Natural forest, settlement and economical development on Czechoslovak territory. Forest protection policy and the survey of particular forest protected areas. (MS).
The results of mass pair comparisons of the groundwater flow of small rivers of the southern part of the European territory of the USSR are revealed showing considerable differences in the density of forests covering the basins. The growth
of the normal groundwater flow is shown where the forests are dense in comparison with lesser afforestated lands comprising from 4 to 7 mm annually which is 2540 % higher than the flow where the territories lack forests. The minimum of groundwater flow
for a number of years grows where there are forests from 0.32 to 1.89 mm annually (428 %). Thus although the water preserving role of forests can be traced in a number of cases as a whole it is small. (Ed.).
The impact of forests on the overland and base flow is considered, and their role in preserving small rivers from pollution and from becoming shallow. It is shown that trees and shrubs prevent the banks from abrasion and erosion, and also exert
a positive impact on the temperature of the water. Data on the width of protective belts that are provided along the rivers are presented, the qualitative composition of the flow that is being formed in basins with forests of different density is analyzed
. The impact of different species on the volume of the flow and on other elements of the budjet of the basin is estimated. Possible ways of raising the role of forests in preserving rivers are considered in brief. (Ed.).
The forest soils developed in the sandy weathering material of the Liassic limy sandstones in southeastern Belgium have been mapped as argillic brown sands ore, more rarely, as podzolic soils. Chemical and mineralogical analyses make the author
to propose that the brownish or slightly podzolised profiles which are developed in the loessic sands of the Liassic cuesta, are the expression of the post-glacial forest pedogenesis, whereas the underlying argillic horizons are probably inherited from
made by V. V. Ponomarieva on the stronger development of the A horizon under leavel forests than under the spruce ones, is substantiated. (Ed.). Traduction anglaise dans Soviet soil science, 1981, 13, n 5, pp. 15-23.
Results of lysimetric investigations on sod-podzolic soils are discussed for soils under spruce or leaved forests. Soil solutions formed in the upper horizon are shown to be different both in seasonal cycles and in their mean values. The supposition
A survey of soil fund structure in the CSR for the height soil zones of hydromorphic soils, chernozems, brown soils, illimeric podzol soils, brown forest soils and mountain podzol soils. (MS).
Publié en 1978 par le Ministero per l'Agricoltura e le Foreste, cet important atlas analyse toutes les régions italiennes régies par les lois sur les montagnes, composées par les Comunità montane. Le but de cet ouvrage considérable (quatre volumes
Results of four years of observation on six catchments with forest cover, field pattern, field drainage pattern, agricultural settlement influence and over all mixture, in a runoff basin of Trnava river (Bohemian Moravian Highlands). They provide
lands, hay-mowing lands, forests, shrublands, etc.) as well as grassland types, fodder output level. Some measures on improvment of natural pastures are given. (Ed.).
Climatic and pedoclimatic features of the areas of European sod-podzolic, lessivé and brown forest soils are compared. The differences in quantitative pedoclimatic indices, the thermic ones especially, proved to be neteworthy. They account
revealed. (L'Ed.). Traduction anglaise dans Soviet soil science, 1981, 13, n 4, pp. 103-110.