scholarly journals The Research of the Radial Growth of the Flora Species Which Do Not Have Special Protection on the South Hillsides of Greater Caucasus

2020 ◽  
Vol 7 ◽  
pp. 1-10
Author(s):  
Prof. RAE. Z.H. Aliyev

The radial growth of the trunks of the following flora species which do not have special protection on the southern hillsides of Greater Caucasus was studied in the article: Georgioan oak- Quercus iberica M.Bieb Common hornbeam - Caprinus betulus L. Common chestnut - Castanea sativa Mill. Black walnut - Juglans nigra L., Heart leaved alder - Alnus subcordata C.A.Mey. During the dendrochronological analyses, the dynamics of growth over the years were analysed based on the distances between the tree rings. The impact of the climatic factors on the growth of the trees was analysed and the ages of tree species were investigated. Based on the dendrochronological historical application, according to the numbers of tree rings, the ages of the trees were defined in the studied species. According to the numbers of tree rings, the oldest type of the rare and scanty flora types which have no special protection was identified as Caprinus betulus L. in the Zagatala region. The tree was taken from Zagatala district, planted in 1944, was 75 years old and had 330 cm diameter. The observation of dendrochronological researches indicates the formation of a new microclimate. It was observed that in the investigated species, radial growth was more intense during matureness, then it was weakened with age. In the comparative analysis, it was observed that the minimum radial growth was in 2010 and 2015, and the maximum growth was between 1973 and 1985 in the Zagatala region

AGROFOR ◽  
2019 ◽  
Vol 4 (3) ◽  
Author(s):  
Mohamed SARMOUM ◽  
Rafael NAVARRO-CERRILLO ◽  
Frédéric GUIBAL ◽  
Fatiha ABDOUN

This work investigates the impact of drought and site characteristics on vitality and radial growth of Atlas cedar (Cedrus atlantica Manetti) in Ouarsenis cedar forests (Algeria). The choice of this zone was dictated by the appearance of the phenomenon of decline since the 1980s and the lack of study on this subject. Our hypothesis seeks to understand how climatic factors interacted with site characteristics affected radial growth and vitality of Atlas cedar. We used the dendroecological approach where 09 populations of Atlas cedar distributed on the two cedars of Ouarsenis (Theniet El Had and Ain Antar) and covering a varied range of environmental conditions (substrate, altitude, exposure) were studied. The climatic signal recorded in ring-width series of Atlas cedar trees was investigated by bootstrapped response function over the period 1936-2010. The results show a good agreement between the individual curves and those of mean site chronologies, which reflects the influence of climatic factors on tree radial growth. Atlas cedar is very sensitive to rainfall fluctuations throughout the year. This sensitivity is more pronounced for populations located at low altitude, on steep slopes and on sand stone or marl substrates. The dry years induced a significant radial growth decline and triggered massive tree mortality, particularly in 1983, 1984, 1988, 1994 and 2002. The vitality of the species seems to be conditioned by the frequency of drought years.


2019 ◽  
Vol 57 (4) ◽  
pp. 1165-1175 ◽  
Author(s):  
A. CARNEIRO-CARVALHO ◽  
R. ANJOS ◽  
A. AIRES ◽  
T. MARQUES ◽  
T. PINTO ◽  
...  

Author(s):  
Х.О. Чотчаев ◽  
О.Г. Бурдзиева ◽  
В.Б. Заалишвили

Геотектонические, литологические и ландшафтно-морфологические особенности территорий, функционирующих туристско-рекреационных комплексов Центрального Кавказа, определяют платформенный характер развития Скифской плиты, южной окраиной вовлеченной совместно с причлененными микроплитами-террейнами (Предкавказская, Бечасынская, Восточно-Кавказская) в горообразовательный процесс Большого Кавказа. Иной характер геологического развития претерпели территории южного склона Большого Кавказа, вовлеченные в горообразовательный процесс как океанические плиты – террейны (Закавказская плита, Южная микроплита – сложенные толщей чередующегося флиша глинистых сланцев с прослоями песчаников, мергелей, известняков). Прижатая к жесткой Скифской плите с юга Закавказской плитой, подпираемой Аравийской платформой, Южная микроплита подверглась интенсивной деформации, глубинным тектоническим проявлениям субширотной ориентировки, являющимся каналами активного проявления эндогенных геодинамических процессов. Создание туристско-рекреационного комплекса на Южном склоне Центрального Кавказа предполагает прогноз темпов геоэкологической эволюции в условиях активной геодинамики и интенсивного проявления опасных геологических процессов. Цель исследований – зонирование интенсивностей уровней геоэкологических нагрузок геодинамических и климатических воздействий для дифференцированного целевого использования соответствующих площадей. В процессе исследований выявлены геодинамические и климатические факторы, характерные для территории и реализовано ранжирование интегральных воздействий на исследуемой территории. Методика заключалась в разбиении территории на элементы площади размерами 4×4 кв. км, учете значимых факторов воздействия на элемент площади и суммировании интенсивностей, определяемых экспертными оценками ранжирования, обусловленных каждым из природных воздействий. В процессе решения задач были определены геодинамические и климатические факторы, характерные для территории; дифференцированы геотектонические и геоморфологические условия их проявления; проведена экспертная оценка интенсивности воздействия каждого фактора по пятибалльной системе и установлен суммарный максимально возможный потенциал воздействия. Результаты исследований стали основой составления соответствующей карты – схемы зонирования исследуемой территории на зоны с интенсивностями, характеризующими различные уровни геоэкологической нагрузки. The geotectonic, lithological and landscape-morphological features of the territories where tourist and recreational complexes are functioning in the Central Caucasus determine the platform nature of the development of the Scythian plate. The southern margin of this plate is involved, together with the attached microplate-terranes (Ciscaucasia, Bechasynskaya, East Caucasian), in the mountain-forming process of the Greater Caucasus. The territories of the southern slope of the Greater Caucasus, involved in the mountain-forming process as oceanic plates - terranes (Transcaucasian plate, South microplate - folded by a layer of alternating flysch of clay shales with interlayers of sandstones, marls, limestones) have undergone a different character of geological development. The Southern microplate is pressed against the rigid Scythian plate from the south by the Transcaucasian plate, supported by the Arabian platform. It has undergone intense deformation, deep tectonic manifestations of sublatitudinal orientation, which are channels for the active manifestation of endogenous geodynamic processes. The creation of a tourist and recreational complex on the southern slope of the Central Caucasus presupposes a forecast of the geoecological evolution rate in conditions of active geodynamics and intensive manifestation of dangerous geological processes. The Aim of the study is the zoning of the intensity levels of the geoecological loads of geodynamic and climatic influences for the differentiated target use of the corresponding areas. In the course of research, geodynamic and climatic factors characteristic for the territory were identified and the ranking of integral impacts on the studied territory was implemented. The methodsconsisted in dividing the territory into area elements of 4 × 4 square km., taking into account the significant factors of influence on the element of the area and summing up the intensities determined by expert estimates of the ranking caused by each of the natural impacts. In the process of solving the problems, the geodynamic and climatic factors characteristic for the territory were determined; differentiated geotectonic and geomorphological conditions of their manifestation; an expert assessment of the intensity of the impact of each factor was carried out according to a five-point system and the total maximum possible impact potential was established. Results of the study became the basis for the compilation of the corresponding map - the zoning scheme of the study area into zones with intensities characterizing different levels of geoecological load


2017 ◽  
Vol 44 (1) ◽  
pp. 240-255 ◽  
Author(s):  
Barbara Sensuła ◽  
Sławomir Wilczyński

Abstract The main aims of these studies were dendrochronological and mass spectrometric analysis of the impact of climate on tree rings width and stable isotopes composition in pine (Pinus sylvestris L.). The conifers were growing in the vicinity of chemical and nitrogen factories in Kędzierzyn-Koźle (Poland) in the period of time from 1920s to 2012 AD. The combined usage of tree ring width and isotopic composition data provides historic records of the environment changes. These data allows identifying the behavior adaptation of pine growing under pollution stress to climate changes. The incremental rhythm of the studied pine populations was not identical, probably due to their different sensitivities to some climatic factors. This study evidences that the isotopic records in tree-rings α-cellulose may be sensitive bio-indicators of the way that the components of air and water may be changed by the trees in response to the climate changes and anthropogenic effects. The water use efficiency may be strongly correlated with variability of the surface temperature that may be due to increase of CO2 emission.


Author(s):  
S. A. Gorbanev ◽  
S. A. Syurin ◽  
N. M. Frolova

Introduction. Due to the impact of adverse working conditions and climate, workers in coal-mining enterprises in the Arctic are at increased risk of occupational diseases (OD).The aim of the study was to study the working conditions, causes, structure and prevalence of occupational diseases in miners of coal mines in the Arctic.Materials and methods. Th e data of social and hygienic monitoring “Working conditions and occupational morbidity” of the population of Vorkuta and Chukotka Autonomous District in 2007–2017 are studied.Results. It was established that in 2007–2017 years, 2,296 ODs were diagnosed for the first time in 1851 coal mines, mainly in the drifters, clearing face miners, repairmen and machinists of mining excavating machines. Most often, the ODs occurred when exposed to the severity of labor, fibrogenic aerosols and hand-arm vibration. The development of professional pathology in 98% of cases was due to design flaws of machines and mechanisms, as well as imperfections of workplaces and technological processes. Diseases of the musculoskeletal system (36.2%), respiratory organs (28.9%) and nervous system (22.5%) prevailed in the structure of professional pathology of miners of coal mines. Among the three most common nosological forms of OD were radiculopathy (32.1%), chronic bronchitis (27.7%) and mono-polyneuropathy (15.4%). In 2017, coal miners in the Arctic had a professional morbidity rate of 2.82 times higher than the national rates for coal mining.Conclusions. To preserve the health of miners of coal mining enterprises, technical measures to improve working conditions and medical interventions aimed at increasing the body’s resistance to the effects of harmful production and climatic factors are necessary.


Forests ◽  
2021 ◽  
Vol 12 (3) ◽  
pp. 334
Author(s):  
Norbert Szymański ◽  
Sławomir Wilczyński

The present study identified the similarities and differences in the radial growth responses of 20 provenances of 51-year-old European larch (Larix decidua Mill.) trees from Poland to the climatic conditions at three provenance trials situated in the Polish lowlands (Siemianice), uplands (Bliżyn) and mountains (Krynica). A chronology of radial growth indices was developed for each of 60 European larch populations, which highlighted the interannual variations in the climate-mediated radial growth of their trees. With the aid of principal component, correlation and multiple regression analysis, supra-regional climatic elements were identified to which all the larch provenances reacted similarly at all three provenance trials. They increased the radial growth in years with a short, warm and precipitation-rich winter; a cool and humid summer and when high precipitation in late autumn of the previous year was noted. Moreover, other climatic elements were identified to which two groups of the larch provenances reacted differently at each provenance trial. In the lowland climate, the provenances reacted differently to temperature in November to December of the previous year and July and to precipitation in September. In the upland climate, the provenances differed in growth sensitivity to precipitation in October of the previous year and June–September. In the mountain climate, the provenances responded differently to temperature and precipitation in September of the previous year and to precipitation in February, June and September of the year of tree ring formation. The results imply that both climatic factors and origin (genotype), i.e., the genetic factor, mediate the climate–growth relationships of larch provenances.


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