Scaling regimes of local slope versus contributing area in digital elevation models
Four scaling regimes are observed in Digital Elevation Models (DEMs) when the average local slope is calculated for pixels grouped according to the values of the contributing area. Threshold criteria, proposed by various researchers to identify
the extent of the channel network, are examined relative to the slope-area scaling diagram. The AA. are especially interested in examining the relationship between the threshold response of erosion resistance used by Willgoose et al. (1991a) in their model
of landscape evolution and the slope-area scaling oberved in DEM data.
Models for landform development on passive margins. Some implications for relief development in glaciated areas
In this paper, some examples of passive marginal landscapes, taken principally from tropical and other extra-glacial areas (southern Africa, southern Australia, South America and western Africa), are used to provide a comparison with published
observations drawn from glacierized areas. Despite the differences in tectonic and geological settings, such a comparison may assist in the identification of pre-glacial forms and throw some new light on the likely course of denudation in areas subject
The evaluation of accessibility levels in rural areas: the case of Poland
The roles of metropolitan urban areas in the high-consumption society and other geographical issues of contemporary Japan and Poland. Proceedings
and at a personal level, i.e. in terms of people's ability to reach certain functions. The study has four dimensions, between which the data were manipulated: (1) 3 study areas embracing 31 villages; (2) 5 social categories; (3) 22 facilities; and (4) car-using
and non-car using groups. Selected conclusions on proportion of area's population with access to specific facilities is portrayed. - (DG)
Arid area ; Clay mineral ; Forest soil ; Grain size distribution ; Italy ; Mediterranean area ; Pedogenesis ; Soil properties ; Toscana
To that purpose 3 representative soil profiles on phyllite and sandstone under sclerophyllous oak, pine and heathland were selected. Without attempting a budget study for the entire forested area, the hypothesis that decomposing organic matter
Land ownership as a determinant in the formation of residential areas in Arab localities
Arabs ; Built up area ; Ethnic community ; Ethnic composition ; House building ; Israel ; Land ; Land rights ; Landed estate ; Residential choice ; Residential location ; Urbanization ; Village
Evidence for the presence of Quaternary loess-derived soils in the Burren karstic area, Western Ireland
This study verifies or discounts the presence of loess-derived soils in the Burren. Data on particle size, mineralogy and bulk geochemistry are presented for 14 soil samples from 12 sites, including 6 from areas which unpublished studies had
Geoecology of the Norra Storfjället area, northern Sweden
Reconstruction of holocene vegetation change in study area on the leeward side of Caledonian Mountains at 65 deg. N. Climatic change accounts for timberline shifts and has left an impact on the soils. Prehistoric human presence was focused
Counterurbanization ; Netherlands (The) ; Population geography ; Regionalization ; Rural area ; Settlement ; Settlement system ; Zeeland
The central theme of this thesis is the recent development of settlements in a Dutch rural area and the function of settlements for the inhabitants in such areas. The main hypothesis of the study is that because of the processes of regionalisation
The study of the spatial organization of geomorphic processes in mountain areas using GIS
Research generated from a study area in the upper Gallego and Aragon valleys in the central Spanish Pyrenees showed that lithology and types of geoforms are strongly related and than altitude plays a strong role in this correlation. - (DWG)
Applied ecology ; Applied geography ; Budapest ; Environmental management ; Green space ; Hungary ; Town ; Urban area ; Urban policy ; Urbanism
period of this century. After that the municipal policy concerning the maintenance and protection of public parks, green surfaces forests and conservation areas within the metropolitan area is described. - (JS)
The development of irrigated agriculture in the Aral Sea basin determined the replacement of natural desertic ecosystems with agrocenoses over the area of 7.2 million ha. The process that is the most expressed is underflooding, accompanied with soil
salinization, which becomes main ecological factor at some coastal areas. At present the area affected by ecotonization of ecosystems in the Aral region is likely to exceed half of the total region's area.
Temporal and spatial variation in dissolved and solid load years in partial catchment areas of the upper Leine river (southern Lower Saxony)
Surface runoff and solid years were investigated in the catchment areas of the Wendebach, the Garte and the Dramme, south of Goettingen. The main focus of attention was in the Wendebach region. The results indicate the temporal and spatial variation
of dissolved and solid load yields. The morphometric analysis of the catchment areas could provide no explanation of the various runoff patterns. In contrast, the type of the substrate as an time-invariantquantitybhas a corresponding significance for the runoff
Results of the investigations of the balance of solids in the catchment area of the Lainbach in the Northhern Limestone Forealps are presented and compared with the results of comparative measurements in the catchment area of the Kesselbach
(Vorkarwendel). The proportion of erosion by runoff on slopes of the sediment yields of the catchment areas during individual precipitation events varies widely. In the annual balance of solids, erosion in channels and sediment yields predominate over erosion
by runoff on slopes in both catchment areas. Thus measurements prove the formation of V-shaped valleys up to the present day.