Sub-sampling a large physical soil archive for additional analyses to support spatial mapping; a pre-registered experiment in the Southern Nations, Nationalities, and Peoples Region (SNNPR) of Ethiopia
Sub-sampling a large physical soil archive for additional analyses to support spatial mapping; a pre-registered experiment in the Southern Nations, Nationalities, and Peoples Region (SNNPR) of Ethiopia
复制标题
对大型物理土壤档案进行二次采样以进行额外分析以支持空间测绘；
DOI：
10.1016/j.geoderma.2022.116013
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发表时间：
2022
期刊：
影响因子：
6.1
通讯作者：
Alemu R
中科院分区：
文献类型：
--
作者：
Alemu R
从实地取样活动中获得的土壤物质实物档案的价值已得到广泛承认。如果我们想使用档案材料进行新的破坏性分析来支持空间制图等任务，那么就需要一种有效的二次抽样策略，以管理分析成本并保护档案材料。在本文中，我们提出了一种方法来解决这个问题时，目标是空间映射的普通克里金。我们的目标是从埃塞俄比亚土壤信息系统（ESOSIS）调查的南方国家，民族和人民地区（SNNPR）的物理档案进行二次抽样，空间映射的两个变量，硒和碘的特定部分的浓度在土壤中，这还没有被测量。我们使用来自埃塞俄比亚周边地区同源部分的数据来估计这些属性的变差函数，然后根据不同大小的档案的建议子集计算SNNPR中地图的预测误差方差，选择优化空间覆盖标准（包括一些接近的样本对）。在此基础上，我们选择了一个子样本，这是一个预先注册的实验，因为我们已经提出了评估我们方法成功与否的标准，并在从实验室收到子样本材料的分析数据之前发表。随后的一份简短报告将公布结果。预注册试验的使用被广泛推荐并用于包括公共卫生在内的科学领域，我们认为这是促进土壤科学可重复研究的合理策略。
The value of physical archives of soil material from field sampling activities has been widely recognized. If we want to use archive material for new destructive analyses to support a task, such as spatial mapping, then an efficient sub-sampling strategy is needed, both to manage analytical costs and to conserve the archive material. In this paper we present an approach to this problem when the objective is spatial mapping by ordinary kriging. Our objective was to subsample the physical archive from the Ethiopia Soil Information System (EthioSIS) survey of the Southern Nations, Nationalities and Peoples Region (SNNPR) for spatial mapping of two variables, concentrations of particular fractions of selenium and iodine in the soil, which had not been measured there. We used data from cognate parts of surrounding regions of Ethiopia to estimate variograms of these properties, and then computed prediction error variances for maps in SNNPR based on proposed subsets of the archive of different size, selected to optimize a spatial coverage criterion (with some close sample pairs included). On this basis a subsample was selected.This is a preregistered experiment in that we have proposed criteria for evaluating the success of our approach, and are publishing that in advance of receiving analytical data on the subsampled material from the laboratories where they are being processed. A subsequent short report will publish the outcome. The use of preregistered trials is widely recommended and used in areas of science including public health, and we believe that it is a sound strategy to promote reproducible research in soil science.
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影响因子：
7
作者：
Ligowe, I. S.;Phiri, F. P.;Broadley, M. R.
通讯作者：
Broadley, M. R.
影响因子：
2.7
作者：
Deville, JC;Tillé, Y
通讯作者：
Tillé, Y
影响因子：
4.2
作者：
Marchant, B. P.;Lark, R. M.
通讯作者：
Lark, R. M.
影响因子：
5
作者：
Shetaya, W. H.;Young, S. D.;Bailey, E. H.
通讯作者：
Bailey, E. H.
DOI：
--
发表时间：
2015
期刊：
影响因子：
--
作者：
R. Lark;K. Knights
通讯作者：
K. Knights