Investigation of Dynamics The Density of Horizontal Cut
of Relief By Gartographic-Space Methods (On The Pattern
of Key Site of Ajinour)
Nabiyev A. A., Mekhbaliyev M. M., Mikailova H. H.
Geographical Faculty, Baku State University
370148 Baku, Z. Khalilov street, 23, Azeerbaijan
Abstract
For research of dynamics the density of horizontal cuts of relief is used the different times maps and space photos.
Character and speed of different times maps and space photos. The character and speed of dynamics of objects and phenomena, mainly is determined by the help of comparison of different times sources. It is t be noted that compared materials must have units of near scale, have common scientific principle of compiling, common detailness, one system, the same language, etc.
Introduction
In research of dynamics the old and modern maps differ on accuracy, scale and principle of drawing up. In the case, according to the expression of A. B. Gedimyn it is necessary to make "the transfer from old cartographic language into the present one".
The density of horizontal dissection of relief created by ravines, balkas, rivers, waterless valleys, talwags, etc. In studied territory it is mainly created by ravine-balka net.
Research methods are results
They dynamics of density of horizontal cut of relief has been studied by us on the example of a key site of Adjinour with the area 448 km
2. The topographical maps dated from 1933, 1934, 1943, 1961, 1972 and space photoplans concerned to 1980 and 1989 on a scale
1: 200 000 were used for researches. The scale research it is brought in scale 1:200 000.
The key site of Adjinour is in a dry subtropical belt in the zone of the transition from the area of Kur depression to the area of the Major Caucasus.
In mountainous territories there are distributed the Territary rock, and around the lake of Adjinour, and along the riverside of Eyrichai Quaternary system. The sait soils predominate around the lake of Adjinour, and in Adjinour nd Saryjin Steppes-clayey, along the riverside of Eyrichai-cleyey and loamy, and on Dashuz range-broken-stone-loamy formation.
The soil cover of the key site is diverse, about ten types of soils are met there. Here and there are seen the appearance of saltbering cleayey rocks. The mountain soils premominate, which are distributed on the Deshuz range. They grey soils are developed in the Adjinour steppe alluvial soils predominate on the north part of the river Eyrichai.
The vegetation cover is not so rich and is presented by meadow steppe and semi steppe plants.
The amount of precipitations is 380 mm. The intensive rains fall from time to time.
The relief of the key site is wavy. On the south around the lake of Adjinour is situated. The mountainous massive with the height of 673 m (not far from the village Churga stretches the Sarychin steppe is situated. The mountain Dashuz with maximum altitude of 648 m (Eyritepe) is located between these steppe and r. Eyrichai. The north border of the key site runs on the river Eyrichai. As a whole of the key site is prevailed the corners of an inclination and 6 slopes of southern exposition. For detailed investigation of the dynamics of horizontal dissection of relief it is necessary to use the remote, mathematic-statistic methods, digital information, means of automatization and computer technics..
With the aim of research of dynamics of density of horizontal dissection of relief we compile the map of density of horizontal dissection of relief on a way of square (P = 16 km
2, areas) in isolines, carried out through 0.2 km
2.
The indication of density of horizontal dissection of relief is calculated on the formulas:
K = L/P
Where "K" is the indication of horizontal dissection of relief, "L"-total length of erosion forms of relief within the square, "P" - area of square.
Let us consider the conditions of horizontal dissection of relief and their dynamics according to separate years.
At the studied territory maximum value of density of horizontal dissection of relief consisted of 0.9 km/km
2. The lake of Adjinour did not existed then. Approximately in ¾ territories the size of density of horizontal dissection of relief was equal to zero. The horizontal dissection was observed only in the northern part or the key site (on the Dasuz range and along the river Eyrichai). At the foothills of the Dashuz range passes the isoline with value 0.2 km/km
2.
