Issues:
Sections:
Issue 95
GENERAL BIOLOGY
UDK: 574.3(470.67)
ALTITUDINAL-ECTOPIC FEATURES OF GROWTH OF JUNIPERUS OBLONGA M. BIEB. CENOPOPULATIONS IN INNER MOUNTAIN DAGHESTAN
SADYKOVA Gulnara Alilovna
Three spatially distant cenopopulations of Juniperus oblonga M. Bieb. are described on the orographically limited territory of Inner-Mountain Daghestan between the Arakmeer and the Gimri ridges. The conditions of habitats of these cenopopulations differ in altitudes above sea level, exposure of macro- and microslopes and types of communities (dry-steppe juniper, paliurus-sage juniper, mixed-shrub juniper). It has been established that in the conditions of the southwestern macroslope of the Gimry Ridge, favorable conditions for the growth of J. oblonga are formed at post-forest altitudes (more than 1200 m above sea level). With a decrease in altitude above sea level, favorable conditions for growth of juniper are formed only on the northern microslopes below the forest belt, creating impassable thickets together with Paliurus spina-cristii Mill. Juniperus oblonga is not found on the macroslope of the Gimry Ridge below 670 m above sea level. At lower altitudes (610 m above sea level), J. oblonga plants find favorable conditions for growth already on the slope of the eastern exposure of the Arakmeer Ridge as part of thickets of xerophilous shrubs. In the conditions of Inner Mountain Daghestan, the change in exposure of biotope slopes and the altitude levels of growth are reflected in the nature of vegetation, biometric indicators of individuals, the age structure of cenopopulations and lead to a change in the types of communities involving J. oblonga .
Pages: 21 - 25
Date: 23.12.2024