scholarly journals Mapping and analyzing the distribution of the species in the genus Tulipa (Liliaceae) in the Ferghana Valley of Central Asia

2021 ◽  
Vol 51 (3) ◽  
pp. 181-191
Author(s):  
Davron DEKHKONOV ◽  
Komiljon Sh. TOJIBAEV ◽  
Dilmurod MAKHMUDJANOV ◽  
Nu-ree NA ◽  
Shukherdorj BAASANMUNKH ◽  
...  
Keyword(s):  
Spatial Distribution ◽  
Central Asia ◽  
Geographic Area ◽  
Tien Shan ◽  
Knowledge Gap ◽  
Spatial Distributions ◽  
Entire Area ◽  
Mountain Ranges ◽  
Comprehensive Information ◽  
Ferghana Valley

Tulips are bulbous geophytes that have considerable commercial value worldwide. This genus primarily originated in the Tien Shan and Pamir-Alai mountain ranges, which surround the Ferghana Valley. The Ferghana Valley is home to five sections of the genus Tulipa L, represented by 23 taxa (22 species). However, there is a lack of detailed information about the distribution of Tulipa species in the natural geographic area of the Ferghana Valley. Therefore, to address this knowledge gap, we comprehensively investigated the spatial distribution of all Tulipa species in the valley. To assess the spatial distribution, the entire area was divided into 32 squares consisting of four latitudinal and eight longitudinal zones. The results showed that latitudinal zones B and C with 15 and 13 taxa, respectively, along with five longitudinal zones (A5, B3, B4, C2, and C3) with 5 to 10 taxa were hotspots for this genus. Additionally, the spatial distributions of the species in terms of the corresponding state borders, mountain ranges, endemism, and conservation issues were assessed. The findings of this study provide comprehensive information about the distribution of Tulipa species to assist with conservation initiatives ultimately to ensure the survival of various species.

scholarly journals Stress-strain state of the earth’s crust of the Central Asian mountain belt: distant effect of the tectonic impact of the Indo-Eurasian collision

2021 ◽  
Vol 929 (1) ◽  
pp. 012003
Author(s):  
M M Buslov
Keyword(s):  
Central Asia ◽  
Sedimentary Basins ◽  
Tien Shan ◽  
Earth’S Crust ◽  
High Mountain ◽  
Mountain Ranges ◽  
Central Asian ◽  
Sayan Region ◽  
Earth's Crust ◽  
Cenozoic Sediments

Abstract In recent decades, extensive geological, geophysical and geochronological data have been obtained that characterize in detail the results of the distant tectonic impact of the Indo-Eurasian collision on the lithosphere of Central Asia, which led to the formation of the mountain systems of the Pamirs, Tien Shan, Altai-Sayan region and Transbaikalia from the Late Paleogene (about 25 million years ago). It has been established that the formation of the structure of Central Asia occurred as a result of the transmission of deformations from the Indo-Eurasian collision over long distances according to the “domino principle” through the rigid structures of Precambrian microcontinents located among the Paleozoic-Mesozoic folded belts. The study of peneplain surfaces deformed into simple folds on high-mountain plateaus surrounded by rugged mountain ranges made it possible to reveal the parameters of the deformations of the earth’s crust, the interrelationship of the formation of relief and sedimentary basins. Apatite track dating data, structural and stratigraphic analyses of Late Cenozoic sediments in the basins prove a period of intense tectonic activation the entire lithosphere of Central Asia from the Indian continent to the Siberian platform starting from the Pliocene (about 3.5 million years). As a result of reactivation of the heterogeneous basement of Central Asia, high seismicity was manifested, which is concentrated mainly along the border of the microcontinents (Central Tianshan, Junggar and Tuva-Mongolian) and the Siberian craton, as well as in the zones of articulation of regional faults.

RISHTAN SCHOOL OF CERAMICS

2019 ◽  
Vol 16 (2) ◽  
pp. 73-77
Author(s):  
Akmal Marozikov ◽  
Keyword(s):  
Central Asia ◽  
Building Materials ◽  
Works Of Art ◽  
The World ◽  
Ferghana Valley ◽  
History Of ◽  
Made In ◽  
National Style

Ceramics is an area that has a long history of making clay bowls, bowls, plates,pitchers, bowls, bowls, bowls, pots, pans, toys, building materials and much more.Pottery developed in Central Asia in the XII-XIII centuries. Rishtan school, one of the oldest cities in the Ferghana Valley, is one of the largest centers of glazed ceramics inCentral Asia. Rishtan ceramics and miniatures are widely recognized among the peoples of the world and are considered one of the oldest cities in the Ferghana Valley. The article discusses the popularity of Rishtan masters, their products made in the national style,and works of art unique to any region

scholarly journals Remote Sensing Monitoring of Advancing and Surging Glaciers in the Tien Shan, 1990–2019

2021 ◽  
Vol 13 (10) ◽  
pp. 1973
Author(s):  
Sugang Zhou ◽  
Xiaojun Yao ◽  
Dahong Zhang ◽  
Yuan Zhang ◽  
Shiyin Liu ◽  
...  
Keyword(s):  
Remote Sensing ◽  
Landsat Tm ◽  
Tien Shan ◽  
High Latitudes ◽  
Remote Sensing Images ◽  
Climate Variable ◽  
Mountain Ranges ◽  
Remote Sensing Monitoring ◽  
Change Mechanism ◽  
Temperature And Precipitation

The advancing of glaciers is a manifestation of dynamic glacial instability. Glaciers in the Tien Shan region, especially in the Central Tien Shan, show instability, and advancing glaciers have been recently detected. In this study, we used Landsat TM/ETM+/OLI remote sensing images to identify glaciers in the Tien Shan region from 1990 to 2019 and found that 48 glaciers advanced. Among them, thirty-four glaciers exhibited terminal advances, and 14 glaciers experienced advances on the tributary or trunk. Ten of the glaciers experiencing terminal advances have been identified as surging glaciers. These 48 glaciers are distributed in the western part of the Halik and Kungey Mountain Ranges in the Central Tien Shan, and Fergana Mountains in the Western Tien Shan, indicating that the Tien Shan is also one of the regions where advancing and surging glaciers are active. From 1990 to 2019, a total of 169 times advances occurred on 34 terminal advancing glaciers in the Tien Shan region; the highest number of advancing and surging of glaciers occurred in July (26 and 14 times, respectively). With reference to the existing literature and the present study, the surge cycle in the Tien Shan is longer than that in other regions at high latitudes in Asia, lasting about 35–60 years. Surging glaciers in the Tien Shan region may be affected by a combination of thermal and hydrological control. An increase in temperature and precipitation drives surging glaciers, but the change mechanism is still difficult to explain based on changes in a single climate variable, such as temperature or precipitation.

Earthquake focal mechanisms, deformation state, and seismotectonics of the Pamir-Tien Shan region, Central Asia

1995 ◽  
Vol 100 (B10) ◽  
pp. 20321-20343 ◽  
Author(s):  
Albert A. Lukk ◽  
Sergei L. Yunga ◽  
Vladimir I. Shevchenko ◽  
Michael W. Hamburger
Keyword(s):  
Central Asia ◽  
Focal Mechanisms ◽  
Tien Shan ◽  
Earthquake Focal Mechanisms ◽  
Deformation State

Paleozoic accretion and Cenozoic redeformation of the Chinese Tien Shan Range, central Asia

Geology ◽  
1990 ◽  
Vol 18 (2) ◽  
pp. 128 ◽  
Author(s):  
B. F. Windley ◽  
M. B. Allen ◽  
C. Zhang ◽  
Z-Y Zhao ◽  
G-R Wang
Keyword(s):  
Central Asia ◽  
Tien Shan

Permafrost warming in the Tien Shan Mountains, Central Asia

2007 ◽  
Vol 56 (3-4) ◽  
pp. 311-327 ◽  
Author(s):  
S.S. Marchenko ◽  
A.P. Gorbunov ◽  
V.E. Romanovsky
Keyword(s):  
Central Asia ◽  
Tien Shan ◽  
Permafrost Warming ◽  
Tien Shan Mountains

scholarly journals Pupilla loessica LOŽEK 1954 (Gastropoda: Pulmonata: Pupillidae) - „A living Fossil“ in Central Asia?

2009 ◽  
Vol 58 (1) ◽  
pp. 55-69 ◽  
Author(s):  
Stefan Meng ◽  
Matthias H. Hoffmann
Keyword(s):  
Central Asia ◽  
Baikal Region ◽  
Shell Morphology ◽  
Tien Shan ◽  
European Region ◽  
Living Fossil ◽  
Central European ◽  
South Eastern ◽  
Central European Region ◽  
Northern Mongolia

Abstract. LOŽEK (1986) is of the opinion that Pupilla loessica has been found recently in Central Asia. The aim of this study is to provide some initial, concrete contributions to the discussion of this subject. It should be understood as a basis for further investigations. During recent visits on site between 1995 and 2006 in Central Asia in the Russian Altay, in Northern Mongolia, in the Baikal region and in the Tien Shan, numerous recent malacocenoses were examined. In many places evidence was found of a form of Pupilla which had not previously been described from this region; its shell morphology cannot be distinguished from Pupilla loessica. Its distribution is concentrated in the strongly continental Khrebet Saylyugem in the South Eastern Altay. The probability of the occurrence of Pupilla loessica in Central Asia is supported, apart from the shell morphology criteria, by the preference of this species for more continental types of habitat with average annual temperatures markedly below 0° C and the corresponding accompanying fauna adapted to the cold, including e.g. Columella columella, Vertigo genesii, Vallonia tenuilabris, etc., which make these fauna easily comparable to the Pleistocene glacial associations of the Central European region.

scholarly journals A spatiotemporal analysis of COVID-19 transmission in Jakarta, Indonesia for pandemic decision support

2022 ◽  
Vol 17 (s1) ◽  
Author(s):  
Agung Syetiawan ◽  
Mira Harimurti ◽  
Yosef Prihanto
Keyword(s):  
Disease Transmission ◽  
Spatiotemporal Analysis ◽  
Space Time ◽  
Policy Makers ◽  
Time Pattern ◽  
Entire Area ◽  
Comprehensive Information ◽  
National Economic ◽  
Referral Hospitals ◽  
Huge Impact

With 25% confirmed cases of the country’s total number of coronavirus disease 2019 (COVID-19) on 31 January 2021, Jakarta has the highest confirmed cases of in Indonesia. The city holds a significant role as the centre of government and national economic activity for which pandemic have had a huge impact. Spatiotemporal analysis was employed to identify the current condition of disease transmission and to provide comprehensive information on the COVID-19 outbreak in Jakarta. We applied space-time analysis to visualise the pattern of COVID-19 hotspots in each time series. We also mapped area capacity of the referral hospitals covering the entire area of Jakarta to understand the hospital service range. This research was conducted in 4 stages: i) disease mapping; ii) spatial autocorrelation analysis; iii) space-time pattern analysis; and iv) areal capacity mapping. The analysis resulted in 144 sub-districts categorised as high vulnerability. Autocorrelation studies by Moran’s I identified cluster patterns and the emerging hotspot results indicated successful interventions as the number of hotspots fell in the first period of social restrictions. The results presented should be beneficial for policy makers.

scholarly journals Effect of Droplet Size and Counterions on the Spatial Distribution of Ions

2019 ◽  
Author(s):  
Victor Kwan ◽  
Styliani Consta
Keyword(s):  
Spatial Distribution ◽  
Reaction Mechanisms ◽  
Charge Carriers ◽  
Transfer Reactions ◽  
Spatial Distributions ◽  
Hydronium Ions ◽  
Ionic Atmosphere ◽  
Droplet Sizes ◽  
Charge Transfer Reactions ◽  
First Time

Electrosprayed droplets have emerged as a new environment for accelerating chemical reactions by orders of magnitude relative to their bulk analogues. Nevertheless the reaction mechanisms are still unknown. Unraveling the ion spatial distribution is critical as to where charge transfer reactions are likely to take place and as to their effect on the ionic atmosphere of macroions. Here we investigate the ion spatial distributions in aqueous droplets with diameters in the range of 5 nm to 16 nm with and without counterions using molecular dynamics. The charge carriers are Na, Cl ions and model hydronium ions. For the first time droplet sizes that are accessible to experimental scrutiny are modeled atomistically. <br>

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