手法を比較

	デジタル土壌マッピング	土壌水分特性曲線
分野	農学	農学
系統	Process / pipeline	Process / pipeline
提唱年	Late 1990s – early 2000s (formalised ~2003)	1956-1980
提唱者	Multiple contributors; foundational framework by Alex McBratney and colleagues	Willard Robert Gardner, Rollin H. Brooks, Arthur T. Corey
種類	Spatial prediction and mapping pipeline	Empirical soil water retention model
原典	McBratney, A. B., Mendonca Santos, M. L., & Minasny, B. (2003). On digital soil mapping. Geoderma, 117(1–2), 3–52.	Gardner, W. R. (1956). Representation of soil aggregate-size distribution by a logarithmic-normal distribution. Soil Science Society of America Journal, 20(2), 151-153.
別名	DSM, predictive soil mapping, quantitative soil-landscape modelling, geostatistical soil mapping	Water Retention Curve, pF Curve, Characteristic Curve, SWRC
関連	1	3
概要	Digital Soil Mapping (DSM) is a quantitative, data-driven pipeline that predicts the spatial distribution of soil properties and classes across a landscape by statistically linking field observations to environmental covariates — terrain attributes, remote sensing imagery, climate surfaces, and geology layers. The approach replaces or augments traditional expert-drawn soil surveys with reproducible, spatially explicit models, and is applied in agronomy, land management, food security, and environmental assessment.	The soil moisture curve (or soil water retention curve, SWRC) describes the relationship between soil water content and soil matric potential (water tension). It characterizes how tightly water is bound in pores of different sizes: large pores drain at low tensions (wet soils), while smaller pores retain water at high tensions (dry soils). Quantifying this relationship is essential for water balance modeling, unsaturated flow prediction, and assessing plant-available water.