Amur River
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2022 ◽  
Vol 962 (1) ◽  
pp. 012043
Author(s):  
L V Zamana ◽  
I L Vakhnina

Abstract Based on the results of the analysis of satellite images and field observations, data on the length of the gold-bearing placers disturbed by the development along a number of main tributaries of the Shilka and Argun rivers are presented, the formed technogenic relief forms are indicated. Depending on the method of development, two types of technogenic landscapes have been identified - the excavation-dump with hydromonitor mining and belt trench-dump when washing with drags. The main directions of research on the assessment of placer gold mining in the natural complexes of river valleys are proposed.


2021 ◽  
Vol 17 (4) ◽  
pp. 431-441
Author(s):  
Stanislav Alkhasov ◽  
Sergey Ryazantsev

Amur Region (also named Amur Oblast) is a border region of Russia, characterized by socio-economic disadvantages (low standard of living, high prices) and unfavorable climatic conditions in part of the territory. Major projects in the field of construction, transportation, industrial production, fuel, and energy are being implemented in this region: the Vostochny Cosmodrome, the Amur Gas Processing Plant, etc. Territories of accelerated socioeconomic development (the Russian acronym is TOR) are being created. The regional government is making efforts to increase the investment attractiveness of the region, which is of interest to the business communities of neighboring countries. We formulate the portrait of a typical potential migrant worker who is ready to relocate to work in the Amur Region. According to the data of Internet recruitment, we show that the migration inflow prevails for the purpose of rotational basis (temporary) work. We identify the most significant donor regions, popular industries, and median salary expectations of potential migrant workers. We pay attention to the fact that the salaries of rotational basis workers are, on average, noticeably higher than the salaries of the local population: it becomes an additional factor of social tension. The incomes of rotational basis workers increase the values of regional average salaries, but in reality, this money does not remain inside Amur Region. Disproportions in the labour market are one more factor in the growth of inequality in the region, which additionally provokes the outflow of the local population from the region. Accordingly, the implementation of large-scale construction and fuel and energy projects in its current form is unable to overcome negative demographic trends, because it cannot individually solve the complex problems of socio-economic development of the Russian Amur river region. Social programs, such as «Zemsky Teacher» and «Zemsky Doctor», are not of a systematic nature. Ultimately, the social sector continues to degrade and does not receive a meaningful inflow of new highly qualified specialists (doctors, teachers, scientists, etc.) from outside.


2021 ◽  
Author(s):  
Pavel Mikheev ◽  
Denis Kotsyuk ◽  
Elena Podorozhnyuk ◽  
Vsevolod Koshelev ◽  
Tatiana Sheina ◽  
...  

Atmosphere ◽  
2021 ◽  
Vol 12 (12) ◽  
pp. 1560
Author(s):  
Ke Wen ◽  
Bing Gao ◽  
Mingliang Li

The Amur River is one of the top ten longest rivers in the world, and its hydrological response to future climate change has been rarely investigated. In this study, the outputs of four GCMs in the Coupled Model Intercomparison Project Phase 6 (CMIP6) were corrected and downscaled to drive a distributed hydrological model. Then, the spatial variations of runoff changes under the future climate conditions in the Amur River Basin were quantified. The results suggest that runoffs will tend to increase in the future period (2021–2070) compared with the baseline period (1961–2010), particularly in August and September. Differences were also found among different GCMs and scenarios. The ensemble mean of the GCMs suggests that the basin-averaged annual precipitation will increase by 14.6% and 15.2% under the SSP2-4.5 and SSP5-8.5 scenarios, respectively. The increase in the annual runoff under the SSP2-4.5 scenario (22.5%) is projected to be larger than that under the SSP5-8.5 scenario (19.2%) at the lower reach of the main channel. Future climate changes also tend to enhance the flood peak and flood volume. The findings of this study bring new understandings of the hydrological response to future climate changes and are helpful for water resource management in Eurasia.


2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Anton Sasin ◽  
Anna Serdyuk ◽  
Baoguang Zhu ◽  
Qingshan Zhao

AbstractIn this study, we report the first ever documented instances of attempted and successful reproduction (rearing two offspring) of Oriental Storks (Ciconia boyciana) at age 2 years in a wild population in the middle Heilongjiang-Amur River Basin in Russia, using a combination of GPS-GSM tracking, DNA sex identification and field verification.


2021 ◽  
pp. 1040-1053
Author(s):  
Nickolai A. Bochkarev ◽  
Elena I. Zuykova ◽  
Lyudmila A. Pestryakova ◽  
Lena A. Ushnitskaya ◽  
Evgeny S. Zakharov ◽  
...  

The results of morphological and genetic analyses of forms/species of the Coregonus lavaretus pidschian (Gmelin, 1789) complex from the Indigirka and Kolyma river basins are presented in the context of there being recent postglacial speciation events. It has been found that the studied whitefishes belong to the sparsely rakered and low lateral-line forms and have previously been described as Coregonus lavaretus pidschian n. jucagiricus Drjagin (Berg), 1932. Based on these characters, this whitefish does not differ from most Arctic whitefish populations (in particular from Coregonus lavaretus glacialis Kirillov, 1972). Analysis of variability of the ND1 gene (mtDNA) showed that whitefishes from the Indigirka and Kolyma basins belong to a distant phylogenetic lineage, which is significantly different from all previously studied whitefish lineages from the Ob, Yenisei, Lena, Anadyr, and Amur river basins. Analysis of variability of the ITS1 fragment (nDNA) showed that all studied forms/species (from Ob River to Amur River basins), including C. l. pidschian n. jucagiricus, have a tandem arrangement of two identical nucleotide fragments and very similar nucleotide composition of the ITS1 region. Based on contemporary data, this phylogenetic lineage of the C. pidschian complex could be considered a young postglacial allopatric species.


2021 ◽  
Vol 895 (1) ◽  
pp. 012025
Author(s):  
A N Makhinov ◽  
A F Makhinova ◽  
Sh Liu

Abstract Inhomogeneity of the concentrations of chemical elements in the cross-section of the Amur River is considered as a function of the state of their soluble and suspended forms. Flooding of wetlands and urbanized areas contributes to the removal of pollutants into the river channel. The wide spread of fens on the left bank contributes to the concentration of organic matter along the left bank of the river. Terrigenous material mostly comes from the right bank, where agricultural fields are concentrated. The ratio of their concentrations is maintained by the duration of the flood. The mechanisms of redistribution of elements between their suspended and soluble forms have been studied. The mechanisms of sorption of chemical compounds on mineral and organic colloids are described. It was found that mineral colloids with a negative charge due to electrostatic attraction sorb electrically neutral compounds (hydroxoaqua complexes [Mn(OH)2(OH2]0, ammonia [Cu(NH3)4(OH)2]0. The role of organic material in the redistribution of chemical compounds between soluble and suspended forms is shown. Organic colloids with molecular mass > 5.0 kDa precipitate complex cations – [FeHSO4]+, [FeHSO4]2+, [CuHSO4]+. An organic substance with a molecular mass of <2.0 kDa has a greater complexing ability for Fe(2)3+, Cu2+, Zn2+, Mn2+ ions. They bind metals to organo-mineral complexes by chemical interaction and form mobile organo-mineral complexes and heteropolar salts.


Author(s):  
Tingxiang Liu ◽  
Lingxue Yu ◽  
Kun Bu ◽  
Jiuchun Yang ◽  
Fengqin Yan ◽  
...  

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