Natural forest, settlement and economical development on Czechoslovak territory. Forest protection policy and the survey of particular forest protected areas. (MS).
A further 12 species of tree brave been identified from leaf fossils preserved in terminal Pleistocene-early Holocene lacustrine sediments exposed above the present shore of Lake Bosumtwi. Our earlier finding has been confirmed that forest
was of Dry Semi-deciduous type, similar to the present-day forest of this area. The early Holocene forest may, however, have been more open than its modern counterpart. It is suggested that the relative openness of this forest may have been maintained
by periodic invasion of fire from grasslands that formely bordered the forest. Continuous forest did not become established in the Bosumtwi area until mid-Holocene times (7500-5000 BP).
A quantitative study of the forest floor, litter fall and nutrient return in an oak-conifer forest in Himalaya. I. Composition and dynamics of forest floor
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.).
Patterns of entry and the role of foreign-controlled investments in the forest product sector of British Columbia
) controlled investments in the forest product sector of British Columbia between 1950 and 1977 are examined particularly with respect to the relative importance of alternative means of entry and the nature of post entry investment strategies.
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.).
Computer analysis of multitemporal Landsat data for mapping of land-use forest clearcuts and mires. Methodological studies
forest clear cutting during the period 1975-1979 using digital multi-temporal LANDSAT imageries are also presented. Another study deals with methods to use digitized map information in the multi-date LANDSAT classification process and methods to select