient. The spatial correlation ratio was different between various slope positions and related to the topographic texture. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 源URL | [http://ir.imde.ac.cn/handle/131551/11045]  |
| 专题 | 成都山地灾害与环境研究所_Journal of Mountain Science _Journal of Mountain Science-2015_Vol12 No.6 |
| 推荐引用方式 GB/T 7714 | Abolfazl BAMERI,Farhad KHORMALI,Farshad KIANI,et al. Spatial Variability of Soil Organic Carbon in Different Hill-slope Positions in Toshan Area, Golestan Province, Iran: Geostatistical Approaches[J]. Journal of Mountain Science,2015,12(6):1422-1433. |
| APA | Abolfazl BAMERI,Farhad KHORMALI,Farshad KIANI,&Amir Ahmad DEHGHANI.(2015).Spatial Variability of Soil Organic Carbon in Different Hill-slope Positions in Toshan Area, Golestan Province, Iran: Geostatistical Approaches.Journal of Mountain Science,12(6),1422-1433. |
| MLA | Abolfazl BAMERI,et al."Spatial Variability of Soil Organic Carbon in Different Hill-slope Positions in Toshan Area, Golestan Province, Iran: Geostatistical Approaches".Journal of Mountain Science 12.6(2015):1422-1433. |
入库方式： OAI收割
来源：成都山地灾害与环境研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。