The imbalance of the Asian water tower

Nature Reviews Earth & Environment, Journal Year: 2022, Volume and Issue: 3(10), P. 618 - 632

Published: June 7, 2022

Language: Английский

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Process, mechanisms, and early warning of glacier collapse-induced river blocking disasters in the Yarlung Tsangpo Grand Canyon, southeastern Tibetan Plateau

The Science of The Total Environment, Journal Year: 2021, Volume and Issue: 816, P. 151652 - 151652

Published: Nov. 13, 2021

Language: Английский

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Contrasting characteristics, changes, and linkages of permafrost between the Arctic and the Third Pole

Earth-Science Reviews, Journal Year: 2022, Volume and Issue: 230, P. 104042 - 104042

Published: May 6, 2022

Language: Английский

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Recent intensified erosion and massive sediment deposition in Tibetan Plateau rivers

Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)

Published: Jan. 24, 2024

Recent climate change has caused an increase in warming-driven erosion and sediment transport processes on the Tibetan Plateau (TP). Yet a lack of measurements hinders our understanding basin-scale dynamics associated spatiotemporal changes. Here, using satellite-based estimates suspended sediment, we reconstruct quantitative history patterns major headwater basins from 1986 to 2021. Out 13 warming-affected regions, 63% rivers have experienced significant increases flux. Despite such intensified erosion, find that 30% total flux been temporarily deposited within rivers. Our findings reveal pronounced heterogeneity across basins. The recurrent fluctuations erosion-deposition river channels not only result underestimation magnitude but also drive continuous transformations valley morphology, thereby endangering local ecosystems, landscape stability, infrastructure project safety.

Language: Английский

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The Dynamic Monitoring and Driving Forces Analysis of Ecological Environment Quality in the Tibetan Plateau Based on the Google Earth Engine

Remote Sensing, Journal Year: 2024, Volume and Issue: 16(4), P. 682 - 682

Published: Feb. 14, 2024

As a region susceptible to the impacts of climate change, evaluating temporal and spatial variations in ecological environment quality (EEQ) potential influencing factors is crucial for ensuring security Tibetan Plateau. This study utilized Google Earth Engine (GEE) platform construct Remote Sensing-based Ecological Index (RSEI) examined dynamics Plateau’s EEQ from 2000 2022. The findings revealed that RSEI Plateau predominantly exhibited slight degradation trend 2022, with multi-year average 0.404. Utilizing SHAP (Shapley Additive Explanation) interpret XGBoost (eXtreme Gradient Boosting), identified natural as primary influencers on Plateau, temperature, soil moisture, precipitation variables exhibiting higher values, indicating their substantial contributions. interaction between temperature showed positive effect RSEI, value increasing rising precipitation. methodology results this could provide insights comprehensive understanding monitoring dynamic evolution amidst context change.

Language: Английский

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Reconstructed eight-century streamflow in the Tibetan Plateau reveals contrasting regional variability and strong nonstationarity

Nature Communications, Journal Year: 2022, Volume and Issue: 13(1)

Published: Oct. 27, 2022

Short instrumental streamflow records in the South and East Tibetan Plateau (SETP) limit understanding of full range long-term variability streamflow, which could greatly impact freshwater resources for about one billion people downstream. Here we reconstruct eight centuries (1200-2012 C.E.) annual from Monsoon Asia Drought Atlas five headwater regions across SETP. We find two regional patterns, including northern (Yellow, Yangtze, Lancang-Mekong) southern (Nu-Salween Yarlung Zangbo-Brahmaputra) SETP showing ten contrasting wet dry periods, with a dividing line moisture regimes at ~32°-33°N identified. demonstrate strong temporal nonstationarity variability, reveal much greater high/low mean flow periods terms duration magnitude: mostly pre-instrumental wetter conditions Zangbo-Brahmaputra drier other rivers. By contrast, frequency extreme flows during Nu-Salween, has increased by ~18% relative to periods.

Language: Английский

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The quantitative attribution of climate change to runoff increase over the Qinghai-Tibetan Plateau

The Science of The Total Environment, Journal Year: 2023, Volume and Issue: 897, P. 165326 - 165326

Published: July 5, 2023

Language: Английский

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Hydrological response to climate change and human activities in the Three-River Source Region

Hydrology and earth system sciences, Journal Year: 2023, Volume and Issue: 27(7), P. 1477 - 1492

Published: April 5, 2023

Abstract. The Three-River Source Region (TRSR), which is known as “China's Water Tower” and affects the water resources security of 700 million people living downstream, has experienced significant hydrological changes in past few decades. In this work, we used an extended variable infiltration capacity (VIC) land surface hydrologic model (VIC-Glacier) coupled with degree-day factor algorithm to simulate runoff change TRSR during 1984–2018. VIC-Glacier performed well TRSR, Nash–Sutcliffe efficiency (NSE) above 0.68, but it was sensitive quality limited ground-based precipitation. This especially marked source region Yangtze River: when Precipitation Estimation from Remotely Sensed Information Using Artificial Neural Networks – Climate Data Record (PERSIANN-CDR), better spatial details, instead precipitation, NSE Tuotuohe station increased 0.31 0.86. well-established model, studied contribution each component (rainfall, snowmelt, glacier runoff) total causes runoff. results indicate that rainfall contributed over 80 % runoff, while snowmelt both less than 10 main reason for increase after 2004, accounting 75 %–89 %, except catchment monitored by Xialaxiu station. Among climate factors, precipitation had greatest impact on Finally, through a series hypothetical scenario experiments, found future simultaneous temperature would might remain unchanged because even seasonal fluctuations, basically completely compensated decreased solid-to-liquid ratio. These findings improve our understanding processes provide insights policy-makers how optimally allocate manage response global change.

Language: Английский

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Key Pathways to Achieve Sustainable Development Goals in Three Polar Regions

Sustainability, Journal Year: 2023, Volume and Issue: 15(2), P. 1735 - 1735

Published: Jan. 16, 2023

Due to the local and natural characteristics of high latitude altitude in Three Polar Region (TPR)—that is, Antarctic, Arctic, Qinghai-Tibet Plateau (QTP)—this region has been significantly affected by climate change related disasters. Thus, sustainable development pathway for TPR is different from that other regions. The Antarctic region, as a public territory, experiences sustainability problems are mainly result integrated impact tourism scientific commercial fishing activities on continent ocean. Understanding how build shared, co-built, co-governed, legally binding equal international multilateral partnership or treaty, thereby reducing water life land life, key achieving goals (SDGs). Arctic both level at national low within country, including livelihood indigenous people. Learning effectively deal with domestic imbalance future SDGs. QTP fragile ecology single industry. As relatively poor area China, ability promote ecological protection improve people’s welfare through policies SDGs QTP. At same time, also needs enhance its resilience action mitigate impacts change. On this basis, fully achieve support TPR, it necessary establish pursue cooperation science research, infrastructure, commerce, energy, mining trades. an important part system, spatial temporal changes have direct indirect global spheres (e.g., Anthroposphere) affect process. Therefore, TPR’s linkage cooperation, can simultaneously enter track.

Language: Английский

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Glaciers determine the sensitivity of hydrological processes to perturbed climate in a large mountainous basin on the Tibetan Plateau

Hydrology and earth system sciences, Journal Year: 2024, Volume and Issue: 28(3), P. 669 - 689

Published: Feb. 15, 2024

Abstract. The major rivers on the Tibetan Plateau supply important freshwater resources to riparian regions but have been undergoing significant climate change in recent decades. Understanding sensitivities of hydrological processes is for water resource management, large divergences exist previous studies because uncertainties models and projection data. Meanwhile, spatial pattern local was poorly explored despite strong heterogeneity Plateau. This study adopted perturbation method analyze a typical mountainous basin (Yarlung Tsangpo River, YTR) change. We utilized tracer-aided model Tsinghua Representative Elementary Watershed-Tracer-aided version (THREW-T) simulate cryospheric YTR basin. Multiple datasets internal stations were used validate provide confidence baseline simulation sensitivity analysis. Results indicated that (1) THREW-T performed well simulating streamflow, snow cover area (SCA), glacier mass balance (GMB) stream isotope, ensuring good representation key reasonable estimation runoff components. acceptably streamflow at eight located mainstream two tributaries, indicating reflected by model. (2) Increasing temperature led decreasing annual runoff, smaller inter-annual variation, more even intra-annual distribution an earlier maximum runoff. It also influenced regime increasing contributions rainfall melt overland subsurface snowmelt precipitation had opposite effect temperature. (3) response varied significantly, with changing rate −18.6 % 54.3 5∘ warming. ratio (GAR) dominant factor both perturbed precipitation. Some non-monotonic perturbation, which represented most dynamic within basin, as they kept shifting between energy- water-limited stages. GAR mean (MAP) linear relation formed boundary different trends GAR–MAP plot.

Language: Английский

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