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Criterion of Completeness of Sustainable Environmental Management 可持续环境管理的完整性标准
IF 0.3 Q4 GEOGRAPHY Pub Date : 2024-07-04 DOI: 10.1134/s1875372824700069
A. K. Cherkashin

Abstract

This article highlights the factors and conditions for the formation of a regime of sustainable development (SD) of a territory with environmental management according to the criterion of completeness of the composition and functioning of the nature–economy–population geographical system of the territory. Completeness is a pass-through indicator of the optimality of systems of various kinds at the minimum and maximum levels of their existence and changes in the process of nature conservation, economic growth, and improvement of society. The degree of completeness is a variant of the evaluation function that distinguishes geosystems of different locations and variable states by a set of interchangeable influencing factors of natural, economic, and social origin and features of local conditions of the geographical environment. All the processes reflect the goal of striving for perfection in the form of completeness and safety of their systemic expression, for the ideal, and for the priority development goal; only when that is achieved will it be possible to overcome SD. The trends of completeness are distinguished as the upper and lower envelope lines (surfaces) of the diversity of the connection of data from field and statistical observations. Controlling additive influences shift the landscape norm of completeness of different locations. It is necessary to take into account special restrictions on the degree of incompleteness and overflow of system qualities. Models and methods of analysis are demonstrated by the example of restoration of forest plantations and the implementation of the investment process in the regions of Russia.

摘 要 本文根据领土自然-经济-人口地理系统的构成和功能的完整性标准,强调了形成领土环境管理可持续发展(SD)制度的因素和条件。完备性是各类系统在自然保护、经济增长和社会改善过程中,在其存在和变化的最低和最高水平上的最优性的传递指标。完备程度是评价函数的一种变体,它通过一系列可互换的自然、经济和社会影响因素以及当地地理环境条件的特征来区分不同地点和不同状态的地理系统。所有过程都反映了追求完美的目标,即系统表达的完整性和安全性、理想和优先发展目标;只有实现了这一点,才有可能克服可持续发展问题。完整性趋势被区分为实地观测和统计观测数据连接多样性的上下包络线(面)。控制附加影响会改变不同地点的完整性景观标准。有必要考虑到对系统质量不完整和溢出程度的特殊限制。分析模型和方法以俄罗斯各地区恢复人工林和实施投资过程为例进行论证。
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引用次数: 0
Ecological and Geographical Characteristics of Pharmacopoeial Medicinal Plants of the Northeastern Transbaikal Orobiome 东北外贝加尔地区药典药用植物的生态和地理特征
IF 0.3 Q4 GEOGRAPHY Pub Date : 2024-07-04 DOI: 10.1134/s1875372824700124
M. V. Bocharnikov, N. B. Leonova, I. M. Miklyaeva

Abstract

This article considers the ecological and geographical features of officinal plant distribution within the highlands of Northeastern Transbaikalia. The concept of ecosystem diversity is used as a methodological basis of the study. According to it, the orobiome presents a key regional unit for the inventory and assessment of mountain biodiversity. Comparative geographic and cartographic methods of analysis of original field data, papers, and maps are applied. We have identified 40 species of pharmacopoeial plants for the Northeastern Transbaikalia orobiome. The taxonomic, biomorphological, ecological, geographic, and altitudinal characteristics have been considered, and the analysis of composition of active substances and use in the treatment of diseases according to the ICD-10 international classification of diseases has been carried out. It has been revealed that the highest number of species are applied when treating diseases of the digestive system, diseases of the circulatory system, and diseases of the respiratory system. Five geographical groups of pharmacopoeial species have been identified, among which species with the Holarctic distributional type prevail. Boreal species predominate among nine ecological–coenotic groups. The coenotic value of pharmacopeial species in vegetation communities of the orobiome is considered. Some species of officinal plants are coenose formers, predominant in the background communities for the belts; they include Sctoch pine, Siberian fir, lingonberry, marsh rosemary, downy birch, and bearberry. The regional and altitudinal features of pharmacopeial species distribution have been revealed. The highest number of species grow on the North Baikal Highlands, while the smallest number are on the Patom Highlands. There are more than 20 species in the mountain–taiga belt and about 5–10 species in the high-mountain belt. A map of communities with the participation of typical species of pharmacopeial plants of resource importance has been compiled. It has been revealed that the greatest diversity of these resources is concentrated on the North Baikal Highlands due to climatic conditions and the geographical location at the junction of biogeographical boundaries. The map can be used to assess the ecosystem potential of the vegetation cover of a poorly explored region. The expediency of further study of the pharmacological properties of local flora species used in traditional medicine, as well as strengthening of measures for the protection of medical plant species, is noted.

摘要 本文探讨了外贝加尔东北部高原地区药用植物分布的生态和地理特征。生态系统多样性的概念被用作研究的方法论基础。根据这一概念,生物群是清查和评估山区生物多样性的一个关键区域单位。在对原始野外数据、论文和地图进行分析时,采用了比较地理和制图方法。我们确定了外贝加尔东北部生物群落的 40 种药典植物。我们考虑了分类学、生物形态学、生态学、地理学和海拔高度特征,并根据 ICD-10 国际疾病分类法分析了活性物质的组成和在疾病治疗中的用途。结果表明,在治疗消化系统疾病、循环系统疾病和呼吸系统疾病时使用的种类最多。已确定药典物种的五个地理分组,其中以全北分布类型的物种居多。在九个生态群中,北方物种占多数。研究考虑了药典物种在大生物群落植被群落中的共生价值。一些药用植物物种是群落形成者,在带状背景群落中占主导地位;它们包括斯克托克松、西伯利亚冷杉、越橘、沼泽迷迭香、绒毛桦和熊果。药食同源物种分布的区域和海拔特征已经显现。生长在北贝加尔高原的物种数量最多,而生长在帕托姆高原的物种数量最少。山地-邛崃山带有 20 多个物种,高山地带约有 5-10 个物种。我们已经绘制了一张具有重要资源价值的药用植物典型物种群落分布图。结果显示,由于气候条件和位于生物地理边界交界处的地理位置,这些资源的最大多样性集中在北贝加尔高原。该地图可用于评估一个探索不足地区植被的生态系统潜力。此外,还指出了进一步研究传统医学中使用的当地植物物种的药理特性以及加强药用植物物种保护措施的紧迫性。
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引用次数: 0
Detection of Land Use and Land Cover Change Using Remote Sensing and GIS in Ba Ria-Vung Tau Province, Vietnam 利用遥感和地理信息系统探测越南巴里哇头省的土地利用和土地覆被变化
IF 0.3 Q4 GEOGRAPHY Pub Date : 2024-03-22 DOI: 10.1134/s1875372823040133
B. B. Thien, V. T. Phuong

Abstract

Changes in land use and land cover (LULC) are among the global changes resulting from human activity that have the biggest impacts on the ecosystem and the surrounding environment. Detecting and mapping changes in LULC in Ba Ria-Vung Tau province, Vietnam is critical for sustainable development, planning, and management. This study applies the supervised classifier maximum likelihood algorithm in ArcGIS 10.8 software to detect changes in LULC observed in the study area in the period 2000–2020 using multivariate satellite data. For each satellite scene, we applied supervised classification and spectral indices (NDVI-Normalized Difference Vegetation Index and NDWI-Normalized Difference Water Index) for the classification and assessment of LULC changes. Areas obtained from Landsat 5 TM for 2000 and 2010 and Landsat 8 OLI for 2020 were checked for accuracy using kappa coefficients of 0.882, 0.891, and 0.915, respectively. The area was classified into five main LULC classes including agriculture, water bodies, forest, settlement, and bare soil/rock. The LULC status and change maps created in ArcGIS 10.8 show a significant change in LULC. The settlement class has increased continuously for 20 years from 128.09 km2 (2000) to 300.30 km2 (2020); the agricultural land class has increased by 124.96 km2 in the period 2000–2020. The remaining three classes, forest, water bodies, and bare soil/rock, all decreased in area during this period. These LULC changes pose a serious threat, impacting and disturbing the environment. The results of this study can be used in management and planning of future land use in the area.

摘要土地利用和土地覆盖(LULC)的变化是人类活动导致的全球变化之一,对生态系统和周围环境的影响最大。检测和绘制越南巴里哇头省土地利用和土地覆被变化图对于可持续发展、规划和管理至关重要。本研究采用 ArcGIS 10.8 软件中的监督分类器最大似然法算法,利用多变量卫星数据检测研究区域 2000-2020 年间观测到的 LULC 变化。对于每个卫星场景,我们采用监督分类和光谱指数(NDVI-归一化差异植被指数和 NDWI-归一化差异水指数)对 LULC 变化进行分类和评估。利用 2000 年和 2010 年大地遥感卫星 5 TM 和 2020 年大地遥感卫星 8 OLI 获得的区域,分别用 0.882、0.891 和 0.915 的卡帕系数检验了准确性。该地区被划分为五大 LULC 等级,包括农业、水体、森林、聚落和裸土/岩石。用 ArcGIS 10.8 绘制的 LULC 状态和变化地图显示,LULC 发生了显著变化。在 2000-2020 年期间,定居类土地面积持续增加了 124.96 平方公里,从 128.09 平方公里(2000 年)增至 300.30 平方公里(2020 年)。其余三个等级,即森林、水体和裸土/岩石,在此期间面积均有所减少。这些土地利用、土地利用变化对环境造成了严重的影响和破坏。这项研究的结果可用于该地区未来土地利用的管理和规划。
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引用次数: 0
Influence of Technogenesis and Geochemistry of Aerosols on the Status of Environment and Public Health in the South of Russia 气溶胶的技术生成和地球化学对俄罗斯南部环境和公众健康状况的影响
IF 0.3 Q4 GEOGRAPHY Pub Date : 2024-03-22 DOI: 10.1134/s1875372823040078
V. V. Dyachenko, V. G. Shemanin, V. V. Vishnevetskaya

Abstract

The results of the soil geochemistry study in the south of Russia, assessment of atmospheric pollution and the population health in some cities of Krasnodar region and Rostov Oblast are considered. During more than 30 years repeated soil sampling of different regions (more than 10 thousand samples), settlements (about 3 thousand samples) was carried out, which allowed to comprehensively assess the state of a large biosphere structure environment, where almost 20% of the Russian population lives. The increase in the level of atmospheric pollution and concentrations of chemical elements in soils was found. The negative impact of aeral pollution on the health of the population was revealed, which leads to an increase in the number of upper respiratory tract diseases. The highest degree of aerosol air pollution in the south of Russia is observed in Novorossiysk. According to the results of three-dimensional analysis, the maximum morbidity and mortality rates of newborns are found in areas with old 1–2-storey buildings, and the minimum—in areas of multi-storey buildings. It is shown that the morbidity of the population decreases as the floor of residence increases. Such distribution of morbidity indicates a high level of aerosol pollution of the atmosphere. To confirm the toxicity of urban air pollution, an ecological and geochemical assessment of the solid part of aerosols in comparison with natural deflationary aerosols has been carried out. Geochemical features of different sources of aerosols in the atmospheric surface layer were revealed. It was found that technogenic aerosols are enriched with a number of chemical elements, but especially intensively with polymetals Ag, Pb, Cu and Zn—elements that are not characteristic of the local geological situation and industrial specifics.

内容提要 本文介绍了俄罗斯南部土壤地球化学研究的结果,以及对克拉斯诺达尔州和罗斯托夫州一些城市的大气污染和居民健康状况的评估。在 30 多年的时间里,对不同地区(1 万多个样本)和居民点(约 3000 个样本)进行了多次土壤采样,从而全面评估了俄罗斯近 20% 人口居住的大型生物圈结构环境的状况。研究发现,大气污染程度和土壤中化学元素的浓度都有所上升。大气污染对居民健康的负面影响已经显现,导致上呼吸道疾病数量增加。在俄罗斯南部,新罗西斯克的气溶胶空气污染程度最高。根据三维分析结果,新生儿发病率和死亡率最高的地区是 1-2 层老式建筑区,最低的是多层建筑区。结果表明,随着住宅楼层的增加,居民的发病率也在降低。这种发病率分布表明大气气溶胶污染程度很高。为了证实城市空气污染的毒性,对气溶胶的固体部分与自然放气气溶胶进行了生态和地球化学评估。研究揭示了大气表层不同来源气溶胶的地球化学特征。研究发现,技术产生的气溶胶富含多种化学元素,尤其是多金属元素 Ag、Pb、Cu 和 Zn,这些元素与当地的地质情况和工业特点不符。
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引用次数: 0
Dynamics of Intracontinental Glaciers of Siberia and East Asia since the Little Ice Age 小冰河时期以来西伯利亚和东亚大陆内冰川的动态变化
IF 0.3 Q4 GEOGRAPHY Pub Date : 2024-03-22 DOI: 10.1134/s187537282304011x
V. M. Plyusnin, A. D. Kitov

Abstract

We present results from a 10-year study of the local features of mountain glacier dynamics in Central Asia—from the latitudes of the middle taiga of Cisbaikalia and Transbaikalia, through the mountains of the steppe zone of Mongolian Altai and the desert zone of China to the cold deserts of the Himalayas. Multitemporal satellite images were interpreted, making it possible to obtain quantitative information on changes in the area and length of glaciers in key areas of the studied mountain territories. These data are linked to climatic parameters, absolute altitude, permafrost, morphology and tectonics of the mountain ridges, and anthropogenic impact. The study revealed a general trend: the retreat of glaciers starting in the 1970s, with an increase in the average annual air temperature in the Northern Hemisphere by 1.4‒1.6°С. Accelerated glacier melting and a reduction in glacier length were observed from 1990 to 2020, when the most significant warming occurred. The following years with above-average temperatures are highlighted: 1990, 1995, 1997, 2002, 2005, 2005, 2007, 2008, 2011, 2012, 2016, 2019, and 2020. This period also witnessed an increase in the area and length of some glaciers studied in 2013‒2015 and in 2021 associated with abnormal winter precipitation in 2012, 2013, and 2020. It was found that in the mountains in the south of Eastern Siberia, the aforementioned years showed a slowdown in the reduction of the area of glaciers, an increase of the number of perennial snow patches, and an increase in the frequency of snow avalanches. It has been revealed that the glaciers in Siberia, Mongolian Altai, and the Altyn-Tag Range retreated from the terminal moraines of the Little Ice Age by an average of 500 m; on the Karlyktag Range, 800‒900 m; and in the Himalayas (Langtang area), from 1 to 4.5 km.

摘要 我们介绍了对中亚地区--从西贝加尔和外贝加尔的中泰加林纬度,到蒙古阿尔泰草原区和中国沙漠区的山脉,再到喜马拉雅山的寒冷沙漠--山地冰川动态的地方特征进行的一项为期十年的研究结果。对多时空卫星图像进行了解读,从而获得了所研究山区主要地区冰川面积和长度变化的定量信息。这些数据与气候参数、绝对高度、永久冻土、山脊形态和构造以及人为影响有关。研究揭示了一个总体趋势:从 20 世纪 70 年代开始,随着北半球年平均气温上升 1.4-1.6°С ,冰川开始后退。从 1990 年到 2020 年,冰川加速融化,冰川长度减少,这一时期的变暖最为显著。以下气温高于平均水平的年份被突出显示:1990、1995、1997、2002、2005、2005、2007、2008、2011、2012、2016、2019 和 2020 年。在此期间,2013-2015 年和 2021 年研究的一些冰川的面积和长度也有所增加,这与 2012、2013 和 2020 年异常的冬季降水有关。研究发现,在东西伯利亚南部山区,上述年份的冰川面积减少速度放缓,常年积雪斑块数量增加,雪崩频率上升。研究表明,西伯利亚、蒙古阿尔泰和阿尔金山-塔格山脉的冰川从小冰期的末端冰碛平均后退了 500 米;卡里克塔格山脉的冰川后退了 800 至 900 米;喜马拉雅山(朗唐地区)的冰川后退了 1 至 4.5 公里。
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引用次数: 0
Predictive Assessment of Socioeconomic Damage to Coastal Areas of Irkutsk Oblast as a Result of Lake Baikal Level Fluctuations 贝加尔湖水位波动对伊尔库茨克州沿海地区社会经济损失的预测评估
IF 0.3 Q4 GEOGRAPHY Pub Date : 2024-03-22 DOI: 10.1134/s1875372823040145
T. I. Zabortceva, G. B. Dugarova, O. V. Evstropieva, O. V. Gagarinova, O. A. Ignatova, P. V. Rogov

Abstract

This paper presents for the first time the results of practice-oriented investigations for determining the magnitude of socioeconomic damage to coastal areas of Lake Baikal as a result of the highest rise of its level (457.85 m according to the Pacific Reference Frame). The study area includes the coastal areas of Baikal and some areas of the Irkutsk reservoir of Irkutsk oblast within the Slyudyansky, Irkutsky, and Olkhonsky administrative districts. When compiling the list of sites falling within the zone of potential submergence, we used the open public database of the Unified State Registry of Real Estate and a package of working large-scale cartographic products and images. Expeditions made it possible to update, correct, and complement the working registry. The list of economic facilities and infrastructure (about 200) falling within the zone of potential submergence, includes line structures, enterprises of social services, and households. A calculation of economic damage to facilities of socioeconomic activity is presented using recommended technique of assessing probable damage from the harmful effect of water and assessing the effectiveness of preventive hydroeconomic measures (as of the year 2006). The amount of damage (to facilities and main sectoral groups) is corrected using the deflator index (as of 2022 in the “construction” position in Irkutsk oblast)). Potential losses (lost profit) are illustrated by the example of recreational activity on the shores of Baikal within the boundaries of Irkutsk oblast. The possible considerable losses have been revealed in the recreational sphere as a result of direct damage to facilities and infrastructure, as well as lost profits due to a loss of attractiveness of coastal areas, including beach zones. A preliminary quantitative assessment of socioeconomic damage to coastal administrative districts of Irkutsk oblast as a result of water level fluctuations in Lake Baikal and the Irkutsk reservoir may well provide a basis for developing program-strategic directions and measures and for seeking managerial decisions of a preventive nature for minimizing negative impacts.

摘要 本文首次介绍了为确定贝加尔湖最高水位上升(根据太平洋参照基准为 457.85 米)对该湖沿岸地区造成的社会经济损失程度而进行的面向实践的调查结果。研究范围包括贝加尔湖沿岸地区和伊尔库茨克州伊尔库茨克水库的斯柳迪安斯基、伊尔库茨基和奥尔洪斯基行政区的部分地区。在编制属于潜在淹没区的遗址清单时,我们使用了国家不动产统一登记处的开放式公共数据库以及一套正在使用的大比例尺制图产品和图像。通过考察,我们对工作登记册进行了更新、更正和补充。可能淹没区域内的经济设施和基础设施清单(约 200 个)包括线路结构、社会服务企业和家庭。社会经济活动设施的经济损失计算采用了建议的技术,即评估水的有害影响可能造成的损失和评估预防性水文经济措施的有效性(截至 2006 年)。损失额(对设施和主要部门群体的损失额)使用平减指数(截至 2022 年伊尔库茨克州 "建筑 "部门)进行修正。)以伊尔库茨克州境内贝加尔湖畔的娱乐活动为例,说明了潜在的损失(利润损失)。由于设施和基础设施受到直接破坏,娱乐活动可能会遭受巨大损失,同时,由于沿海地区(包括海滩区)失去吸引力,也会造成利润损失。对贝加尔湖和伊尔库茨克水库水位波动给伊尔库茨克州沿海行政区造成的社会经济损 失进行初步定量评估,可以为制定计划战略方向和措施以及寻求预防性管理决策提供依据, 从而最大限度地减少负面影响。
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引用次数: 0
Geographical Objects as Systems: Adequate Properties and Functions 作为系统的地理物体:适当的属性和功能
IF 0.3 Q4 GEOGRAPHY Pub Date : 2024-03-22 DOI: 10.1134/s187537282304008x
V. B. Korobov, B. I. Kochurov, A. S. Lokhov, A. G. Tutygin

Abstract

The concept of a “system” is analyzed. The basic properties of systems are established. It is revealed that all its elements must be interrelated and be in interaction; the system interacts with the external environment as a whole, and division in it occurs from whole to parts. It is concluded that with respect to geographical objects, these requirements are too stringent, because then there arises the need for mandatory implementation of all conditions inherent in systems. And this is not always possible, because the realization of goals in accordance with which the object is formed may require consideration of independent factors. It is shown that not all geographical and related objects—sociogeographical and geoecological—meet the requirements on classical systems, because some (and sometimes all) of their components (or influencing factors) are not mutually dependent. A virtual example of a problem is given, namely, selection of the optimal location of an object out of several alternatives, consisting of several groups of factors, illustrating the absence of direct links between some of the components of the object. It is proposed to call such objects “nonsystem” objects. In contrast to systems, for them it is possible to form the structure from the bottom up, from particular to general, combining, if necessary, the components of the object into groups. This makes it possible to consistently complicate the object of research as necessary. At the same time, a number of factors, such as seasonal factors, can change their importance over time, which leads to the transition of objects from the “system” to the “nonsystem” state, and vice versa. Factors the influence of which is spatially limited can lead to similar consequences. A graphical interpretation of the concepts of “system” and “nonsystem object” provided in the form of oriented graphs, the edges of which represent groups of components (influencing factors). With such an approach, systems can be considered as a special case of objects in which all components are interrelated. At the same time, systems can be components of complex nonsystem objects.

摘要 分析了 "系统 "的概念。确定了系统的基本属性。它揭示了系统的所有要素必须是相互关联和相互作用的;系统作为一个整体与外部环境相互作用,并从整体到部分进行划分。结论是,就地理对象而言,这些要求过于严格,因为这样就需要强制执行系统的所有固有 条件。而这并不总是可能的,因为要实现形成对象的目标,可能需要考虑独立的因素。事实证明,并非所有地理和相关对象--社会地理和地理生态--都符合经典系统的要求,因为它们的某些(有时是全部)组成部分(或影响因素)并不是相互依存的。我们给出了一个问题的虚拟例子,即从由几组因素组成的多个备选方案中选择一个对象的最佳位置,说明对象的某些组成部分之间没有直接联系。建议将这类物体称为 "非系统 "物体。与系统不同的是,它们可以自下而上、从特殊到一般地形成结构,必要时将对象的各个 组成部分组合成组。这样就可以根据需要不断地将研究对象复杂化。同时,一些因素(如季节性因素)的重要性会随着时间的推移而发生变化,从而导致研究对象从 "系统 "状态过渡到 "非系统 "状态,反之亦然。在空间上影响有限的因素也会导致类似的后果。对 "系统 "和 "非系统对象 "这两个概念的图解是以定向图的形式提供的,定向图的边代表各组元件(影响因素)。采用这种方法,系统可被视为对象的一种特例,其中所有组成部分都是相互关联的。同时,系统也可以是复杂的非系统对象的组成部分。
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引用次数: 0
Transformation of International Labor Migration in the Russian Far East in the Post-Soviet Period 后苏联时期俄罗斯远东地区国际劳动力迁移的转变
IF 0.3 Q4 GEOGRAPHY Pub Date : 2024-03-22 DOI: 10.1134/s1875372823040091
S. N. Mishchuk

Abstract

The aim of the study is to analyze the transformation of the sectoral and territorial structure of international labor migrants in the Far East in the post-Soviet period. The subject for study is international labor migration in the Far Eastern regions. In contrast to earlier studies on similar topics, this paper analyzes the change in the structure of migration both at the levels of districts and individual regions of the Far East. It is shown that changes in the structure of labor migration in the Russian Far East correspond to all-Russian trends with a time lag of 10 years. While in general throughout Russia a steady excess of labor migrants from neighboring countries with visa-free regimes has been observed since the mid-2000s, overall throughout the Far East, it has been observed since the mid-2010s. It was found that by the beginning of the 2020s, a sectoral specialization of labor migrants from non-CIS and CIS countries had formed in the labor market of Far Eastern regions. It was established that the ratio of migrants’ categories differs in individual regions. It was determined that a list of source countries and the sectoral structure of foreign workers’ employment for countries with visa regimes formed from countries with visa regimes in the structure of labor migration of the Far East; however, the ratio of the countries has changed. China remains the leader, and citizens of Turkey, Vietnam, and Serbia also occupy a stable position in the Far Eastern labor market. In the Far Eastern labor market, among citizens of CIS countries, citizens of Uzbekistan, Kyrgyzstan, and Tajikistan are in the lead. It is shown that the Far Eastern regions are characterized by deconcentration of skilled and highly skilled labor migrants and by their distribution in a larger number of regions than before.

摘要 本研究旨在分析后苏联时期远东地区国际劳工移民的部门和地域结构的变化。研究对象是远东地区的国际劳工移民。与之前类似主题的研究不同,本文分析了远东地区区级和个别地区级移民结构的变化。研究表明,俄罗斯远东地区劳动力迁移结构的变化与全俄罗斯的趋势一致,但有 10 年的时间差。自 2000 年代中期以来,俄罗斯全国范围内来自免签证邻国的劳动力移民持续过剩,而在整个远东地区,这一现象自 2010 年代中期开始出现。研究发现,到 2020 年代初,来自非独联体和独联体国家的劳动力移民在远东地区劳动力市场上形成了部门专业化。各地区的移民类别比例也不尽相同。研究确定,在远东地区劳动力迁移结构中,签证制度国家与签证制度国家之间形成了来源国清单和外籍工人就业部门结构;但是,国家之间的比例发生了变化。中国仍然处于领先地位,土耳其、越南和塞尔维亚的公民在远东劳动力市场上也占有稳定的地位。在远东劳动力市场上,独联体国家的公民中,乌兹别克斯坦、吉尔吉斯斯坦和塔吉克斯坦的公民处于领先地位。研究表明,远东地区的特点是技术移民和高技能劳动力移民的非集中化以及他们在更多地区的分布。
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引用次数: 0
Reforestation in Postagricultural Areas of Western Transbaikalia 在外贝加尔西部农业后地区重新造林
IF 0.3 Q4 GEOGRAPHY Pub Date : 2024-03-22 DOI: 10.1134/s1875372823040121
A. P. Sizykh, V. I. Voronin, V. A. Oskolkov, A. P. Gritsenyuk

Abstract

The article establishes the tendencies of forest formation in fallow lands of different ages, currently used as rangelands, in postagricultural areas of Western Transbaikalia. Assessments of the nature of the restorative dynamics of forests in fallow lands extensively reference the typological and species composition of phytocenoses of the surrounding areas that have never been used for tilling. It is established that herbaceous communities currently emerging in fallow lands and steppe areas include tree species such as Scots pine (Pinus sylvestris L.), more rarely Siberian larch (Larix sibirica Ledeb.), and sometimes Siberian elm (Ulmus pumila L.). It has been determined that, once removed from intensive pasture rotation, plant communities gradually restore a layered structure and show an increase in the species diversity of plants and in their abundance in communities. At the same time, it is noted that pine is actively advancing into herbaceous (steppe) communities of plant species typical of the forest–steppe and steppe. It has been found that the age composition of pine specimen varies from 2–5-year-old individuals to 20–25-year-old trees growing in isolated groups in fallow lands throughout the study area. It is noted that areas of fallow lands that are adjacent to a closed forest stand tend to have a fairly closed undergrowth, regardless of orographic features of the territory. The ground cover of such groupings is noted to have a significant presence of plant species characteristic of zonal light coniferous forests. That is likely to indicate an early stage of formation of zonal-type light coniferous taiga. A restraining factor in the development of forests in fallow and steppe lands in the study region is the potential increase in anthropogenic influences, mainly grazing regimes, due to an increased number of farms. Human activity in the area often involves periodic anthropogenic fires deliberately set in order to preserve rangelands. Pine undergrowth is also simply felled, both on fallow lands and in adjacent territories. That is, in many respects, a crucial factor for the possibility of formation and development of forests on postagricultural territories in the near future.

摘要 文章确定了外贝加尔西部农业后地区目前用作牧场的不同年龄休耕地的森林形成趋势。对休耕地森林恢复动态性质的评估广泛参考了周边地区从未耕种过的植物群落的类型和物种组成。研究发现,目前在休耕地和草原地区出现的草本群落包括苏格兰松树(Pinus sylvestris L.)、西伯利亚落叶松(Larix sibirica Ledeb.)等树种,有时也包括西伯利亚榆树(Ulmus pumila L.)。据测定,一旦脱离密集的牧场轮作,植物群落会逐渐恢复分层结构,并显示出植物物种多样性和群落丰度的增加。同时,研究还发现,松树正积极向草本(草原)群落推进,这些群落中的植物物种具有森林-草原和草原的典型特征。研究发现,在整个研究区域的休耕地中,松树标本的树龄组成从 2-5 年的个体到 20-25 年树龄的树木不等,这些树木孤立地生长在一起。值得注意的是,与郁闭林分相邻的休耕地区域往往有相当郁闭的林下植被,与该地区的地形特征无关。我们注意到,在这些群落的地面植被中,有大量具有地带性轻针叶林特征的植物物种。这可能预示着泰加地带性轻针叶林的早期形成阶段。在研究区域的休耕地和草原上发展森林的一个限制因素是人为影响的潜在增加,主要是农场数量的增加导致的放牧制度。该地区的人类活动通常包括为保护牧场而故意定期人为放火。休耕地和邻近地区的松树林也被简单砍伐。这在许多方面都是在不久的将来在农业后土地上形成和发展森林的一个关键因素。
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引用次数: 0
Soil Resources of Southern Siberia 南西伯利亚的土壤资源
IF 0.3 Q4 GEOGRAPHY Pub Date : 2024-03-22 DOI: 10.1134/s1875372823040030
O. I. Bazhenova, E. M. Tyumentseva, A. A. Cherkashina, V. A. Golubtsov, S. A. Tukhta

Abstract

The article considers the issues of soil degradation and the possibility of conserving and restoring soil fertility in southern regions of Siberia. Long-term stationary research data is synthesized in order to determine the mechanism of erosion processes and obtain quantitative data on soil losses depending on key factors of water and wind erosion. Particular attention is given to the periodically extreme nature of processes that cause catastrophic soil degradation. Patterns of changes in the structure of processes that require agricultural soil conservation measures are revealed. The mechanism of soil erosion and soil degradation rate changes in the west to east direction along the belt of steppes and forest–steppes of southern Siberia. In the south of Western Siberia, the pressing issue is protecting soils from thawing erosion, in Khakassia the particular hazard is soil deflation, and in Cis-Baikal and Transbaikal region soil degradation is exacerbated by the combined effect of rainfall erosion and deflation. The results of a quantitative cartographic assessment of erosion hazard levels based on empirical models of potential soil loss and deflation are presented for the major agricultural regions with a case study of the Irkutsk–Cheremkhovo plain and the Nazarovskaya and Yuzhno-Minusinskaya depressions. A decrease in erosion soil losses as a result of socioeconomic agriculture reforms and a significant reduction in the area of agricultural land in the early 1990s and in the post-reform period (2010–2017) are noted. It is emphasized that the re-expansion of agricultural land observed in recent years creates the necessity of large-scale inventory mapping of erosion processes in southern Siberia. That data can be used to select an optimal nature management policy that promotes conservation of soil resources.

摘要 本文探讨了西伯利亚南部地区的土壤退化问题以及保护和恢复土壤肥力的可能性。文章综合了长期固定研究数据,以确定侵蚀过程的机理,并根据水蚀和风蚀的关键因素获得土壤流失的定量数据。特别关注造成灾难性土壤退化的周期性极端过程。揭示了需要采取农业水土保持措施的过程结构的变化规律。沿着西伯利亚南部的草原和森林草原带,土壤侵蚀机制和土壤退化速度自西向东发生变化。在西西伯利亚南部,亟待解决的问题是保护土壤免受解冻侵蚀;在哈卡西亚,特别的危害是土壤塌陷;在西斯-贝加尔和外贝加尔地区,降雨侵蚀和塌陷的共同作用加剧了土壤退化。以伊尔库茨克-切列姆霍沃平原、纳扎罗夫斯卡娅洼地和尤日诺-米尼辛斯卡娅洼地为例,介绍了根据潜在土壤流失和塌陷的经验模型对主要农业区水土流失危害程度进行定量制图评估的结果。报告指出,由于社会经济农业改革,土壤侵蚀损失减少,20 世纪 90 年代初和改革后时期(2010-2017 年)的农业用地面积大幅减少。需要强调的是,近年来农业用地的重新扩大使得有必要对西伯利亚南部的水土流失过程进行大规模的清查测绘。这些数据可用于选择促进土壤资源保护的最佳自然管理政策。
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引用次数: 0
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Geography and Natural Resources
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