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An analysis is made of the oil pollution of the Ob river waters using a long-term (1993–2013) hydrochemical monitoring of oil fields in Khanty-Mansi Autonomous Okrug. Contents of oil hydrocarbons (OHC) were determined in 4277 samples from the main Ob channel, and in 7076 samples from its anabranches by using infrared spectrometry. An increase in MAC (0.05 mg/dm3) was observed in 28% of the samples from the main channel, and in 32% from the anabranches. The total percentage of samples with an extremely high (> 50 MAC) and high (30–50 MAC) pollution level made up 0.3% of the samples for the anabranches, and 0.1% for the main channel. Maximum pollution was revealed in the eastern part of Okrug, from its eastern boundary to the mouth of the Trom’egan river which is associated with a considerable number of accidents on the pipelines within the Nizhnevartovskii district. The upper and lower quantiles in the most polluted anabranches, Pasl and Bagras, are 0.03–01.7 and 0.032–0.16 mg/dm3, respectively, whereas in the main Ob channel they vary from 0.022 to 0.065 mg/dm3 (0.4–1.2 MAC). The methods of geoinformatics and mathematical statistics were used to assess a dependence of OHC on the number of pollution sources (well clusters, and the area of oil spills) in zones at different distances from the river channels. By calculating the Spearman correlation coefficients, it was shown that OHC contents are dependent mainly on the number of wells, and on the area of oil spills located at less than 2 km from the channels. 相似文献
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I. Yu. Savin 《Geography and Natural Resources》2014,35(3):284-292
The specific character of soil cover in the territory of the Democratic People’s Republic of Korea (DPRK) is revealed, and the soil interpretation schemes in the key areas are compiled. It is established that the main soil resource for agriculture within the region’s low and middle mountains is provided by areas of weakly developed brown forest soils in the lower parts of slopes as well as by alluvial soils along the valleys of large and medium-sized rivers. Specifically, brown forest soils of slopes are used largely in dry farming and forestry, while soils along river valleys are utilized in rice cultivation. Soils of terraced slopes and rice fields have been transformed anthropogenically to the greatest extent. 相似文献
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An analysis is made of the karst geomorphosystems of the Yucatán Peninsula. It is found that the main factors influencing its formation were climate and ocean level oscillations, tectonic movements, and impact effects. It is established that as a result of an active influence of the Maya civilization on the karst landscape of the peninsula, the geomorphosystems was transformed to the karst-anthropogenic system. The karstic landforms, and also the underground caverns experienced the anthropogenic impact, and the subsurface waters were particularly heavily influenced, which, on the one hand, determined the places of concentration of settlements and were actively consumed by the population, and, on the other, their reserves were replenished at regular intervals as a result of the creation of artificial subsurface water storages. In a further transformation of the karst-anthropogenic system, two stages were additionally identified: dominated by natural karstic processes (after the decline of the Maya civilization), and with a renewed intensification of anthropogenic pressure (1980s–current period). The last transformation stage is distinguished by an extension of the impact to the surface karst as well as to the underground caverns: they are subjected to mechanical destruction with an enhancement in the chemical impact as a result of inputs of polluted runoffs to encompass ever deeper horizons of subsurface waters. It is established that the rates of transformation processes of anthropogenic objects created of limestone are, in general, comparable with the mean rates of natural karstic processes on the neighboring territories: the formation of karrens on Maya steles is generally proceeding at the rate of 0.04 mm/year, while the growth rates of flowstones within urban structures of limestone vary from 0.03 to 0.6 mm/year. 相似文献
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《Geography and Natural Resources》2008,29(3):256-262
An analysis is made of the geographical circumstances and factors of formation of a large urban agglomeration to unite the cities of Irkutsk, Angarsk and Shelekhov in the south of the Irkutsk region. The principles of delineating the agglomeration are formulated, which are used to single out different variants of the urban “Greater Irkutsk” agglomeration. A comparison is made of the characteristics of the agglomeration obtained in the different variants. 相似文献
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《地理学报(英文版)》1999,(4)
ThefoundingoftheChinaEarthScienceSociety(PredecessoroftheGeographicalSocietyofChina)in1909markedthegeographyinChinafromtheclassicalstagetothemodernstage.TheGeographicalSocietyofChinaisplayinganimportantroleinthedevelopmentofgeographyinChina.ThenewstageofthedevelopmentofgeographyhasbeenstartedinChinasincethe1950s.ItischaracterizedbytheestablishmentofinstitutesanddepartmentsofgeographyundertheChineseAcademyofSciencesandProvincialAcademies,attheuniversities,thegrowingupofnumerousyounggeog… 相似文献
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We assessed the level of geomorphological risk associated with the occurrence of erosion processes on the western slope of the Tom’-Yaya interfluve (West-Siberian Plain). We suggest the technique for points-based risk assessment in technogenically modified and naturally occurring geomorphological systems. Using the Luchanovskii area as an example, we identified the zones of increased, moderate and low risk levels. 相似文献
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A. S. Zavadskii A. K. Il’yasov S. N. Ruleva V. V. Surkov L. A. Turykin R. S. Chalov 《Geography and Natural Resources》2013,34(1):26-33
We examine the transformation of a gentle segmental to a meander loop with the result that the city, founded in the 17th century, found itself on the caving bank. Comparison of cartographic materials from different times showed the occurrence of secondary bends on elongated rectilinear wings. Not only did such an evolution of the meanders lead to the caving of the terraced urban bank, but also it involved a likely emergency situation on the underwater crossing of the pipeline, and on other engineering facilities. We ascertained the causes of the ongoing channel deformations; modeling data were used in developing recommendations on meander straightening in order to divert the river away from the city. 相似文献
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A. D. Kalikhman T. P. Kalikhman B. D. Sharastepanov 《Geography and Natural Resources》2011,32(2):172-178
Presented are the results from expedition-based investigations made by the Institute of Geography SB RAS, and an analysis
is made of the economic indices of development of the Okinsky district (Republic of Buryatia), which made it possible to draw
a preliminary conclusion about the formation of the ecological tourism structure on the territory of Gornaya Oka and provide
a rationale for the establishment of the “Gornaya Oka” natural park as a necessary and legislatively supported territory designed
for rational and controlled utilization of tourist and recreational resources. 相似文献
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James B. Elsner 《The Professional geographer》2013,65(4):559-560
Books reviewed: Bassin, Mark, Imperial Visions: Nationalist Imagination and Geographical Expansion in the Russian Far East, 1840 – 1865 Shortridge, James R., Our Town on the Plains: J. J. Pennell's Photographs of Junction City, Kansas, 1893 – 1922 Jakle, John A. and Sculle, Keith A., Fast Food: Roadside Restaurants in the Automobile Age Boeschenstein, Walter, Historic American Towns along the Atlantic Coast McKee, Jesse O., Ethnicity in Contemporary America: A Geographical Appraisal Luciuk, Lubomyr Y., Searching for Place: Ukrainian Displaced Persons, Ottawa, and the Migration of Memory Hausladen, Gary, Places for Dead Bodies Phillips, Richard, Watt, Diane and Shuttleton, David, De-Centering Sexualities: Politics and Representations beyond the Metropolis Goldin, Liliana R., Identities on the Move, Transnational Processes in North America and the Caribbean Basin McDonald, David A., On Borders: Perspectives on International Migration in Southern Africa Fox, Roddy and Rowntree, Kate, The Geography of South Africa in a Changing World Takeuchi, Keiichi, Modern Japanese Geography: An Intellectual History Amery, Hussein A., and Wolf, Aaron T., Water in the Middle East: A Geography of Peace Karl, Thomas R., Nicholls, Neville and Ghazi, Anver, Weather and Climate Extremes: Changes, Variations, and a Perspective from the Insurance Industry Pittman, Blair, Texas Caves 相似文献
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O.G. Savichev 《Geography and Natural Resources》2009,30(2):161-166
Physicochemical calculations of the abundance of a number of minerals and organo-mineral compounds in the river waters of the Ob basin revealed that the river waters throughout a year are able to actively interact with bottom sediments and river loads. The most active interactions occur in areas and during periods with increased moduli of river flow. It is shown that the increase in concentrations of dissolved organic matter in the river waters, including in the case of waste water discharges, is limited to a relatively low solubility of a number of compounds of metals with carbonates and humic acids. 相似文献
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Mark Monmonier 《The Professional geographer》2013,65(2):279-281
Leinbach, Thomas R. and Brunn, Stanley D. (eds.) Worlds of E-Commerce: Economic, Geographical, and Social Dimensions Calthorpe, Peter and Fulton, William The Regional City: Planning for the End of Sprawl Furuseth, Owen J. and Lapping, Mark B. (eds.) Contested Countryside: The Rural-Urban Fringe in North America Sharp, Joanne P. Condensing the Cold War: Reader's Digest and American Identity Gleeson, Brendan and Low, Nicholas (eds.) Governing for the Environment: Global Problems, Ethics, and Democracy Isenberg, Andrew The Destruction of the Bison: An Environmental History, 1750 – 1920 Albert, Donald P., Gesler, Wilbert M. and Levergood, Barbara (eds.) Spatial Analysis, GIS, and Remote Sensing Applications in the Health Sciences Wright, Dawn J. and Bartlett, Darius J. (eds.) Marine and Coastal Geographical Information Systems Jankowski, Piotr and Nyerges, Timothy Geographic Information Systems for Group Decision Making: Towards a Participatory Geographic Information Science Gerber, Rod and Chuan, Goh Kim (eds.) Fieldwork in Geography: Reflections, Perspectives, and Actions Craige, Betty Jean Eugene Odom: Ecosystem Ecologist and Environmentalist Lowenthal, David George Perkins Marsh: Prophet of Conservation Schroeder, Richard Shady Practices: Agroforestry and Gender Practices in The Gambia Lovell, W. George A Beauty that Hurts: Life and Death in Guatemala Lichtenberger, Elisabeth Austria: Society and Regions 相似文献
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XINGKexia GUOHuaicheng SUNYanfeng HUANGYongtai 《地理学报(英文版)》2005,15(1):37-43
Water-quality deterioration and eutrophication of the Lake Dianchi have acquired more and more attention in the last few decades. In this paper, the spatial and temporal eutrophication status of the Lake Dianchi was assessed. The comprehensive trophic state index was chosen to assess the trophic status of the Lake Dianchi in the past 13 years. The result reveals that the trophic condition of Caohai is more serious than that of Waihai. Most of time Caohai was in extremely hypereutrophic state from 1988 to 2000. The trophic condition of Waihai had a worsening tendency from 1988 to 2000. Waihai was in eutrophic state before 1995, but it got in a hypereutrophic state after 1995. It was pointed out that TN and TP were the two biggest contributors of CTSIM in both Caohai and Waihai. 相似文献
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China's policy on ecological compensation (eco-compensation) in watershed eco-systems is of economic,social and environmental significance for China's ecological gov-ernance and protection of natural areas.It involves balancing the interests of regional stakeholders,coordinating the development of regional environments and establishing effec-tive cooperation models,making it a classic topic for geographical research.This study in-troduces the concept of institutional "stickiness" to the theory of politics of scale to analyze the features and mechanisms of the game behavior of government entities in the process of im-plementing watershed eco-compensation in the Xin'an River Basin.Our results show the following:government entities at various levels,including the central,provincial and municipal governments,experienced the three stages of game strategy of competition,cooperation and"coopetition";building a government community of shared interests can promote watershed eco-compensation,and "appropriate intervention" by the central govemment is key to achieving inter-provincial watershed eco-compensation;there was clear institutional stickiness during the transition from a "vertical" model of watershed eco-compensation to a "vertical-horizontal"model,with government entities using policy innovations and social participation to limit and reduce stickiness so as to reshape the watershed eco-compensation system;scalar jumping is the core mechanism that promoted eco-compensation in the study basin,and government entities shaped the discourse on watershed eco-compensation by redistributing powers and capital and creating informal constraints,which promoted the transformation of eco-compensation from a "strong state-weak society" structural model,to a "strong state-strong society" model in the Xin'an River Basin.These results can provide theoretical support for the construction of inter-regional watershed eco-compensation mechanisms,pro-vide a scientific basis for the rational evaluation and guidance of watershed eco-compensation practices,and promote the coordinated and sustainable socioeconomic development of watersheds. 相似文献
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Journal of Geographical Sciences - Analyses of the soil moisture evolution trend and the influence of different types of radiation on soil moisture are of great significance to the simulation and... 相似文献
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Delayed response behaviour commonly occurs in conjunction with changes in riverbed scouring and sediment deposition and is a key component in understanding the intrinsic behaviour of reservoir siltation. Due to the complexity of the riverbed siltation process, the variability in the factors that influence siltation and the limitations of available research methods, the understanding of the delayed response behaviour of the sedimentation process in the Three Gorges Reservoir(TGR) is currently mer... 相似文献
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RICHARD BEDFORD 《New Zealand geographer》1999,55(2):8-24
Research into and teaching on population issues in New Zealand's university geography departments is at a crossroads. A significant cohort of New Zealand population geographers who gained their graduate and post-graduate training during the 1950s and 1960s is rapidly diminishing as a result of retirements and late career shifts. In the much more competitive university environment of the 1990s staff are either not being replaced, or their positions and programmes are being reshaped as part of radical restructuring of the social sciences and humanities. This paper reflects on recent developments in population geography in New Zealand, highlighting the contributions made by three of the country's most prominent researchers and teachers in what is fast becoming a dying field of discourse in university geography departments. The paper concludes on an ambivalent note about prospects for geographers in the era of sub-replacement fertility and the heightened attention that will be accorded to migration processes. 相似文献
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Glen M. MacDonald David F. Porinchu Nicolas Rolland Konstantine V. Kremenetsky Darrell S. Kaufman 《Journal of Paleolimnology》2009,41(1):129-141
Instrumental climate records from the central Canadian treeline zone display a pattern of variation similar to general Northern
Hemisphere temperature trends. To examine whether this general correspondence extends back beyond the instrumental record,
we obtained a sediment core from Lake S41, a small lake in the Northwest Territories of Canada at 63°43.11′ N, 109°19.07′ W.
A radiocarbon-based chronology was developed for the core. The sediments were analyzed for organic-matter content by loss-on-ignition
(LOI), biogenic-silica content (BSi), and chironomid community composition to reconstruct July air temperature and summer
water temperature. The paleolimnological records were compared with records of atmospheric CO2 concentration, solar variability, and hemispheric temperature variations over the past 2000 years. The results of the analyses
suggest that widely-documented long-term variations in Northern Hemisphere temperature associated with radiative forcing,
namely the cooling following the medieval period during the Little Ice Age (LIA), and twentieth century warming, are represented
in the central Canadian treeline zone. There is also evidence of a brief episode of warming during the eighteenth century.
As evidenced by LOI and BSi, the twentieth century warming is typified by increased lake productivity relative to the LIA.
Depending upon the measure, the increased productivity of the twentieth century nearly equals or exceeds that of any other
period in the past 2000 years. In contrast, the rate of chironomid head capsule accumulation decreased and remained low during
the twentieth century. Although the chironomid-inferred temperature reconstructions indicate cooling during the LIA, they
present no evidence of greatly increased temperatures during the twentieth century. Warming during the twentieth century might
have enhanced lake stratification, and the response of the chironomid fauna to warming was attenuated by decreased oxygen
and lower temperatures in the hypolimnion of the more stratification-prone lake.
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Glen M. MacDonaldEmail: |