Soil environmental quality is the capacity of a soil to function, within ecosystem and land use boundaries, to sustain biological productivity, maintain environmental quality, and promote plant, animal and human health'. In the long-term, vegetative rehabilitation of mining wastes aims at, as far as possible, the proper ecological integration of the reclaimed area into the surrounding landscape...

Soil erosion is a global environmental problem, and anthropogenic fallout radionuclides offer a promising tool for describing and quantifying soil redistribution on decadal time scales. To date, applications of radioactive fallout to trace upland sediment transport have been developed primarily on lands disturbed by agriculture, grazing, and logging. Here we use Cs to characterize and quantify ...

Terrain characteristics, such as slope gradient, slope aspect, profile curvature, contour curvature computed from digital elevation model (DEM), are among the key inputs to digital soil surveys based on geographic information systems (GIS). These terrain attributes are computed over a neighborhood (spatial extent). The objective of this research was to investigate the combi ed effect of DEM res...

Proxy information is used to stratify larger areas, and then measurements within each of these strata are agCarbon storage in soils is important to forest ecosystems. Moreover, gregated and multiplied by the area of each stratum forest soils may serve as important C sinks for ameliorating excess (Schimel and Potter, 1995). Soil survey maps and laboraatmospheric CO2. Spatial estimates of soil or...

In hydrological and soil erosion modelling at large spatial scales, semi-distributed approaches may use representative hillslope profiles to reproduce landscape variability. Until now, the process of delineating landscape units as homogeneous parts of the landscape with regard to their terrain, vegetation, and soil properties required expert knowledge and familiarity with the study area. In add...

Predicting the hydrologic consequences of biomass cropping systems requires an understanding of how different crops and management practices affect soil hydraulic properties across space and time. To inform such predictions, I investigated the impacts of five biomass cropping systems on the hydraulic properties of soils across a landscape gradient in wet, dry, and average rainfall years. I used...

Urban planners and ecologists have long debated the relationship between the structure of urban landscapes and social activities. There have, however, been very few discussions as to whether any such relationships might depend on the scales of observation. This work applies a hierarchical zoning technique to data from the city of Quito, Ecuador, to examine how relationships between typical spat...

and Applied Analysis 3 TM images MODIS Meteorogical data Other dataset Landuse NDVI Precipitation Temperature Wind DEM Soil Dataset of study area Soil erosion sensitivity Soil desertification sensitivity Landscape unit plaques density Landscape evenness index Land utilization degree composite index Ecological suitability index Land resources utilization degree index Ecological vulnerability in ...

and biological condition of soil (Oades, 1993; Stevenson, 1994). To maintain SOC in agricultural fields, we need The spatial or temporal variability of soil has been extensively to consider its local and global evolution. With respect considered in the literature using either experimental or modeling approaches. However, only a few studies integrate both spatial and to the latter, global warmin...