Évaluation de la tolérance du Thuja occidentalis L. et de huit de ses cultivars aux conditions climatiques du nord-est canadien

2000 ◽  
Vol 80 (3) ◽  
pp. 631-637 ◽  
Author(s):  
J. A. Rioux ◽  
P. Marquis ◽  
C. Richer ◽  
M. P. Lamy
Keyword(s):  
Key Words ◽  
Climatic Conditions ◽  
Climatic Zones ◽  
Thuja Occidentalis

Six successive plantations of Thuja occidentalis L. (from 1985 to 1990) were transplanted in different sites corresponding to different northeast Canadian climatic zones (2 to 5). Five cultivars of this species were planted in 1985 and three other cultivars in 1986. These plants were observed over a 5-yr period to validate the climatic zonal range attributed to the species and to determine the winterhardiness of the cultivars. Winter damage observed each spring indicated that Thuja occidentalis L. can survive in climatic conditions more severe than those suggested in the literature. However, survival varies among the cultivars studied. Woodwardii, Reidii, Wareana and Lutea showed a winterhardiness similar to the species. Pulcherrima showed the most damage. Little Champion, Smaragd and Fastigiata cultivars gave a response between the two other groups. Furthermore, growth in terms of height and width of the species and each cultivar was influenced by the different climatic conditions of each location. Key words: Thuja occidentalis L., hardiness, winter damages, growth, origin, cultivars

Use of Ornamental Trees in Dating of Abandoned Cemeteries on the Example of Thuja Occidentalis and Thuja Orientalis

2012 ◽  
Vol 1 (1) ◽  
pp. 45-50
Author(s):  
Magdalena Opała ◽  
Leszek Majgier
Keyword(s):  
Climatic Conditions ◽  
The Other ◽  
Lake District ◽  
Thuja Occidentalis ◽  
North Eastern ◽  
The 1960S ◽  
Thuja Orientalis ◽  
Ornamental Trees ◽  
Common Tree ◽  
Local Habitat

Abstract Due to the lack of maintenance, abandoned cemeteries are often incorporated into the landscape. In many cases the information about the age of the cemetery is unavailable. To find out the approximate time of the formation of the cemetery the information recorded in the annual tree and shrub rings can be used. One of the most common tree species, planted for ornamental and symbolic purposes on the cemeteries, are Thuja orientalis and Thuja occidentalis. Alien to the Polish flora, these species adapted well to the local habitat and climatic conditions. The paper presents an attempt to apply dendrochronological dating to determine the age of the abandoned cemeteries in the region of the Great Masurian Lakes, part of the Masurian Lake District (north-eastern Poland). The study included five abandoned cemeteries. In total, 15 cores were taken from the trees. After applying the standard dendrochronological method, local chronologies for the studied species were established. The research indicated that the oldest found specimens - over 70 yrs old - are Thuja occidentalis individuals growing at the Słabowo cemetery. At the other sites the specimens of both Thuja species date back to the 1960s and early 1970s. Compared to the historical information regarding the age and origin of the studied objects, thujas growing there are much younger than the age of the cemeteries foundation. The presented method proved to be very helpful in understanding the time of Thuja occidentalis and Thuja orientalis introduction at the investigated cemeteries.

scholarly journals COMPARATIVE ESTIMATION OF RIVER RUNOFF FORMATION IN THE CLIMATIC ZONES OF GORN PAMIR

2020 ◽  
Vol 12 (3) ◽  
pp. 366-372
Author(s):  
Parviz NORMATOV ◽  
◽  
Inom NORMATOV ◽  
Richard ARMSTRONG ◽  
◽  
...  
Keyword(s):  
Statistical Processing ◽  
River Basins ◽  
Climatic Conditions ◽  
Meteorological Conditions ◽  
The State ◽  
Climatic Zones ◽  
River Flows ◽  
Hydrological Characteristics ◽  
Temperature And Precipitation

The research object. The hydrological characteristics of the Gunt and Vanch rivers belonging to the Southwestern and Central climatic zones of the Pamirs and are tributaries of the transboundary Pyanj River are considered. Long-term average values of temperature and precipitation as the main factors affecting the formation of river flows are determined for the period 1944–2016. The state of glaciation in the basins of the respective rivers is estimated. Goal. A comparative assessment of the influence of climatic features and mountain orography on the formation of river flows. Determination of the trend of changes in the climatic conditions of the Gunt and Vanch river basins at different periods of more than 70 years (1944–2016). Research methods. Generalization, systematization of meteorological and hydrological characteristics and determination of their change compared with the base period 1960–1990. Statistical processing of meteorological and hydrological data and establishing a trend of changes in climatic and hydrological characteristics using a differentiated method. Research results. It is shown that the nature of changes in hydrological characteristics, namely the flow of rivers in different climatic zones of the Pamir can differ significantly. On the example of two rivers (Gunt and Vanch) - tributaries of the transboundary Pyanj river, it is shown that the trend of change in the flow of the Gunt river differs from the Vanch river due to the state of glaciation of the river basin. To explain the results the meteorological conditions of the respective river basins and their possible impact on river hydrology were studied. Conclusion. The hydrological characteristics of the Gunt and Vanch rivers in the Pamirs taking into account the meteorological conditions of the respective river basins show that a key factor in improving the state of glaciation and reducing degradation processes, as well as achieving positive trends in the mass balance of glaciers is the presence of sufficient air mass in the glaciation zone. Naturally, this is the key to ensuring a sufficient amount of runoff.

Hygienic assessment of potential ecotoxicological risk of the use of new insecticide spiromesifen in agriculture of Ukraine

2021 ◽  
pp. 62-67
Author(s):  
I.V. Tkachenko ◽  
Keyword(s):  
Chemical Properties ◽  
Terrestrial Ecosystems ◽  
Field Studies ◽  
Climatic Conditions ◽  
Climatic Zones ◽  
Ecotoxicological Risk ◽  
Environmental Objects ◽  
Physico Chemical ◽  
Consumption Rates ◽  
Agricultural Use

Objective: The aim of our work was to study the potential ecotoxicological hazard of a new chemical from the class of tetramic and tetronic acid derivatives - the insecticide spiromesifen, taking into account its physico-chemical properties and impact on the environmental objects. Materials and methods: An assessment of the potential danger of spiromesifen use for ecosystems was carried out on the basis of the calculation of the ecotoxicological hazard (ecotox) by N.N. Melnikov’s method. The field studies were carried out in different agro-climatic zones of Ukraine. The treatment of vineyards and apple trees was carried out at the maximum consumption rates of spiromesifen. Results: According to the literary data and our research, it was found that in the soil-and-climatic conditions of Ukraine, the ecotoxicological risk, when using the new insecticide spiromesifen, is 10,000 times and 7,000 times low than the analogous characteristics of DDT. Ecotox abamectin is 154 times low than ecotox DDT. This makes preparations, based on these substances, more promising and competitive among other pesticides in agricultural use. We can conclude that spiromesifen does not pose a threat to terrestrial ecosystems and health of the population.

scholarly journals Some Medicinal Plants among the Tribes of Chhatarpur District (M.P.) India

1970 ◽  
Vol 16 ◽  
pp. 43-50 ◽  
Author(s):  
Amita Arjariya ◽  
Kalpana Chaurasia
Keyword(s):  
Medicinal Plants ◽  
Health System ◽  
Key Words ◽  
Raw Materials ◽  
Central India ◽  
Climatic Conditions ◽  
Great Promise ◽  
Natural Growth ◽  
Growth Of A Variety ◽  
Herb Species

The Chhatarpur District in central India is home to numerous herb species. The agro-climatic conditions prevailing in the region provide an ideal habitat for the natural growth of a variety of plants and herbs, which provide raw materials for pharmaceutical, phytochemical, food, flavoring and cosmetic industries. The paper provides information on 58 medicinal plants used by the Gond, Bhil and Bediya tribes of Chhatarpur district of Madhya Pradesh, India, for the treatment of various diseases. Traditional medicine remains an integral part of the health system in this area. Medicinal plants of forest origin hold great promise to enhance the health and livelihoods of the forest dwellers. Key words: Ethno medicinal, tribes, medicinal plants, traditional uses, diseases. DOI: 10.3126/eco.v16i0.3472ECOPRINT 16: 43-50, 2009

Analysis of Changes in the Natural and Climatic Conditions of the Functioning of the Construction Industry (Operation of Buildings and Structures) in the Region

2018 ◽  
Vol 931 ◽  
pp. 1031-1036
Author(s):  
Boris A. Ashabokov ◽  
Alexander V. Shapovalov ◽  
Alla A. Tashilova
Keyword(s):  
Construction Industry ◽  
Extreme Values ◽  
Climatic Conditions ◽  
Daily Maximum ◽  
Climatic Zones ◽  
Air Temperatures ◽  
Average Maximum ◽  
European Part Of Russia ◽  
Different Seasons ◽  
Southern Russia

The manifestations of climatic changes on the territory of the south of the European part of Russia are considered. The estimates for the changes in the seasonal and annual average, maximum and minimum air temperatures, in the seasonal and annual sum of precipitation, daily maximum precipitation as well as the dynamics of the number of their extreme values ​​in different climatic zones of southern Russia and in different seasons are obtained. Possible effects of climate change on the functioning of the construction industry in different climatic zones of the region are considered.

scholarly journals Insulation systems for structures on pile supports

2021 ◽  
Vol 263 ◽  
pp. 01010
Author(s):  
Vyacheslav Semenov ◽  
Igor Bessonov ◽  
Ekaterina Zinovieva ◽  
Elizaveta Mednikova
Keyword(s):  
Arctic Region ◽  
Mineral Wool ◽  
Climatic Conditions ◽  
Pile Foundations ◽  
The Arctic ◽  
Frozen Ground ◽  
Climatic Zones ◽  
Floor Structure ◽  
Insulation Systems ◽  
The Arctic Region

Construction on problem soils or in permafrost conditions involves using of pile foundations with a ventilated space under the floor structure. In this case, additional thermal insulation is required under the first-floor structure (above the ventilated space). The aim of research was to develop insulation systems for buildings on pile foundations for different climatic zones, including conditions of the arctic region and other regions with a predominance of ever-frozen ground. With the help of the THERM computer program, the conditions of bidimensional heat interchange in the enclosing structures of a building with pile foundation were simulated. The resulting models were analysed in terms of the thermophysical characteristics of the structures. As a result, the optimal version of the insulation system was chosen, effective both in the climatic conditions of the midland and in the especially cold conditions of Yakutia and Trans-Polar region (The Subarctic). This system included insulation with mineral wool slabs along the facade walls, with extruded foamed polystyrene along the basement part and the floor structure, and with rolled foamed polyethylene (with the formation of a seamless insulation shell) along the ventilated space under the floor structure and above, on top of insulation boards.

scholarly journals Comparative Analysis of Iron content of Momordica charantia L. and Cucumis sativus L. collected from the various Agro Climatic Zones of Maharashtra.

2021 ◽  
Vol 9 (9) ◽  
pp. 919-922
Author(s):  
Sachin Bhagat
Keyword(s):  
Comparative Analysis ◽  
Cucumis Sativus ◽  
Iron Content ◽  
Good Health ◽  
Climatic Conditions ◽  
Momordica Charantia ◽  
Western Ghat ◽  
Cucumis Sativus L ◽  
Climatic Zones ◽  
Agroclimatic Zones

Abstract: Momordica charantia L. and Cucumis sativus L. are excellent fruit vegetables in nature having iron content, as an essential constituent required for good health of humans. The iron content of the vegetables may vary from place to place depending on the soil, rainfall and other climatic conditions prevailing in that place. It was thought necessary to find out whether the environmental conditions in the nine agro-climatic zones of Maharashtra have any impact on the iron content of these fruit vegetables. The fruit vegetables were collected from various places from nine agro-climatic zones of Maharashtra classified based on rainfall, soil type and the vegetation. It was found that fruits of Momordica charantia L. showed comparatively more nutraceutical content than the fruits of Cucumis sativus L. collected in same season. It was also observed that in the nine agro-climatic zones of Maharashtra studied, the fruits of Momordica charantia L collected from Karjat of North Konkan Coastal Zone showed maximum Iron content, while fruits collected from Igatpuri of Western Ghat Zone and Nashik of Western Maharashtra Plain (Transaction 2) zone showed minimum iron content. In case of Cucumis sativus L., fruits collected from Wardha of Central Vidarbha (Moderate rainfall) zone region showed maximum iron content, while fruits collected from Surgana of Sub-montane (Transition 1) Zone showed minimum iron content. Keywords: Nutraceuticals, Momordica charantia L., Cucumis sativus L. Environmental factors, Iron content, Agroclimatic zones of Maharashtra.

scholarly journals TRENDS IN THE DEVELOPMENT OF SOLAR POWER ENGINEERING: "DRY" ABSORPTION THERMOTRANSFORMERS FOR ENVIRONMENTAL ENGINEERING SYSTEMS

2017 ◽  
pp. 15-22
Author(s):  
Maiia Baimuratovna Kulbarakova ◽  
Nikita Sergeevich Piskunov ◽  
Yulia Victorovna Shipulina ◽  
Mikhail Fedorovich Rudenko
Keyword(s):  
Solar Energy ◽  
Renewable Energy Sources ◽  
Climatic Conditions ◽  
Engineering Systems ◽  
Climatic Zones ◽  
Maximum Daily Temperature ◽  
Temperature Changes ◽  
Selective Coating ◽  
New Type ◽  
To Receive

The article deals with solar energy thermotransformers for heat and cold production in the most favorable climatic zones of Russia. The authors give examples of solar energy cyclic thermotransformers operating in working pairs, which are widely used due to very good sorption qualities (alkaline earth salts CaCl2 and SrCl2 (sorbates) and ammonia (refrigerant)). There have been described three main trends in increasing thermotransformers efficiency: using pure sorbents with powder graphite admixture (with growing portion of admixtures heat conductivity ratio increases in SrCl2 to 1.3 times, in CaCl2 ≈ to 4 times); painting insolated surfaces of the thermotransformers with selective coating (working efficiency of such surfaces is 1.8-2 times higher compared to surfaces covered with matt black painting, operational and aesthetic properties of the surface); improving structures of both reactors in absorber-generators, and installations. In the climatic conditions of the Astrakhan Region there have been carried out check studies of a new type of autonomous thermotransformer in a working pair CaCl2 - NH3. There are shown graphs of temperature changes in the plant apparatuses in daily working time: maximum daily temperature of absorber-generator is 120°C, at night - 70°C; recorded minimum temperature was -15°C. The authors state that heat is possible to receive 24 hours a day. Application of such thermotransformers is patented for thermal water treatment plants used for hydrobionts cultivation. The article presents the diagram of operation of a thermotransformer powered from renewable energy sources (solar and wind energy)

scholarly journals Energy and economic analysis of an auditorium’s air conditioning system with heat recovery in various climatic zones

2018 ◽  
Vol 22 (Suppl. 3) ◽  
pp. 933-943 ◽  
Author(s):  
Konstantinos Papakostas ◽  
Ioannis Tiganitis ◽  
Agis Papadopoulos
Keyword(s):  
Energy Consumption ◽  
Air Conditioning ◽  
Heat Recovery ◽  
Electric Energy ◽  
Payback Period ◽  
Climatic Conditions ◽  
Energy Calculation ◽  
Climatic Zones ◽  
Climate Conditions ◽  
Electric Energy Consumption

In many heating, ventilation and air-conditioning (HVAC) applications, heat recovery devices are installed, aiming at reducing energy consumption. Especially in buildings requiring a high percentage of outside air for ventilation, there is a high potential for heat recovery from exhaust air. Climatic conditions are an important parameter which affects the recovered heat and the payback period of the heat recovery device. In this paper, a 250 person auditorium is used as a model to estimate the applicability of an air-to-air fixed-plate heat exchanger installed in the air handling unit of the HVAC system. The application is considered for four cities, representative of climatic zones A, B, C, D of Greece, which also represent typical Mediterranean climate conditions. Zone A, Crete and Southern Greece, is similar to Nicosia (Cyprus) and Palermo (Sicily), Zone B, with Athens, corresponds to Rome (Italy) and coastal Spain, Zone C with Thessaloniki is similar to the Toulon (France) and Split (Croatia) and Zone D, with its continental climate is more like Milan (Italy) and Lyon (France). An energy analysis with the modified bin method energy calculation was performed to calculate (a) the heating and cooling energy that can be recovered, (b) the reduction in HVAC equipment, and (c) the expected payback period. For the specific climatic conditions examined, it was proven that: heating energy consumption decreased by 31 to 40%, depending on occupancy, while electric energy consumption didn?t change notably; the payback period does not exceed 24 months, depending on climate zone and occupancy.

scholarly journals Innovative Solutions for Searching, Rescuing, and Rendering Assistance to Cosmonauts on the Forced Landing Place of the Descent Module Under Extreme Conditions of the Northern Climatic Zone

2019 ◽  
pp. 76-95
Author(s):  
Aleksey Vasilievich Polyakov ◽  
Vitaly Mikhailovich Usov ◽  
Boris Ivanovich Kryuchkov ◽  
Yu.P. Chernyshev ◽  
A.I. Motienko
Keyword(s):  
Unmanned Aerial Vehicles ◽  
Climatic Conditions ◽  
Search And Rescue ◽  
Extreme Conditions ◽  
Emergency Medical Care ◽  
Descent Module ◽  
Climatic Zones ◽  
Aerial Vehicles ◽  
Forced Landing ◽  
Innovative Solutions

The paper considers new approaches to the use of unmanned aerial vehicles (UAVs) and associated technologies of emergency warning under extreme conditions of the northern climatic zones for expanding the search and rescue capabilities in case of the forced landing of the descent module (DM). The paper also analyzes the innovative solutions on the human protection against adverse environmental effects and the means for emergency medical care that are delivered to the landing place of the descent module and allow mitigating risks for surviving under unfavorable climatic conditions prior the evacuation operations begin.

Sign in / Sign up

Export Citation Format

Share Document