Predicting active-layer soil thickness using topographic variables at a small watershed scale

Predicting active-layer soil thickness using topographic variables at a small watershed scale

Knowledge about the spatial distribution of active-layer (AL) soil thickness is indispensable for ecological modeling, precision agriculture, and land resource management. However, it is difficult to obtain the details on AL soil thickness by using conventional soil survey method. In this research, the objective is to investigate the possibility and accuracy of mapping the spatial distribution ...

Quantifying Soil Moisture Distribution at a Watershed Scale

Predicting Indicators at Small Scale Using Entropy Econometrics

Statistical information for empirical analysis is very frequently available at a higher level of aggregation than it would be desired. Economic and social indicators by income classes, for example, are not always available for cross-country comparisons, and this problem aggravates when the geographical area of interest is sub-national (regions). In this paper we propose entropy-based methodolog...

Spatial Relation of Apparent Soil Electrical Conductivity with Crop Yields and Soil Properties at Different Topographic Positions in a Small Agricultural Watershed

Use of electromagnetic induction (EMI) sensors along with geospatial modeling provide a better opportunity for understanding spatial distribution of soil properties and crop yields on a landscape level and to map site-specific management zones. The first objective of this research was to evaluate the relationship of crop yields, soil properties and apparent electrical conductivity (ECa) at diff...

برآورد عمق خاک با استفاده از متغیرهای محیطی به‌دست آمده از مدل رقومی ارتفاع و داده‌های سنجش از دور

Soil depth is a major soil characteristic commonly used in distributed hydrological modeling in order to present watershed subsurface attributes. It strongly affects water infiltration and accordingly runoff generation, subsurface moisture storage, vertical and lateral moisture movement, saturation thickness and plant root depth in the soil. The objective of this study is to develop a statistic...