Proceedings of the Mongolian Academy of Sciences最新文献_第8页

ESTIMATION OF VERTICAL DUST EMISSION FLUX AT A SITE IN THE MONGOLIAN GOBI DURING A DUST STORM PERIOD 沙尘暴期间蒙古戈壁某站点垂直沙尘排放通量的估算

Proceedings of the Mongolian Academy of Sciences Pub Date : 2018-09-07 DOI: 10.5564/pmas.v58i2.1002

Jugder D

{"title":"ESTIMATION OF VERTICAL DUST EMISSION FLUX AT A SITE IN THE MONGOLIAN GOBI DURING A DUST STORM PERIOD","authors":"Jugder D","doi":"10.5564/pmas.v58i2.1002","DOIUrl":"https://doi.org/10.5564/pmas.v58i2.1002","url":null,"abstract":"A meteorological and dust monitoring tower with 20 m height set up at a Nomgon site in Umnugobi Aimag in the Mongolian Gobi in 2010. The Nomgon monitoring tower equipped with wind speed sensors at 2, 4, 10 and 20 m height above the ground level (AGL), a wind direction sensor at 10 m height, a sonic anemometer to measure turbulent momentum flux at 8 m height and a soil moisture sensor at 5 cm depth. We had a purpose to measure dust concentration of PM10 at two levels using Dust-Trak instruments during an intensive observation period (IOP) of a dust event in spring. A dust storm was expected in the Mongolian Gobi from 30 April to 1 May 2016 and two Dust-Traks were set at 0.9 and 2.95 m heights in the tower during this IOP for measuring PM10. Wind data at 2 and 10 m height, three wind components at 8 m height by a sonic anemometer, soil moisture (volumetric water content) data in 5 cm depth and dust concentrations of PM10 at two levels are used in this study. These data from the sensors and instruments in the tower were used for estimation friction velocity and vertical dust flux at the Nomgon site. In association with a surface cyclone, its frontal system and a trough aloft, the expected dust storm occurred in the Mongolian Gobi during the IOP period. Dust concentrations of PM10 increased during the dust storm period due to raised wind speed in the dry conditions of air and soil. The present study aimed to estimate friction velocity (u*) and vertical dust flux (F) around Nomgon site in the Mongolian Gobi desert during the dust storm period. The estimation results were presented in this paper.","PeriodicalId":32573,"journal":{"name":"Proceedings of the Mongolian Academy of Sciences","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71015156","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

THE EFFECTS OF ENVIRONMENTAL ISSUES ON RESIDENTIAL HOUSE PRICE (IN THE CASE OF ULAANBAATAR CITY) 环境问题对住宅价格的影响（以乌兰巴托市为例）

Proceedings of the Mongolian Academy of Sciences Pub Date : 2018-09-07 DOI: 10.5564/PMAS.V58I2.1011

O. D, Byambatseren Ch

引用次数: 0

BACKGROUND CONCENTRATION OF MICROELEMENTS IN ULAANBAATAR REGIONAL NATURAL SURFACE SOIL 乌兰巴托地区自然表层土壤微量元素本底浓度

Proceedings of the Mongolian Academy of Sciences Pub Date : 2018-09-07 DOI: 10.5564/PMAS.V58I2.1001

Byambasuren Ts, B. Khuukhenkhuu, G. Ochirbat, E. VasilyevaI, E. Shabanova, D. Tsedenbaljir, T. Korolkova

引用次数: 2

DEGRADATION ISSUES OF FESCUE-FORBS RANGELAND IN MOUNTAIN STEPPE 山地草原羊茅草甸退化问题

Proceedings of the Mongolian Academy of Sciences Pub Date : 2018-09-07 DOI: 10.5564/pmas.v58i2.1008

L. Otgontuya, N. Lkhagvajav, M. Ch

{"title":"DEGRADATION ISSUES OF FESCUE-FORBS RANGELAND IN MOUNTAIN STEPPE","authors":"L. Otgontuya, N. Lkhagvajav, M. Ch","doi":"10.5564/pmas.v58i2.1008","DOIUrl":"https://doi.org/10.5564/pmas.v58i2.1008","url":null,"abstract":"The total area of Fescue-forbs rangeland in Mongolia is 10 million hectares, in account of 8.5% of total rangeland area. Fescue-forbs rangeland is the main type of rangeland in mountain steppe. The Mongolian rangeland has degraded for the last decades mainly due to overgrazing and climate change. The main objective of this study is to determine the change of plant community and reduction of abundance and productivity of dominant species Festuca lenensis in different degradation levels. The dominant species and main plant functional groups were completely changed in Fescue-forbs rangeland in compared with three degradation levels. The cover of Festuca lenensis was decreased by 98.6-99.5% and biomass percentage was decreased by 95.3-100% in three different degradation levels compared with no degraded pasture. Regarding the results of species composition, the highest number of species reached in moderately degraded pasture, lowest number of species reached in heavily degraded pasture. The species similarity coefficient=0.45 between slightly and moderately degraded pastures. Heavily degraded pasture was different from other two pastures. Quantity of individual species increased in moderately and heavily degraded pastures compared with slightly degraded site. It has depended on increaser and tolerant plant species, these are Arenaria capillaris, Potentilla acaulis, Artemisia frigida, A.commutata, Chamaerodos erecta and Carex duriuscula. Our study to reveal a degradation process of Fescue-forbs rangeland in mountain steppe of Mongolia.","PeriodicalId":32573,"journal":{"name":"Proceedings of the Mongolian Academy of Sciences","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48175656","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

THE COMBINING ABILITY OF TOMATO VARIATY AND INHERRITANCE OF GUANTITATIVE CHARACTERS 番茄品种的配合力与品质性状的遗传性

Proceedings of the Mongolian Academy of Sciences Pub Date : 2018-09-07 DOI: 10.5564/pmas.v58i2.1009

J Baigalmaa, Myagmarsuren Ya, Narandelger Ts

引用次数: 0

ENVIRONMENTAL STRESS RESISTANCES OF ROOT-NODULE BACTERIA FROM MEDICAGO FALCATE L. 镰刀苜蓿根瘤细菌的环境抗性研究。

Proceedings of the Mongolian Academy of Sciences Pub Date : 2018-09-07 DOI: 10.5564/PMAS.V58I2.1005

Zultsetseg Ch, O. Selitskaya, Z. Gerelmaa, Rentsenkhand Ts

引用次数: 0

ANTIBACTERIAL AND ANTI-YEAST EFFECTS OF SOME ESSENTIAL OILS 几种精油的抗菌和抗酵母作用

Proceedings of the Mongolian Academy of Sciences Pub Date : 2018-09-07 DOI: 10.5564/PMAS.V58I2.1006

R Urjinlham, B. Oyunbileg, O Anumandal, P. Sainbileg, Rentsenkhand Ts

{"title":"ANTIBACTERIAL AND ANTI-YEAST EFFECTS OF SOME ESSENTIAL OILS","authors":"R Urjinlham, B. Oyunbileg, O Anumandal, P. Sainbileg, Rentsenkhand Ts","doi":"10.5564/PMAS.V58I2.1006","DOIUrl":"https://doi.org/10.5564/PMAS.V58I2.1006","url":null,"abstract":"Essential oils from aromatic plants of Ledum palustre L. and Mentha piperita L. were extracted using steam distillation and the antimicrobial effects were evaluated alone and in combinations against food-borne pathogens of Gram-positive and Gram-negative bacteria and food related-yeasts (Bacillus subtilis, Escherichia coli, Saccharomyces cerevisiae, Schizosaccharomyce spombe, and Geotrichum candidum). Essential oils from two aromatic plants used in this study showed the antimicrobial activity against bacteria and yeast, which was found to be concentration dependent. The effects of Ledum palustre L. and Mentha piperita L. plants essential oils against yeast and Gram-negative bacteria at concentrations of 0.5 ul/ml and 0.25 ul/ml extended lag phase or adaptation phase by 48 hours, respectively. Gram-positive bacteria were found to be susceptible to the studied two plants essential oils. When the effects of antimicrobial activity of two essential oils were tested in combination against bacteria and yeast in vitro, the MIC value was in the range of 0.125-0.5 ul/ml and showed synergistic activity against E.coli and additive values against B.subtilis and S.cerevisiae. ","PeriodicalId":32573,"journal":{"name":"Proceedings of the Mongolian Academy of Sciences","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41922084","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

WEIGHT GROWT DYNAMIC OF FIRST GENERATION HYBRID KIDS OF CROSSING THE ALPINE GOATS WITH THE MONGOLIAN NATIVE ONES 高山山羊与蒙古山羊杂交第一代杂交后代体重增长动态

Proceedings of the Mongolian Academy of Sciences Pub Date : 2018-09-07 DOI: 10.5564/pmas.v58i2.1010

P. D, Gerelmaa S, Batsukh T, Beisen B, B. D, G. D., B. D

引用次数: 0

Result of study on developing forest seed region in Mongolia 蒙古国森林种子区开发研究成果

Proceedings of the Mongolian Academy of Sciences Pub Date : 2018-04-20 DOI: 10.5564/PMAS.V58I1.968

Jamyansuren S, Udval B, B. N, Bat-Erdene J, M. Fischer

{"title":"Result of study on developing forest seed region in Mongolia","authors":"Jamyansuren S, Udval B, B. N, Bat-Erdene J, M. Fischer","doi":"10.5564/PMAS.V58I1.968","DOIUrl":"https://doi.org/10.5564/PMAS.V58I1.968","url":null,"abstract":"In foreign countries, motor roads and railroads are usually used as borders of forest seed regions. In the case of Mongolia, this method is not suitable in view of the sparse population, large distribution area of forests and the huge territory of the country. Therefore, this study used topographical features to determine the borders of the seed regions. Satellite images in combination with Digital Elevation Model (DEM) make it possible to define rivers, streams and mountain ridges as the borders of forest seed regions. Overall, we identified 19 seed regions for Siberian larch and 12 regions for Scots pine, 9 regions for Siberian pine, 6 regions for Siberian fir and 9 seed regions for Siberian spruce forests. Due to a lack of genetic-selection studies in Mongolia, these proposed forest seed regions can be considered as a preliminary effort with an opportunity to be updated and improved based on more detailed research results. The forest seed regions and maps will play important role as fundamental material for establishing a permanent forest seed supply based on genetic-selection characteristics of the forests in different regions in Mongolia.","PeriodicalId":32573,"journal":{"name":"Proceedings of the Mongolian Academy of Sciences","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45892200","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Additions to the vascular flora of Mongolia - IV 蒙古维管植物区系的增补——Ⅳ

Proceedings of the Mongolian Academy of Sciences Pub Date : 2017-07-31 DOI: 10.5564/PMAS.V59I2.1218

Urgamal M, G. V, Baasanmunkh Sh, O. B, Darikhand D, Munkh-Erdene T

{"title":"Additions to the vascular flora of Mongolia - IV","authors":"Urgamal M, G. V, Baasanmunkh Sh, O. B, Darikhand D, Munkh-Erdene T","doi":"10.5564/PMAS.V59I2.1218","DOIUrl":"https://doi.org/10.5564/PMAS.V59I2.1218","url":null,"abstract":"The article presents updates on the new species recorded in the “Conspectus of the Vascular Plants of Mongolia” (Urgamal et al. 2014), and three articles published “Additions to the Vascular Flora of Mongolia – I, II, III (2013, 2014, 2016)” listed as new for the Mongolian floristic novelties and reported as well. The aim of this article is to officially report new records for vascular plants from Mongolia, and this includes the data in total, 28 species (with 2 infraspecies) from 19 genera and 12 families. In addition, Cerastium alpinum, Dianthus repens, Draba alpina, Eritrichium tianschanicum, Gastrolychnis violascens, Iris oxypetala, Papaver chakassicum, Papaver lapponicum, Potentilla turczaninowiana, Stellaria depressa (10 species) were newly recorded in the list of vascular flora of Mongolia. The newly added species come under the following families and genera: Caryophyllaceae (5 species), Ranunculaceae (4 species), and Rosaceae (4 species) families and Potentilla (4 species), Geranium (3 species), and Iris (3 species) genera. The most recent additions to the following phyto-geographical regions of Mongolia are: Mongolian Altai (9 species), Khovd (7 species), and Khangai (6 species) regions. At present, 3191 taxa (including 134 subspecies and 34 varieties) of vascular plants, representing over 684 genera from 108 families, 39 orders, 12 classes, includes 5 divisions, and 3 superclades (Ferns, Gymnospermae and Angiospermae) are registered in Mongolia. Since the last conspectus (Urgamal et al. 2014) was published, 1genera, 64 species and subspecies have been newly added to the flora of Mongolia. The newly recorded 5 species are “endemic“and 9 species are “sub-endemic” to Mongolia. Therefore, currently a total of 125 species (3.91%) are “endemic”, and 532 species (16.65%) are “sub-endemic” to the vascular flora of Mongolia, respectively.","PeriodicalId":32573,"journal":{"name":"Proceedings of the Mongolian Academy of Sciences","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2017-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49578368","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 14