scholarly journals Еdapho-climatic characteristics of Рrecarpathian biotopes with the participation of price populations of species of the genus Рolygonatum Мill.

2021 ◽  
pp. 245-250
Author(s):  
N. I. Riznychuk ◽  
M. M. Mylenka ◽  
O. V. Babak
Keyword(s):  
Cluster Analysis ◽  
Moisture Content ◽  
Climatic Factors ◽  
Humus Content ◽  
Dominant Factor ◽  
Climatic Parameters ◽  
Abiotic Conditions ◽  
Light Levels ◽  
Climatic Characteristics ◽  
Sum Of Active Temperatures

Grouping of research sites according to the set of analyzed edapho-climatic parameters by the method of cluster analysis showed that the dominant factor in the formation of abiotic conditions is the type of habitat. Therefore, characterized the population and ecological characteristics of species of the genus Polygonatum Mill. in the Precarpathians by analyzing the key edapho-climatic factors of the studied habitats, namely the humus content, acidity, moisture content, the sum of active temperatures, light levels and N, P, K.

scholarly journals Viticulture Zoning in Montenegro

2018 ◽  
Vol 75 (1) ◽  
pp. 73 ◽  
Author(s):  
Svetozar SAVIĆ ◽  
Miško VUKOTIĆ
Keyword(s):  
Sensory Evaluation ◽  
Climatic Factors ◽  
Vitis Vinifera L ◽  
Climatic Parameters ◽  
The Individual ◽  
Bodies Of Water ◽  
Physiological Reactions ◽  
Climatic Characteristics

Montenegro’s viticultural regions and sub-regions were defined in the 2007 Law on Wine, based on the country’s empirical, traditional, historical and social heritage. However, during the process of defining these regions and sub-regions, the influence of climatic and soil factors crucial in the determination of dependent characteristics, such as the physiology of the grapevine and the quality of the grapes and wine, was not researched thoroughly enough. This work presents the climatic characteristics of the existing sub-regions, as well as the results of the climate’s impact on the physiological reactions of the most common domestic grape cv. Vranac (Vitis vinifera L.), facilitating a new viticultural zoning in Montenegro. Over a period of 56 years, the following climatic parameters were analysed: air temperature, precipitation, insolation and air humidity. These parameters suggest that all the sub-regions in Montenegro have uniform climatic parameters. The modification of certain climatic parameters is influenced by two large bodies of water – the Adriatic Sea and Lake Skadar – and by altitude. The duration of the individual phases and vegetation of the Vranac grape variety differed only slightly in the different sub-regions. As a reflection of the influence of climatic factors in different locations, Vranac grape and wine was analysed chemically and given a sensory evaluation. The analysed parameters indicate a nearly uniform chemical composition and sensory evaluation of all wines. Wines produced at lower altitudes were distinctive for their superior quality.

scholarly journals Identification of Climatic and Soil Biocenotic Factors Influencing the Height Growth of Lapland Pine in North European Russia

2021 ◽  
Author(s):  
Elena Popova ◽  
Anna E. Koukhta ◽  
Igor O. Popov
Keyword(s):  
Cluster Analysis ◽  
Climatic Factors ◽  
Growth Period ◽  
Height Growth ◽  
Early Summer ◽  
European Russia ◽  
Climatic Parameters ◽  
Growth Indices ◽  
The North ◽  
Pine Trees

Abstract Background: Lapland pine (Pinus sylvestris ssp. lapponica Fr. ex Hartm) is the geographical and climatic ecotype and subspecies of Scots pine. It is widespread in the north of Eurasia. Height growth is interconnected with both climatic parameters and the state of the habitat of pine trees. Methods: Long-term data on height growth indices of Lapland pine (var. nana Pallas (1784)), growing in various humid biogeocenoses of three specially protected natural territories of the North European part of Russia were studied. Also sixteen basic climatic parameters averaged over the growth period of the examined trees were calculated for these regions. The comparison of the values of both different climatic parameters and the height growth of pine stands of various biogeocenoses was made by the method of cluster analysis. Results: It was established that climatic parameters such as the mean daily average temperature in January and the amount of precipitation in the spring and early summer periods had a primary influence on the cluster similarity of the height growth of Lapland pine in the North European Russia. The proximity of soil and biocenotic conditions also influenced the similarity of height growth indices of Lapland pine, but had a lower rank within the two main clusters, distinguished by climatic values. Conclusion: Our studies showed that it is possible to identify the rank influence of the most significant climatic factors and soil-biocenotic conditions on the height growth of the geographical ecotype Lapland pine subspecies with the cluster analysis.

scholarly journals Spatial distribution of Crimean agroecological resources as a factor of variability of the main and secondary metabolites of grapes

2021 ◽  
Vol 39 ◽  
pp. 01001
Author(s):  
Evgeniy Rybalko ◽  
Elena Ostroukhova ◽  
Svetlana Levchenko
Keyword(s):  
Secondary Metabolites ◽  
Sugar Content ◽  
Growing Season ◽  
Cabernet Sauvignon ◽  
Climatic Parameters ◽  
Acidity Index ◽  
The Relationship ◽  
Ripeness Index ◽  
Climatic Characteristics ◽  
Sum Of Active Temperatures

The work is aimed at identifying the relationship between agroecological conditions and the formation of carbohydrate-acid and phenolic grape complexes. The agro-climatic parameters of 14 cv. ‘Cabernet Sauvignon’ industrial vineyards located in five wine-growing regions of Crimea have been determined using the methods of geoinformation and mathematical modeling. According to the similarity of 9 agro-climatic characteristics, the vineyards are united into 6 clusters, significantly different from each other. The dispersion of the main and secondary metabolites of grapes, as well as technological indicators based on them in the harvest from the selected clusters, has been established. According to the combined mass concentration of anthocyanins in berries, potential amount of extractable anthocyanins, anthocyanin extractability, monophenolmonooxygenase activity, glucoacidimetric index and grape ripeness index the selected vineyard clusters are discriminated with Wilks L. = 0.09 at α<0.00001. Sugar content, active acidity index, glucoacidimetric index, and grape ripeness index were found to correlate inversely with the amount of precipitation during the growing season; anthocyanin extractability correlates directly with the Huglin and Winkler indices; monophenolmonooxygenase activity with the sum of active temperatures above 10 °C, Huglin index, total precipitation per year and growing season.

scholarly journals Provenance Trials of the Mexican Spruces in Nursery Conditions: Three Species Endangered by Climatic Variation

2020 ◽  
Vol 3 (1) ◽  
pp. 12
Author(s):  
José Marcos Torres-Valverde ◽  
José Ciro Hernández-Díaz ◽  
Artemio Carrillo-Parra ◽  
Eduardo Mendoza-Maya ◽  
Christian Wehenkel
Keyword(s):  
Cluster Analysis ◽  
Genetic Differentiation ◽  
Local Adaptation ◽  
Quantitative Traits ◽  
Climatic Factors ◽  
Climatic Variation ◽  
Climatic Variables ◽  
Provenance Trials ◽  
Survival And Growth ◽  
Picea Species

The three Mexican spruces’ distributions are fragmented, which could lead to phenological, morphological and genetic differentiation, partially caused by local adaptation. In this study, we examined the effect that climatic variables had on the survival and growth of 5641 Picea seedlings, coming from eight seed provenances of three species and produced in identical nursery conditions. The respective responses of each species and provenance can be considered as a proxy of the genetic differentiation and adaptation of each population. A cluster analysis revealed: (i) significant differences in genetic quantitative traits among the three Picea species and (ii) significant correlations between genetic quantitative traits and climatic factors.

scholarly journals Fuzzy logic device for crop analysing, modeling and forecasting in the Kabardino-Balkarian Republic

2020 ◽  
Vol 15 (2) ◽  
pp. 123-133
Author(s):  
Ruslan M. Bischokov
Keyword(s):  
Meteorological Parameters ◽  
Crop Yields ◽  
Climatic Factors ◽  
Crop Productivity ◽  
Logic Device ◽  
Modeling And Forecasting ◽  
Expected Values ◽  
Predicted Values ◽  
Climatic Characteristics

Using computer fuzzy-logical models based on empirical values of climatic characteristics (rainfall, temperature and humidity) of long-term observations (1955-2018) from meteorological stations in the Kabardino-Balkarian Republic (Nalchik, Baksan, Prokhladny and Terek) and crop yields (winter wheat, spring wheat, corn, sunflower, millet, oats), dependence of crop yields on variations of climatic factors were analyzed and a specific forecast was given. Setting expected values of climatic characteristics in computer model, we received possible values of productivity for the next season. Uniformity assessment (Dixon and Smirnov - Grabbsas criterion), stability (Student and Fischers criterion), statistical importance of parameters of distribution and accidental errors were determined. Originality of the method is in the fact that in the form of input parameters of the model predictors, the previously calculated forecast values of the meteorological parameters for the next agricultural year were used, and at the output, the predicted values of crop productivity were obtained as predictants. Furthermore, recommendations on adoption of management decisions were developed.

CORRELATION DEPENDENCES OF THE BENDING STRENGTH OF POLYMER COMPOSITE MATERIALS MODIFIED IN A MICROWAVE ELECTROMAGNETIC FIELD ON THE MOISTURE CONTENT DURING EXPOSURE IN FULL-SCALE CONDITIONS

2021 ◽  
pp. 3-9
Author(s):  
I. V. Zlobina ◽  
I. S. Katsuba
Keyword(s):  
Electromagnetic Field ◽  
Composite Materials ◽  
Carbon Fiber ◽  
Moisture Content ◽  
Bending Strength ◽  
Climatic Factors ◽  
Experimental Studies ◽  
Three Point Bending ◽  
Treated Carbon ◽  
Control Samples

Experimental studies of the influence of external climatic factors, taking into account exposure, on the change in the bending strength of control and microwave – treated carbon and fiberglass samples in the cured state were performed. An increase in the limit stresses of three – point bending of experimental carbon fiber samples compared to the control ones was found by 7…12 %, and fiberglassby 4…7 %. It is shown that with an increase in exposure to 14 months, the strength of control samples of carbon and fiberglass decreases by an average of 10 %. At the same time, the strength of the prototypes is reduced only by 4.4 %. With an increase in the moisture content of both control and experimental samples, a decrease in their strength is observed. In this case, the linear correlation is average (from– 0.44 to – 0.615). It is established that for experimental samples, the influence of the amount of absorbed moisture on the strength is manifested to a much lesser extent. For carbon fiber, the reduction is 16.6 %, for fiberglass – 12 %.

Soils of the Plio-Pleistocene: do they distinguish types of interglacial?

1988 ◽  
Vol 318 (1191) ◽  
pp. 539-557 ◽  
Keyword(s):  
Climatic Factors ◽  
Soil Development ◽  
Parent Material ◽  
Buried Soils ◽  
Oxygen Isotope Stage ◽  
Soil Features ◽  
Land Surfaces ◽  
Climatic Characteristics ◽  
Mathematical Relations ◽  
Approximate Rate

Soils form on land surfaces by the actions of physical, chemical and biological processes on the lithosphere, and are influenced by climate, parent material, relief, organisms and duration of formation. Remnants of Plio-Pleistocene soils may be buried beneath younger deposits or persist on present land surfaces. Their potential for rigorously differentiating interglacials by climatic characteristics is limited by problems of: (i) precise dating of the beginning and end of soil-forming periods; (ii) distinguishing characteristics attributable to climatic factors from those related to parent material, relief, etc; (iii) calculating mathematical relations between measurable soil features and climatic variables; (iv) diagenetic changes in buried soils; (v) recognition and dating of relict features in unburied soils; (vi) loss of many soils by erosion. Some of these problems may be overcome if sequences of buried soils in periglacial loess deposits are used to compare the climates of successive interglacials in Europe and Asia. With the use of the length of interglacials derived from the oceanic record, the interglacials of the past million years are ranked according to approximate rate of soil development in loess. Two provisional equations relating soil development to time and climate are used; a linear relation probably overestimates the effect of time, and a logarithmic one seems to underestimate it. I tentatively suggest that oceanic oxygen-isotope stage 5e was warmer and wetter than the Holocene, stages 7 and 9 were cooler and drier than 5e, and 13-23 were generally warmer and wetter than 1-11.

scholarly journals Catchment classification by runoff behaviour with self-organizing maps (SOM)

2011 ◽  
Vol 8 (2) ◽  
pp. 3047-3083 ◽  
Author(s):  
R. Ley ◽  
M. C. Casper ◽  
H. Hellebrand ◽  
R. Merz
Keyword(s):  
Cluster Analysis ◽  
Ungauged Catchments ◽  
Self Organizing Maps ◽  
Response Behaviour ◽  
Flow Duration ◽  
Wide Range ◽  
Spatio Temporal ◽  
Flow Duration Curves ◽  
Climatic Characteristics ◽  
Self Organizing

Abstract. Catchments show a wide range of response behaviour, even if they are adjacent. For many purposes it is necessary to characterise and classify them, e.g. for regionalisation, prediction in ungauged catchments, model parameterisation. In this study, we investigate hydrological similarity of catchments with respect to their response behaviour. We analyse more than 8200 event runoff coefficients (ERCs) and flow duration curves of 53 gauged catchments in Rhineland-Palatinate, Germany, for the period from 1993 to 2008, covering a huge variability of weather and runoff conditions. The spatio-temporal variability of event-runoff coefficients and flow duration curves are assumed to represent how different catchments "transform" rainfall into runoff. From the runoff coefficients and flow duration curves we derive 12 signature indices describing various aspects of catchment response behaviour to characterise each catchment. Hydrological similarity of catchments is defined by high similarities of their indices. We identify, analyse and describe hydrologically similar catchments by cluster analysis using Self-Organizing Maps (SOM). As a result of the cluster analysis we get five clusters of similarly behaving catchments where each cluster represents one differentiated class of catchments. As catchment response behaviour is supposed to be dependent on its physiographic and climatic characteristics, we compare groups of catchments clustered by response behaviour with clusters of catchments based on catchment properties. Results show an overlap of 67% between these two pools of clustered catchments which can be improved using the topologic correctness of SOMs.

scholarly journals Effect of relative humidity on evaporation rates in Nabatieh Region

2018 ◽  
Vol 19 (1) ◽  
pp. 59-66
Author(s):  
Nasser Farhat ◽  
Keyword(s):  
Water Stress ◽  
Relative Humidity ◽  
Inverse Relationship ◽  
Climate Changes ◽  
Climatic Factors ◽  
Prevailing Wind ◽  
Climatic Parameters ◽  
Factors Affecting ◽  
Daily Evaporation ◽  
General Climate

Relative humidity affects evaporation, whichisin turn is affected by several climatic parameters. This effect is on the increaseas a result of climate changes, especially increasedtemperature.Nabatiyeh region, insouth Lebanon, was selected for this study, even thoughcomprehensive climaterecords are not available. Instead, data from an experimentalmeteorological station capable of providing all climatic parameters digitally, which includes an evaporation basin of the form A, was used.This study providedexplanations of the general climate in the study area.This includesaverage annual temperature, precipitation and evaporation. Factors affecting relative humiditywere determined.It was found that theevaporationvalueschanged by thechangingdirection of the prevailing wind,andfluctuating higher valueswere recorded in autumn, due to the south-eastern dry winds, which lead to a fluctuation in the amount of daily evaporation.An inverse relationship between relative humidity and evaporationwas observed, with significant correlation between them. The net effect of relative humidity onevaporationwas investigated in this studyby comparing data in two days in which the values of other climatic factors affecting evaporation were the same. It was found that the amount of daily evaporation increased by 80% when the relative humidity declined to 53%.Most likely, in the coming years, the region is moving towards more water stress in light of changes in climatic parameters.

scholarly journals Changes in Vegetation Growth Dynamics and Relations with Climate in Inner Mongolia under More Strict Multiple Pre-Processing (2000–2018)

2020 ◽  
Vol 12 (6) ◽  
pp. 2534 ◽  
Author(s):  
Dong He ◽  
Xianglin Huang ◽  
Qingjiu Tian ◽  
Zhichao Zhang
Keyword(s):  
Air Temperature ◽  
Inner Mongolia ◽  
Climatic Factors ◽  
Vegetation Type ◽  
Response Speed ◽  
Dominant Factor ◽  
Climate Factors ◽  
Climate Type ◽  
Local Climate ◽  
Vegetation Growth

Inner Mongolia Autonomous Region (IMAR) is related to China’s ecological security and the improvement of ecological environment; thus, the vegetation’s response to climate changes in IMAR has become an important part of current global change research. As existing achievements have certain deficiencies in data preprocessing, technical methods and research scales, we correct the incomplete data pre-processing and low verification accuracy; use grey relational analysis (GRA) to study the response of Enhanced Vegetation Index (EVI) in the growing season to climate factors on the pixel scale; explore the factors that affect the response speed and response degree from multiple perspectives, including vegetation type, longitude, latitude, elevation and local climate type; and solve the problems of excessive ignorance of details and severe distortion of response results due to using average values of the wide area or statistical data. The results show the following. 1. The vegetation status of IMAR in 2000-2018 was mainly improved. The change rates were 0.23/10° N and 0.25/10° E, respectively. 2. The response speed and response degree of forests to climatic factors are higher than that of grasslands. 3. The lag time of response for vegetation growth to precipitation, air temperature and relative humidity in IMAR is mainly within 2 months. The speed of vegetation‘s response to climate change in IMAR is mainly affected by four major factors: vegetation type, altitude gradient, local climate type and latitude. 4. Vegetation types and altitude gradients are the two most important factors affecting the degree of vegetation’s response to climate factors. It is worth noting that when the altitude rises to 2500 m, the dominant factor for the vegetation growth changes from precipitation to air temperature in terms of hydrothermal combination in the environment. Vegetation growth in areas with relatively high altitudes is more dependent on air temperature.

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