209 CUPRINS

UDC: 634.4 (478)
NOTHERN FORESTED STEPPE PLATEAU SOILS ARE A RESOURCE
RESERVATION. Ursu A., Overcenco A. //Buletinul Academiei de Ştiinţe a Moldovei. Ştiinţele
Vieţii. 2011, No 1 (313), p. 149-154.
Grey soils and argilous iluvial chernozems have been formed under oak forests on the
predominant terrains of Northern Plateau. Forest vegetation ensures conservation of the
components and properties of these soils. According to the Law of Natural Territories Fund, these
soils are protected by the state and are included in it as Resource Reservations. Reclamation of
grey forest soils conditions their destruction and dehumi cation.
6 references, 4 tables, 4 photos.
UDC 634.4(478)
HALOMORPHIC SOILS FROM BALTI STEPPE. Ursu A., Overcenco A., Vladimir
P., Marcov I. //Buletinul Academiei de Ştiinţe a Moldovei. Ştiinţele Vieţii. 2011, No 1 (313),
p. 154-160.
Halomorphic soils are one of the natural components of soil cover in the Balti Steppe. In the
past, solonetzes were ameliorated by gypsum treatments and deep tillage, but the ameliorative
effect eventually reduced, therefore, these procedures are recommended to repeat.
Currently, solonetzes are characterized by a low soil-ecological potential, resulting in the
reduced productivity of agricultural lands. Ameliorated solonetzes require special attention and
should be excluded from the arable fund. Solonetzes and hydro-halomorphic soil complexes are
speci c natural components, which need protection.
7 references, 4 tables, 4 photos.
UDC: 556.16 (478.9)
ASSESSMENT OF THE INFLUENCE OF THE HUMAN ACTIVITY TYPES ON
THE ANNUAL SURFACE RUNOFF. Boboc N., Castraveţ T., Melniciuc O. //Buletinul
Academiei de Ştiinţe a Moldovei. Ştiinţele Vieţii. 2011, No 1 (313), p. 160-166.
The present study investigates the processes of runoff change due to the construction
of reservoirs, land use (arable land), and urbanization. The procedures of assessment of the
water volume in lakes using Remote Sensing and Geographic Information Systems have been
analyzed, as well as the feasibility of various methods for evaluation of the arti cial lake impact
on the surface runoff. Analytical relations have been identi ed between the components of
water balance and the morphometric characteristics of the territory, which has allowed runoff
cartographic models to be developed. The paper provides an analysis of the feasibility of different
methods for assessment of the anthropogenic impact on the surface runoff characteristics.
18 references, 5 gures, 2 tables.
UDC: 911.2:551.583.16(498.3+473.1/.2)
SUMMER HEAT EPISODES IN THE CZECH REPUBLIC AND THE REPUBLIC
OF MOLDOVA: A COMPARATIVE ANALYSIS. Overcenco Ala, Potop Vera. //Buletinul
Academiei de Ştiinţe a Moldovei. Ştiinţele Vieţii. 2011, No 1 (313), p. 167-178.
The comparative assessment of the extremely hot summer of 2006 in the Czech Republic
and that of 2007 in the Republic of Moldova as evidence of regional warming has been carried
out based on the 1961-2009 daily temperature records. Heat episodes (heat waves and tropical
days) over a long-term period have been also analyzed. The average number of tropical summer
days has increased by more than 1.5 times in both countries over the past 20 years. The warmest
summers as regards heat wave duration and severity occurred in 1994 in Czechia and in 2007 in
Moldova. It is evident that the signi cant increase of heat episodes during the last two decades
has been caused by the changing climate.
22 references, 3 gures, 4 tables.
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