Resurrection of Soil Surveys: A case study of the acid sulphate soils of The Gambia. II. Added value from spatial statistics
Resurrection of Soil Surveys: A case study of the acid sulphate soils of The Gambia. II. Added value from spatial statistics
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土壤调查的复兴：冈比亚酸性硫酸盐土壤的案例研究。
DOI：
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发表时间：
1997
期刊：
影响因子：
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通讯作者：
D. Dent
中科院分区：
文献类型：
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作者：
F. Ahmed;D. Dent
抽象的。克里金法用于提供冈比亚河漫滩上一系列土壤特征的详细定量信息。将空间统计应用于具有粗数据点网格的大区域会产生虚假模式，除非该区域首先被划分为土壤地貌测绘单元，每个单元都有独特的空间变化模式。即使将经典土壤调查方法与空间统计相结合，酸性硫酸盐土壤的大短期变异性也意味着单因素图隐藏了大量不确定因素。更稳健的过程是绘制关键特征的临界值出现的概率。
Abstract. Kriging is used to provide detailed quantitative information for a range of soil characteristics across the floodplain of the River Gambia. Application of spatial statistics to a large area with a coarse grid of data points produces spurious patterns unless the area is first partitioned into soil‐geomorphic mapping units, each of which has a unique pattern of spatial variation. Even combining classical soil survey method with spatial statistics, the large short‐range variability of acid sulphate soils means that single factor maps conceal a large element of uncertainty. A more robust procedure is to map the probability of occurrence of critical values of key characteristics.