Points:  On-the-go soil sensors are able to map soil texture, organic matter, and pH, along with topography  A multi-sensor system effectively mapped a set of 10 fields across 6 states, delineating variability not detected by USDA soil surveys  A proprietary fuzzy logic system that classifies productivity zones was able to estimate productivity differences  Detailed quantitative soil maps a...

A new multispectral image classification method is presented. The method is based on dividing the Near Infrared “NIR” and Visible Red “VR” scatterplot diagram into regions corresponding to their reflectance values. The best line discriminating the Soil’s components from the vegetated area is recognized by utilizing the least square fitting criterion. The vegetate line which differentiate the fu...

In clayey, swelling and more or less sodic soils, cultivation and seasonal climatic cycles induce variations in soil moisture which in turn cause variations in the soil structure. In particular, when the soil profile is saturated, some soils become impermeable because the soil porosity value does not remain sufficiently high throughout the drainage period to be effective for water movement. In ...

The ecosite unit in Ontario‘s boreal forest ecological land classification system is a polygon of common vegetation type and soil conditions intended to provide a standardized provincial framework to inform meso-scale forestry and planning applications. To determine whether the physical factors used for ecosite classification relate to patterns in ecological function over finer spatial scales, ...

This paper gives a review of established and emerging technologies for the treatment of wastes and soils contaminated by Persistent Toxic Substances which include the Persistent Organic Pollutants. The technologies are classified as biological, physico-chemical, and thermal treatments, describing main unit operations and comparing technical, social and environmental limitations, including some ...

a Department of Environmental Science, Policy, and Management, 130 Mulford Hall, University of California, Berkeley, CA 94720, USA b School of Earth and Space Exploration, Arizona State University, Tempe, AZ 85287, USA c Department of Soil, Water, and Climate, University of Minnesota, 439 Borlaug Hall, 1991 Upper Buford Circle, St. Paul, MN 55108, USA d Department of Earth and Planetary Science...

Soils are routinely sampled and characterized according to genetic horizons (layers), resulting in data that are associated with principal dimensions: location (x,y), depth (z), and property space (p). The high dimensionality and grouped nature of this type of data can complicate standard analysis, summarization, and visualization. The aqp package was developed to address some of these issues, ...

1 [email protected] 2 A special note of thanks to Robert Wilson who performed all of this work during the 2002 summer, and his advisor, Dr. Robert Scholtz, Director of the UltraLab at USC. A further note of thanks to Vulcan Ventures which donated USC's anechoic chamber that was used in conducting all of these measurements.

Papers published in Hydrology and Earth System Sciences Discussions are under open-access review for the journal Hydrology and Earth System Sciences Abstract Predicting discharge in ungauged catchments requires knowledge on the distribution and spatial heterogeneity of hydrological soil properties. Because hydrological soil information is not available on a European scale, we reclassified the S...