Geochronology, petrology and Hf–S isotope geochemistry of the newly-discovered Xiarihamu magmatic Ni–Cu sulfide deposit in the Qinghai–Tibet plateau, western China

Lithos ◽  
2015 ◽  
Vol 216-217 ◽  
pp. 224-240 ◽  
Author(s):  
Chusi Li ◽  
Zhaowei Zhang ◽  
Wenyuan Li ◽  
Yalei Wang ◽  
Tao Sun ◽  
...  
Keyword(s):  
Isotope Geochemistry ◽  
Western China ◽  
Tibet Plateau ◽  
Sulfide Deposit ◽  
Qinghai Tibet Plateau ◽  
S Isotope

scholarly journals Research on the Influence of Energy Utilization and Economic Development on Human Well-Being in Qinghai-Tibet Plateau

2020 ◽  
Vol 13 (1) ◽  
pp. 196
Author(s):  
Mengmeng Meng ◽  
Weiguo Fan ◽  
Jianchang Lu ◽  
Xiaobin Dong ◽  
Hejie Wei
Keyword(s):  
Economic Development ◽  
Well Being ◽  
Resource Acquisition ◽  
Energy Utilization ◽  
Western China ◽  
Tibet Plateau ◽  
Four Dimensions ◽  
Generalized Matrix ◽  
Qinghai Tibet Plateau ◽  
Means Of Production

Qinghai-Tibet Plateau is a typical resource-rich but economically backward region in western China, and it is of great urgency to improve human well-being. Combined with previous scholars’ research and the characteristics of Qinghai-Tibet Plateau, this paper constructs an index system of human well-being including four dimensions: income and consumption, means of production, means of subsistence, and resource acquisition ability. Then, it uses generalized matrix method estimations to measure the influence of energy utilization and economic development on human well-being and makes a regression analysis on the influence of energy utilization and economic development on human well-being in various provinces in this region. It is found that per capita GDP and coke utilization promote the well-being of all dimensions, while the urban registered unemployment rate only promotes the well-being of means of subsistence. The utilization of gasoline and natural gas promotes income and consumption and inhibits the means of subsistence and resource acquisition ability, but they have opposite effects on means of production. The impacts of energy utilization and economic development in different provinces on human well-being are different. This study is of great significance to the related research aiming at improving people’s livelihood and promoting regional development.

The Norian megalodontid fauna in Qinghai-Tibet Plateau, western China

2012 ◽  
Vol 55 (10) ◽  
pp. 1620-1626
Author(s):  
HuaZhou Yao ◽  
RenJie Zhang ◽  
JingGen Sha ◽  
JianXiong Wang ◽  
ZhiJun Niu ◽  
...  
Keyword(s):  
Western China ◽  
Tibet Plateau ◽  
Qinghai Tibet Plateau

Exploring the diversity of Asian Cryptocercus (Blattodea : Cryptocercidae): species delimitation based on chromosome numbers, morphology and molecular analysis

2018 ◽  
Vol 32 (1) ◽  
pp. 69 ◽  
Author(s):  
Qikun Bai ◽  
Lili Wang ◽  
Zongqing Wang ◽  
Nathan Lo ◽  
Yanli Che
Keyword(s):  
Chromosome Number ◽  
Species Delimitation ◽  
Phylogenetic Analyses ◽  
Western China ◽  
Tibet Plateau ◽  
28S Rrna ◽  
Candidate Species ◽  
The Rich ◽  
Coi Sequences ◽  
Qinghai Tibet Plateau

Woodroaches from the genus Cryptocercus Scudder, 1862 are known to display low levels of morphological divergence, yet significant genetic divergence and variability in chromosome number. Compared with Cryptocercus taxa from North America, the diversity of the genus in Asia has received relatively little attention. We performed morphological and karyotypic examinations of multiple taxa from several previously unsampled mountainous areas of central and south-western China, and identified nine candidate species primarily on the basis of chromosome number. We then investigated diversity across all Asian Cryptocercus, through phylogenetic analyses of 135 COI sequences and 74 28S rRNA sequences from individuals of 28 localities, including species delimitation analysis in General Mixed Yule Coalescent (GMYC) and Automatic Barcode Gap Discovery (ABGD). Phylogenetic results indicated that individuals from the same locality constituted well supported clades. The congruence of GMYC and ABGD results were in almost perfect accord, with 28 candidate species described on the basis of karyotypes (including the nine identified in this study). We provide evidence that each valley population in the Hengduan Mountains contains a separate evolving lineage. We conclude that the principal cause of the rich Cryptocercus diversity in China has been the uplift of the Qinghai-Tibet Plateau.

Degradation of frigid swampy meadows on the Qinghai–Tibet Plateau

2016 ◽  
Vol 40 (6) ◽  
pp. 794-810 ◽  
Author(s):  
Jay Gao ◽  
Xilai Li
Keyword(s):  
Economic Loss ◽  
Western China ◽  
Tibet Plateau ◽  
Future Research ◽  
Dry Grassland ◽  
Proactive Approach ◽  
Future Research Agenda ◽  
Research Outcome ◽  
Qinghai Tibet Plateau ◽  
Meadow Degradation

The frigid swampy meadows of the Qinghai–Tibet Plateau in western China have suffered widespread degradation. The severe degradation of such meadows can lead to the formation of a landscape commonly known as heitutan. Much research has been undertaken to study its triggers, formation mechanism, grading of severity, and rehabilitation. These studies are comprehensively reviewed in this paper. In particular, it attempts to reconcile two divergent theories on heitutan formation by proposing a new model to elucidate the role of a given factor at each stage of degradation. In this model, climate desiccation is the most important in transforming healthy meadow to dry grassland, while rodent attack is the most important in worsening dry grassland to degraded meadow. Overgrazing is the most important factor during the early stages of degradation. Wind and water erosion is important during the final stage, when a large quantity of loose materials has been accumulated by rodent burrowing. Also covered in this paper is how to rehabilitate heitutan to productive use, including the effectiveness of various measures. Finally, this paper identifies the gap in our understanding of swampy meadow degradation and spells out a future research agenda. It is concluded that future research on heitutan will undergo a transformation from descriptive to quantitative. The expected research outcome will inform herders of the appropriate strategies that can be adopted to prevent heitutan formation. This proactive approach will minimize economic loss from swampy meadow degradation and reduce its adverse impact on the environment.

A new species of Pertusaria (Pertusariaceae, Ascomycota) from Qinghai-Tibet Plateau of China

Phytotaxa ◽  
2018 ◽  
Vol 333 (1) ◽  
pp. 143
Author(s):  
ZHONG-SHUAI SUN ◽  
ZUN-TIAN ZHAO
Keyword(s):  
New Species ◽  
Tibetan Plateau ◽  
Western China ◽  
Tibet Plateau ◽  
Qinghai Tibet Plateau ◽  
A New Species

Two species of Pertusariaceae are here described as new to science, based on material collected from Qinghai-Tibetan Plateau, western China. Pertusaria tibetensis Z.S. Sun has broad lecanorate verrucae, pinkish pruinose discs, 1-spored asci and the presence of norstictic acid. Pertusaria beishanensis Z.S. Sun has broad lecanorate verrucae, black pruinose discs, 2-spored asci and the presence of planaic acid.

scholarly journals High Diversity of Small Insectivorous Mammals on Qinghai-Tibet Plateau and First Description of Karyotype for four Endemics of China

2021 ◽  
Author(s):  
Svetlana V. Pavlova ◽  
Vladimir S. Lebedev ◽  
Vasily D. Yakushov ◽  
Yongke Zhu ◽  
Yun Fang ◽  
...  
Keyword(s):  
Molecular Genetic ◽  
B Chromosome ◽  
Central China ◽  
Western China ◽  
Tibet Plateau ◽  
Phylogenetic Groups ◽  
The North ◽  
Molecular Genetic Data ◽  
Distribution Ranges ◽  
Qinghai Tibet Plateau

Abstract Among seven species of the order Eulipotyphla (from southern Gansu and northern Sichuan Provinces, Central China) studied cytogenetically, karyotypes of one talpid species, Uropsilus aff. soricipes (2n = 36, NFa = 54), and three soricid species, Chodsigoa hypsibia (2n = 65, NFa = 66), Sorex cansulus (2n = 42, NFa = 64) and Sorex thibetanus (2n = 42, NFa = 60), are described cytogenetically for the first time. All four species are endemic to China with distribution ranges restricted to the Qinghai-Tibet Plateau and adjacent mountain ranges. The Ch. hypsibia karyotype consists of mostly acrocentric autosomes and one metacentric pair of autosomes; besides, a B chromosome was identified. No polymorphism was detected among karyotypes of other species, including shrews Sorex bedfordiae (2n = 26, NFa = 44), Anourosorex squamipes (2n = 48, NFa = 92) and Crocidura suaveolens (2n = 40, NFa = 44). The Chinese shrew mole U. aff. soricipes and three shrew species (S. bedfordiae, Ch. hypsibia and A. squamipes) represent autochthonous fauna of Central/Western China, whereas S. thibetanus, S. cansulus and C. suaveolens belong to phylogenetic groups occurring mostly to the north and west from China; therefore, they should be considered relatively recent colonisers. Thus, considering the relationships of the species within phylogenetic groups, our results on karyotypes are in good agreement with molecular genetic data.

scholarly journals Detecting Permafrost in Plateau and Mountainous Areas by Airborne Transient Electromagnetic Sensing

Electronics ◽  
2020 ◽  
Vol 9 (8) ◽  
pp. 1229 ◽  
Author(s):  
Benyu Su ◽  
Rongfu Rao ◽  
Zhixiong Li ◽  
Lei Song ◽  
Jianhua Yue
Keyword(s):  
Effective Means ◽  
Electromagnetic Method ◽  
Western China ◽  
Tibet Plateau ◽  
Transient Electromagnetic Method ◽  
Transient Electromagnetic ◽  
Electromagnetic Responses ◽  
Algorithm Comparison ◽  
Airborne Electromagnetic ◽  
Qinghai Tibet Plateau

Transportation has become a key bottleneck which restricts economic development in Western China. However, during the construction of the western railway, the permafrost problem has plagued railway construction on the Qinghai–Tibet Plateau, and has not yet been resolved. Accurately identifying permafrost by geophysical method is the most effective means to solve this problem. However, the mountainous and plateau terrain in Western China impose huge challenges in collecting geophysical data. To address this issue, this paper proposes an airborne transient electromagnetic method to collect geophysical electromagnetic data to identify permafrost in the mountains and plateaus of Western China. Based on Maxwell’s equations, the forward model of the airborne electromagnetic was derived, and the finite element method was used to calculate the two-dimensional (2D) space electromagnetic responses of different permafrost geo-electrical models. Furthermore, a coupling function was constructed to estimate the distribution of the resistivity of the permafrost by the least-squares fitting algorithm. Comparison between inversion resistivity distribution and the geo-electrical model showed that the proposed airborne transient electromagnetic method was valid for exploring the permafrost in the mountains and the Qinghai–Tibet Plateau in Western China.

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