Soil apparent electrical conductivity and geographically weighted regression for mapping soil
نویسندگان
چکیده
منابع مشابه
Mapping Depth to Argillic Soil Horizons Using Apparent Electrical Conductivity
Maps of apparent electrical conductivity (ECa) of the soil profile are widely used in precision agriculture. A number of ECa sensors are commercially available, each with a unique response function (i.e., the relative contribution of soil at each depth to the integrated ECa reading). Our past research estimated depth to an argillic horizon (i.e., topsoil depth, TD) on claypan soils by fitting e...
متن کاملApparent soil electrical conductivity measurements in agriculture
The field-scale application of apparent soil electrical conductivity (ECa) to agriculture has its origin in the measurement of soil salinity, which is an arid-zone problem associated with irrigated agricultural land and with areas having shallow water tables. Apparent soil electrical conductivity is influenced by a combination of physico-chemical properties including soluble salts, clay content...
متن کاملSoil properties influencing apparent electrical conductivity: a review
The most common method for in situ assessment of soil salinity, namely the electrical conductivity (EC) of the soil solution (ECw), is to measure the apparent electrical conductivity (ECa) and volumetric water content (θ) of the soil and apply measured or predicted ECa(ECw, θ) calibration curves. The water content and electrical conductivity of a soil solution are indeed the major factors affec...
متن کاملComparison of Sampling Strategies for Characterizing Spatial Variability with Apparent Soil Electrical Conductivity Directed Soil Sampling
Spatial variability has a profound influence on a variety of landscape-scale agricultural issues including solute transport in the vadose zone, soil quality assessment, and site-specific crop management. Directed soil sampling based on geospatial measurements of apparent soil electrical conductivity (ECa) is a potential means of characterizing the spatial variability of any soil property that i...
متن کاملField-Scale Electrical Conductivity Mapping for Delineating Soil Condition
water resources and enhancing soil quality (Wallace, 1994). An essential first step to the successful implemenTraditional sampling methods are inadequate for assessing the tation of site-specific management is the evaluation of interrelated physical, chemical, and biological soil properties responsible for variations in agronomic yield and ecological potentials across new technologies at the fi...
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ژورنال
عنوان ژورنال: Precision Agriculture
سال: 2011
ISSN: 1385-2256,1573-1618
DOI: 10.1007/s11119-011-9218-5