River capture in the middle reaches of the palaeo-Yarlung Zangbo River

Liu, Yong; Wang, Yunsheng; Wei, Liangshuai; Shen, Tong; Shu, Qinfeng; Huang, Anbang; Jia, Yue

doi:10.1098/rsos.191753

Cited by 5 publications

(3 citation statements)

References 12 publications

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“…Hao and others discovered that the population of the Tibet was not overloaded [21]. The conclusion was opposite to the previous research results [22,23]. Therefore, it is necessary to analyze grain consumption that is suitable for the QTP to evaluate the grain security in this region.…”

Section: Introductionmentioning

confidence: 70%

Food and Grain Consumption Per Capita in the Qinghai–Tibet Plateau and Implications for Conservation

2021

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Background: Grain security is crucial for social stability and ecosystem conservation regionally and globally, and it is particularly concerned widely in the Qinghai-Tibet Plateau (QTP) due to its high altitude and harsh climate for agriculture. Method: In this paper, we calculated and analyzed per capita food and grain consumption, including direct grain consumption, grain for fodder, industry consumption, seeds consumption, and wastage consumption and its changes in the QTP during 1995–2019. Results: The results showed that (1) in 2019, the average food consumption per capita was 333.35 kg, was stable since 1995. The dietary structure of residents was composed of direct grain consumption (44.15%), meat (10.72%), and milk (6.94%). The consumption of meat and milk was higher than the national average. (2) The average daily intake of energy and protein, animal protein, and the ratio of high-quality protein and fat energy were 2156.21 kcal·d−1, 73.53 g·d−1, 23.06 g·d−1, 38.32%, and 27.77% in 2019. Their changes were −342.98 kcal·d−1, −8.91 g·d−1, 11.16 g·d−1, 18.37%, and 11.08%, respectively. (3) The corresponding grain consumption per capita was 284.90 kg·a−1 in 1995, 262.19 kg·a−1 in 2010, and then remained stable until 2019. Conclusion: The study suggested that food consumption per capital was guaranteed at the well-off level since 2010, and food and dietary structure of residents were corresponding to physical geographic and climatic environment in the QTP. The conflict between food security and the ecosystem conservation can be managed without scarifying nature as the total grain consumption was stable since 2010, and the yield per unit area and total grain yield were both increasing since 2003 for agricultural condition improved in the QTP.

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Section: Introductionmentioning

confidence: 70%

Food and Grain Consumption Per Capita in the Qinghai–Tibet Plateau and Implications for Conservation

2021

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“…Sun et al (2021) recently proposed a former connection between the YZR and the paleo-Red River via the Irrawaddy River and the three river gorges of Salween, Mekong and Yangtze that would have allowed dry river species to disperse in an east-west direction along with this ancient drainage system. The authors further hypothesized that with the accelerated uplift of the TP during the onset of the Pleistocene (ca 2.3 Mya), the formerly westward flowing YZR was captured by eastern gorges and reversed its flow, now heading to the east (Liu et al 2020). Dry river valley-dwelling plants could have migrated along this paleo-dispersal corridor (e.g.…”

Section: Dispersal and Niche Conservatismmentioning

confidence: 99%

The South Asian monsoon maintains the disjunction of Rumex hastatus between the western Himalayas and the Hengduan Mountains, southwest China

Martiné

Zeuss

Lampei

et al. 2022

Nordic Journal of Botany

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The Himalayas and the Hengduan Mountains of southwest China are hotspots of both climatic and species diversity. Yet, the distribution patterns of semi-arid plant communities that have arisen throughout the region's complex uplift history remain insufficiently understood. In particular, the striking disjunctions of plants associated with dry river valleys that solely occur on the eastern and western ends of the Himalayan arc, but are absent in between, lack a sound explanation. Here we aim to disentangle the more recent environmental drivers behind the disjunction of the semi-woody shrub Rumex hastatus found in dry river valleys of the western Himalayas and the Hengduan Mountains. We used ecological niche modeling and enhanced random forest parameterizations (down-sampling) to infer suitable and unsuitable habitats within the study area during the last glacial maximum, under present climate conditions, and under four future climate scenarios. Annual and seasonal precipitation contributed the strongest to the discrimination between occurrences and the distribution gap, with the latter showing much higher rainfall amounts. The gap was also characterized by low overall habitat suitability, whereas occurrence probabilities in dry river valleys inhabited by R. hastatus were very high. However, some suitable but isolated habitats within the gap were detected in Bhutan and the southeastern Tibetan Plateau. The identified distribution gap was consistent in all simulated scenarios from the last glacial maximum to the near future. Our results suggest that the South Asian summer monsoon system acts as a persistent ecological barrier maintaining the disjunct distribution of dry river valleydwelling plants in the western Himalayas and the Hengduan Mountains.

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“…It is mainly found in the main stream and tributaries in the middle reaches of the Yarlung Zangbo River in Tibet and has important economic and ecological value in this basin [5]. At present, the relevant research and reports mostly focus on the origin and evolution [6,7], chromosome number [8], mitochondrial genes [9,10], molecular phylogenesis [11,12], early morphological development [13,14], and growth and reproduction strategies [15,16]. Exploring the age structure of this fish is a prerequisite for understanding the dynamics of this population and maintaining the sustainable development of fishery.…”

Section: Introductionmentioning

confidence: 99%

A Review of the Age, Growth Characteristics, and Population Resources of Ptychobarbus dipogon in the Middle and Upper Reaches of the Yarlung Zangbo River

Gao

Zhou

et al. 2023

Water

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This paper applies the von Bertalanffy growth equation to study the age structure and growth characteristics of 210 Ptychobarbus dipogon collected in September 2019 in the middle and upper reaches of the Yarlung Zangbo River and employs FISAT II software to estimate the population characteristics’ parameters. Its aim is to provide a basis for the conservation of the population resources of the Ptychobarbus dipogon. In this study, the length of the catch ranged from 137 mm to 475 mm, the weight ranged from 44.04 g to 1142.80 g, the minimum age was 5 years, and the maximum age was 47 years. The body length–weight relationship was W(♀) = 4.1738 × 10−5L2.7687 (n = 86, R2 = 0.901); W(♂) = 2.7784 × 10−5L2.8434 (n = 100, R2 = 0.918). The growth equation was Lt(♀) = 505.000[1 − e−0.048(t−1.992)]; Lt(♂) = 452.254[1 − e−0.069(t−4.233)]; Wt(♀) = 1296.576[1 − e−0.048(t−1.992)]2.7687; Wt(♂) = 1001.872[1 − e−0.069(t−4.233)]2.8434. The inflection point ages of the female and male Ptychobarbus dipogon were 7.95 and 6.05, respectively. The exploitation rate of Ptychobarbus dipogon was 0.61, which exceeds the optimum exploitation rate of resources (0.57). The population resources are overfished. It is suggested to strengthen the conservation of Ptychobarbus dipogon population resources and the protection of native fish on the Qinghai–Tibet Plateau.

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River capture in the middle reaches of the palaeo-Yarlung Zangbo River

Cited by 5 publications

References 12 publications

Food and Grain Consumption Per Capita in the Qinghai–Tibet Plateau and Implications for Conservation

Food and Grain Consumption Per Capita in the Qinghai–Tibet Plateau and Implications for Conservation

The South Asian monsoon maintains the disjunction of Rumex hastatus between the western Himalayas and the Hengduan Mountains, southwest China

A Review of the Age, Growth Characteristics, and Population Resources of Ptychobarbus dipogon in the Middle and Upper Reaches of the Yarlung Zangbo River

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