Meadows of the North-Eastern Altai

2002 ◽  
pp. 22-31 ◽  
Author(s):  
T. V. Maltseva ◽  
N. I. Makunina

The North-Eastern Altai is an ultra-humid area with climax vegetation represented by tall-herb fir (Abies sibirica) dark-coniferous forest. Its meadows belong to the class Molinio-Arrhenatheretea. The typical asso­ciation Aegopodio podagrariae—Dactyletum glomeratae originates in the watershed clearings after climax forests whereas ass. Hyperici perforati—Agrostietum giganteaereplaces the previous one under mowing and grazing. The Molinietalia wet meadows are widespread in the river valleys. The meadows of ass. Cirsio heterophylli—Calama­grostietum langsdorffii occur on wet soils in small depressions and along floodplain mire margins, and ass. Ca­rici ovalis—Deschampsietum cespitosae comprises typical floodplain hay-meadows on moist, nutrient-rich soils.

Author(s):  
Aleksander Kołos

Betula humilis Schrank (shrubby birch) is among the most endangered shrub species in Poland. All localities are in the eastern and northern parts of the country, where the species reaches the western border of its geographical range in Europe. Betula humilis is disappearing in Poland due to wetland melioration and shrub succession. Over 80% of the localities described in Poland have not been confirmed in the last 20 years. Five new localities of B. humilis in the North Podlasie Lowland were recorded from 2008 to 2019 in the Upper Nurzec Valley (Fig. 1): 1–1.5 km south-west of Pawlinowo village (in the ATPOL GC7146 plot) and 1.5–2 km north-west of Żuki village (ATPOL GC7155, GC156 and GC166). The population near Pawlinowo (locality 1) is currently composed of ~80 individuals (101 individuals were noted in 2010) and is one of the largest populations in north-eastern Poland. Betula humilis grows there within patches dominated by Salix rosmarinifolia and megaforbs. The population at locality 5 is composed of 18 individuals. At the remaining localities, only 1–4 individuals were found, scattered along drainage ditches surrounded by hay meadows. At some of these localities the species is threatened with extinction. It is suggested to remove competitive trees and shrubs (mainly Populus tremula, Betula pubescens and Salix cinerea) in order to maintain the local populations.


Biologia ◽  
2019 ◽  
Vol 75 (1) ◽  
pp. 53-70
Author(s):  
Igor Goncharenko ◽  
Mykola Kozyr ◽  
Olexander Senchylo

2001 ◽  
pp. 36-42 ◽  
Author(s):  
N. A. Sekretareva

The north-eastern part of the Koryak Highlands be­longs to the tall «stlanik» (prostrate elfin woodland, composed of Pinus pumila and Alnus fruticosa) subzone which corresponds to the subalpine belt of the North-Asian eastern highlands but holds a zonal position in the cis-Beringian areas. Communities of willow scrub are mostly restricted to river valleys here, because the more compe­titively strong mountain pine or alder «stlanik» commu­nities play the major role on mountain slopes and their trains. In the upper reaches of the Dlinnaya River willow scrub composed of Salix alaxensis, S. lanata subsp. richardsonii и S. pulchra with herb ground layers are growing in the riverbed-adjoining floodplain and on the low, periodically flooded river terraces. On the terraces of the upper level communities of Salix krylovii, S. pulchra and Betula nana subsp. exilis with dwarfshrubs and mosses in the ground layers are developed. Willow scrub commu­nities occur more seldom at the mountain slope bottoms or on the slope trains; here they wind along the mountain streams.


Author(s):  
Anna Sambuu ◽  
B. Mongush ◽  
Sh. Mongush

Steppes in Tuva occupy intermountain basins with altitudes of 550-1200 m above sea level, the lower parts of mountain slopes, and high terraces of river valleys. Large massifs of steppes are typical for the Ulugh-Khem and Ubsunur basins. Studies to assess the state of soil and vegetation cover were conducted in the North-Eastern (Tuva) part of the drainless Ubsunur basin in July-August 1997-2020 using the route method. The location of the basin between the boreal landscapes of Siberia and the desert-steppe landscapes of Central Asia is characterized by a variety of landforms, heterogeneity of soil and vegetation cover, and a unique distribution of climatic factors and geological history. The source material was our own data from soil and geobotanical studies and remote materials from different observation periods. Observation data from different survey years were linked to the Landsat satellite image for July-August 1997-2019. Route studies were carried out on the main geomorphological profiles from the southern foothills of the Western and Eastern Tannu-Ola ranges to the coast of oz. Ubsa-Nur (from North to South). Reference soil sections were laid at key sites, morphological descriptions of soil profiles and horizon-based sampling were carried out. Soil samples were taken to determine the humus content, granulometric composition, size and nature of salinity-the main indicators of soil desertification. Observations also covered the Eastern and Western parts of the basin, which revealed the direction of degradation of desolate steppes in different geomorphological positions of the territory, but also with different nature and intensity of anthropogenic impact.


1942 ◽  
Vol 21 (8) ◽  
pp. 315
Author(s):  
Bowen ◽  
Vickery ◽  
Buchanan ◽  
Swallow ◽  
Perks ◽  
...  

Author(s):  
Sergey B. Kuklev ◽  
Vladimir A. Silkin ◽  
Valeriy K. Chasovnikov ◽  
Andrey G. Zatsepin ◽  
Larisa A. Pautova ◽  
...  

On June 7, 2018, a sub-mesoscale anticyclonic eddy induced by the wind (north-east) was registered on the shelf in the area of the city of Gelendzhik. With the help of field multidisciplinary expedition ship surveys, it was shown that this eddy exists in the layer above the seasonal thermocline. At the periphery of the eddy weak variability of hydrochemical parameters and quantitative indicators of phytoplankton were recorded. The result of the formation of such eddy structure was a shift in the structure of phytoplankton – the annual observed coccolithophores bloom was not registered.


Author(s):  
Phi Hung Cuong ◽  
Vu Van Anh

Income is an important indicator for assessing the level of economy development as well as identifying and assessing living standards. The population in Northeast border is poor, facilities are outdated, people’s life is difficult, but it hold great potentials for economic development. However, the region’s biggest challenge today is low living standards and high poverty rate. Differences in income and living standards across regions and strata tend to increase the gap. The sustainability of the trend of income increase and improvement of living standards of the population is not stable. As a result, the development of mountainous areas is dependent on poverty reduction solutions for ethnic minorities through the increase of incomes and improvement of market connectivity for ethnic minorities in mountainous areas.


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