Polish Polar Research最新文献_第6页

Environmental aspects of molecular composition of humic substances from soils of northeastern European Russia 俄罗斯欧洲东北部土壤腐殖质分子组成的环境因素

4区地球科学

Polish Polar Research Pub Date : 2023-11-06 DOI: 10.24425/ppr.2020.133009

{"title":"Environmental aspects of molecular composition of humic substances from soils of northeastern European Russia","authors":"","doi":"10.24425/ppr.2020.133009","DOIUrl":"https://doi.org/10.24425/ppr.2020.133009","url":null,"abstract":"Data on the molecular structure of humic substances (HSs) of zonal soils for the southern, middle, northern taiga and southern tundra of northeastern European Russia have been obtained. This was accomplished using solid-state C nuclear magnetic resonance (C NMR) technique. The soils under study vary in the point of genesis and degree of hydromorphism. The impact of environmental factors (temperature and humidity) on qualitative and quantitative composition of humic (HAs) and fulvic acids (FAs) has been determined. Excess moisture significantly affects HS accumulation and HS molecular structure: hydromorphic taiga soils accumulate HSs enriched by unoxidized aliphatic fragments, tundra soils – the ones enriched by carbohydrate fragments. Various conditions of soil genesis predefine the specific character of structural and functional parameters of HSs in the southern taiga to southern tundra soils, as is expressed through the increased portion of labile carbohydrate and amino acid fragments and methoxyl groups within the structure of HSs. The tundra humification is characterized by levelling-off of structural and functional parameters of major classes of specific organic compounds of soils – HAs and FAs.","PeriodicalId":49682,"journal":{"name":"Polish Polar Research","volume":"2014 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135637275","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 7

Dryas aeolian landforms in Arctic deflationary tundra, central Spitsbergen 斯匹次卑尔根岛中部北极紧缩苔原的森林风成地貌

4区地球科学

Polish Polar Research Pub Date : 2023-11-06 DOI: 10.24425/ppr.2020.132569

{"title":"Dryas aeolian landforms in Arctic deflationary tundra, central Spitsbergen","authors":"","doi":"10.24425/ppr.2020.132569","DOIUrl":"https://doi.org/10.24425/ppr.2020.132569","url":null,"abstract":"Aeolian activity is common on ice free areas in regions with permafrost occurrence. Sparse high-Arctic tundra vegetation, modifying surface air flow and sediments transport, influences the generation of individual landforms and their assemblages. Observations were carried in central Spitsbergen (Svalbard), characterized by quasi-continental polar climate conditions with dry summers and common existence of winds velocities above loamy-sandy sediments transportation threshold. Dryas aeolian landforms created from aeolian material trapped by Dryas octopetala dwarf shrub were diagnosed. Main morphogenetic plants are accompanied by Saxifraga oppositifolia and Bistorta vivipara, rounded out with biological soil crust. Small size of semi-circular and semi-elliptic forms (0.25–0.85 m) is related to low type of D. octopetala slowly growing on raised marine terraces. Aeolian sediments are characterised by low level of organic matter content. They exhibit diversified mineralogical composition resulting from variable petrography of source glacial and fluvioglacial covers. Eightpetal mountain avens are a dendroflora species composing phytocoenoses of plant communities related to the end stages of biocoenotic succession. Presented data indicate the reference environmental state for any research on plant cover response in the environment of aeolian activity during climate change.","PeriodicalId":49682,"journal":{"name":"Polish Polar Research","volume":"2001 12","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135637324","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Effects of fuel spills on Arctic soil, 32 years later (Hornsund, Svalbard) 32年后燃料泄漏对北极土壤的影响(霍恩松德，斯瓦尔巴群岛)

IF 1.3 4区地球科学

Polish Polar Research Pub Date : 2023-11-06 DOI: 10.24425/PPR.2019.130900

A. K. Waitkus, B. Waitkus

{"title":"Effects of fuel spills on Arctic soil, 32 years later (Hornsund, Svalbard)","authors":"A. K. Waitkus, B. Waitkus","doi":"10.24425/PPR.2019.130900","DOIUrl":"https://doi.org/10.24425/PPR.2019.130900","url":null,"abstract":"The purpose of the study was to estimate in 2012 range and degree of soil contamination due to local diesel fuel leakage spills that occurred in 1980 and from any subsequent activities in the vicinity of the scientific Polish Polar Station in Hornsund, Svalbard. The area of the study covered the immediate vicinity of station buildings including areas of the 1980’s fuel barrel storage depot and location of current fuel tanks. Results of the study were compared with a similar study performed in 1980. As of 2012, areas potentially contaminated covered 0.9 ha, which was a 50% decrease compared to 1980. The area contaminated with total petroleum hydrocarbons was extremely localized. Spread of petroleum hydrocarbons from 1980’s source of pollution investigated 32 years later showed that petroleum derived products were environmentally mobile. Concentrations of total petroleum hydrocarbons in surface soils of the unsaturated active layer above the permafrost decreased significantly mostly due to surface runoff and dispersion through ephemeral drainages. Concentrations of total petroleum hydrocarbons increased with depth through time in sandy soils on the flat area where the largest 1980’s fuel barrel depot was located.","PeriodicalId":49682,"journal":{"name":"Polish Polar Research","volume":"1 1","pages":""},"PeriodicalIF":1.3,"publicationDate":"2023-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68952460","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

First shark record (Chondrichthyes, Elasmobranchii) from the Paleogene of Spitsbergen, Svalbard 斯瓦尔巴群岛斯匹次卑尔根岛古近系第一个鲨鱼记录(软骨鱼目，板鳃目)

IF 1.3 4区地球科学

Polish Polar Research Pub Date : 2023-11-06 DOI: 10.24425/ppr.2019.128370

T. Mörs, J. Hagström, A. Kaim, K. Hryniewicz

引用次数: 0

Air temperature and water level inferences from northeastern Lapland (69 degrees N) since the Little Ice Age 小冰期以来拉普兰东北部(北纬69度)的气温和水位推断

IF 1.3 4区地球科学

Polish Polar Research Pub Date : 2023-11-06 DOI: 10.24425/PPR.2020.132568

T. Luoto, E. H. Kivilä, B. Kotrys, M. Płóciennik, Marttiina V. Rantala, Liisa Nevalainen

{"title":"Air temperature and water level inferences from northeastern Lapland (69 degrees N) since the Little Ice Age","authors":"T. Luoto, E. H. Kivilä, B. Kotrys, M. Płóciennik, Marttiina V. Rantala, Liisa Nevalainen","doi":"10.24425/PPR.2020.132568","DOIUrl":"https://doi.org/10.24425/PPR.2020.132568","url":null,"abstract":"Independent Arctic records of temperature and precipitation from the same proxy archives are rare. Nevertheless, they are important for providing detailed information on long-term climate changes and temperature-precipitation relationships in the context of large-scale atmospheric dynamics. Here, we used chironomid and cladoceran fossil assemblages to reconstruct summer airtemperature and water-level changes, during the past 400 years, in a small lake located in Finnish Lapland. Temperatures remained persistently cold over the Little Ice Age (LIA), but increased in the 20th century. After a cooler phase in the 1970s, the climate rapidly warmed to the record-high temperatures of the most recent decades. The lake-level reconstruction suggested persistently wet conditions for the LIA, followed by a dry period between ~1910 and 1970 CE, when the lake apparently became almost dry. Since the 1980s, the lake level has returned to a similar position as during the LIA. The temperature development was consistent with earlier records, but a significant local feature was found in the lake-level reconstruction – the LIA appears to have been continuously wet, without the generally depicted dry phase during the 18 and 19 centuries. Therefore, the results suggest local precipitation patterns and enforce the concept of spatially divergent LIA conditions.","PeriodicalId":49682,"journal":{"name":"Polish Polar Research","volume":"41 1","pages":""},"PeriodicalIF":1.3,"publicationDate":"2023-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68952471","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Age of volcanism on Keller Peninsula and assessment of age-constrained volcanic activity on King George Island, West Antarctica 南极洲西部凯勒半岛火山活动的年龄和乔治王岛火山活动年龄限制的评估

4区地球科学

Polish Polar Research Pub Date : 2023-11-06 DOI: 10.24425/ppr.2021.136600

Jerzy Nawrocki, Magdalena Pańczyk, Agata Kozłowska-Roman

引用次数: 4

Molecular-mass distribution of humic substances from Arctic soils according to size exclusion chromatography 用粒径排斥色谱法研究北极土壤中腐殖质的分子质量分布

4区地球科学

Polish Polar Research Pub Date : 2023-11-06 DOI: 10.24425/ppr.2020.134792

Lodygin, Evgeny, Vasilevich, Roman

引用次数: 1

New records of lichenized fungi for Antarctica 南极洲地衣真菌的新记录