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| Spatial variability of soil organic matter in a gravel-sand mulched jujube orchard at field scale | |
Zhao, Wenju1 ; Cao, Taohong1; Li, Zongli2; Luo, Minqiang3; Su, Yu1
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| 2020-06-08 | |
| 发表期刊 | ARABIAN JOURNAL OF GEOSCIENCES
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| ISSN | 1866-7511 |
| 卷号 | 13期号:12 |
| 摘要 | In agricultural ecosystems, soil organic matter (SOM) is a major determinant and indicator of soil fertility and quality. The objectives of this study were to understand the spatial distribution of SOM and the accuracy of two interpolation methods evaluated: Kriging and inverse distance weighting (IDW) in a gravel-sand mulch of northwest China. We are measuring SOM in 256 soil samples collected from 0 to 10, 10-20, 20-30, and 30-50 cm layers at five sampling scales, 32 x 32, 28 x 28, 24 x 24, 20 x 20, and 16 x 16 m, and three sampling spacings, 4, 8, and 12 m. SOM content decreased with depth in each scale, varying from 2.41 to 5.75 g/kg. The SOM was weakly to moderately variable and has a strong spatial autocorrelation. The standard deviation was small for each soil layer, and the variability was low or weakly moderate, indicating that two interpolation methods were applicable to the entire data set. Kriging interpolation was more accurate than IDW. The distribution of SOM differed in the surface layers at the five sampling scales, which was more uniform as the sampling scale decreased. Eight meter is a reasonable sampling spacing. Through the scales effect and spacing change on SOM for fixed-point monitoring, combing the estimate of SOM to reduce the sampling workload will aid the supply of SOM in gravel-sand mulched fields in arid regions. |
| 关键词 | Gravel-sand mulch Soil organic matter Spatial variation Kriging interpolation Inverse distance weighting interpolation |
| DOI | 10.1007/s12517-020-05465-w |
| 收录类别 | SCIE |
| 语种 | 英语 |
| WOS研究方向 | Geology |
| WOS类目 | Geosciences, Multidisciplinary |
| WOS记录号 | WOS:000541934400002 |
| 出版者 | SPRINGER HEIDELBERG |
| 来源库 | WOS |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | https://ir.lut.edu.cn/handle/2XXMBERH/155165 |
| 专题 | 能源与动力工程学院 |
| 通讯作者 | Zhao, Wenju |
| 作者单位 | 1.Lanzhou Univ Technol, Coll Energy & Power Engn, Lanzhou 730050, Peoples R China; 2.Minist Water Resources, Gen Inst Water Resources & Hydropower Planning &, Beijing 100120, Peoples R China; 3.Jiangxi Water Resources Planning & Design Inst, Nanchang 330029, Jiangxi, Peoples R China |
| 第一作者单位 | 能源与动力工程学院 |
| 通讯作者单位 | 能源与动力工程学院 |
| 第一作者的第一单位 | 能源与动力工程学院 |
| 推荐引用方式 GB/T 7714 | Zhao, Wenju,Cao, Taohong,Li, Zongli,et al. Spatial variability of soil organic matter in a gravel-sand mulched jujube orchard at field scale[J]. ARABIAN JOURNAL OF GEOSCIENCES,2020,13(12). |
| APA | Zhao, Wenju,Cao, Taohong,Li, Zongli,Luo, Minqiang,&Su, Yu.(2020).Spatial variability of soil organic matter in a gravel-sand mulched jujube orchard at field scale.ARABIAN JOURNAL OF GEOSCIENCES,13(12). |
| MLA | Zhao, Wenju,et al."Spatial variability of soil organic matter in a gravel-sand mulched jujube orchard at field scale".ARABIAN JOURNAL OF GEOSCIENCES 13.12(2020). |
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| Zhao-2020-Spatial va（1149KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | 浏览 下载 | |
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