Sustainability, Journal Year: 2025, Volume and Issue: 17(5), P. 2024 - 2024
Published: Feb. 26, 2025
Lake areas across the Tibet Plateau have been taken as major indicator of water resources changes. However, drivers behind spatiotemporal variations lake over remained obscure. Selin Co is largest in Qinghai–Tibet Plateau. Here, we delineate area changes during period 1988–2023 based on Landsat remote sensing data. We also delved into causes from perspectives glacier and tracing vapor sources. identified persistently increasing Lake. The reached 2462.59 km2 2023. delineated basin found a generally decreasing tendency main glaciers within basin. Specifically, loss Geladandong Glacier 17.39 total Jiagang 76.42 km2. that melting precipitation are prime area. In basin, approximately 89.12% evaporation source propagated external to by westerlies Indian monsoon. internal hydrological circulation rate 10.88%, while 30.61% moisture transportation sourced ocean, 69.39% continental land. ocean shows significant trend, which may contribute continued expansion
Language: Английский
Citations
0第三极地区高分辨率近地面气象驱动数据研制
SCIENTIA SINICA Terrae, Journal Year: 2025, Volume and Issue: unknown
Published: March 1, 2025
Citations
0Methane emissions from thermokarst lakes must emphasize the ice-melting impact on the Tibetan Plateau
Nature Communications, Journal Year: 2025, Volume and Issue: 16(1)
Published: March 11, 2025
Abstract Thermokarst lakes, serving as significant sources of methane (CH 4 ), play a crucial role in affecting the feedback permafrost carbon cycle to global warming. However, accurately assessing CH emissions from these lakes remains challenging due limited observations during lake ice melting periods. In this study, by integrating field surveys with machine learning modeling, we offer comprehensive assessment present and future thermokarst on Tibetan Plateau. Our results reveal that previously underestimated release bubble water storage periods is 11.2 ± 1.6 Gg C , accounting for 17 4% annual total lakes. Despite cover only 0.2% area, they annually emit 65.5 10.0 which offsets 6.4% net sink alpine grasslands plateau. Considering loss ice, expansion projected lead 1.1–1.2 folds increase 2100. study allows foreseeing rapid expanding sheds new lights processes controlling carbon-climate ecosystems.
Language: Английский
Citations
0Glacier Meltwater Input and Salinity Decline Promote Algal Growth in a Tibetan Saline Lake
Freshwater Biology, Journal Year: 2025, Volume and Issue: 70(3)
Published: March 1, 2025
ABSTRACT Global warming has caused widespread shifts in lake hydrological conditions due to the increasing glacial meltwater input on Tibetan Plateau. It is anticipated that favourable for algal growth will be developed as a result of rise temperature, nutrient supply and salinity decline. However, long‐term ecological process rarely explored, underlying mechanism remains poorly understood. Here, we investigated Bangdag Co., glacier‐fed high‐salinity located northwest Plateau, which been experiencing rapid expansion recent decades. We reconstructed community dynamics using sedimentary subfossil pigments explore lake's trajectory over past century. Combining remote sensing regional instrumental data, analysed how ecosystem responds climate warming, hydroclimatic change, their interactions. Our results showed pigment assemblages from total algae, chlorophytes, siliceous algae cyanobacteria were well‐preserved stable before 2000s, followed by an accelerated abundance increase with expansion. Random forest structural equation modelling analyses revealed shift was attributed input, decline warming. analysis demonstrates elevated prior 2000 hindered phytoplankton growth, suggesting ongoing melting dilution are restructuring saline ecosystems world. This study improves understanding primary producer succession inhabiting hypersaline environments emphasising significant impact induced dynamics.
Language: Английский
Citations
0Physical and biogeochemical responses of Tibetan Plateau lakes to climate change
Nature Reviews Earth & Environment, Journal Year: 2025, Volume and Issue: unknown
Published: March 18, 2025
Language: Английский
Citations
0Mechanisms of climate-induced lake dynamics in the Source Region of Three Rivers, Tibetan Plateau
Journal of Hydrology Regional Studies, Journal Year: 2025, Volume and Issue: 59, P. 102323 - 102323
Published: March 22, 2025
Language: Английский
Citations
0Recent large-inland-lake outbursts on the Tibetan Plateau: processes, causes, and mechanisms
Natural hazards and earth system sciences, Journal Year: 2025, Volume and Issue: 25(3), P. 1187 - 1206
Published: March 26, 2025
Abstract. Research into lake outburst events has been mainly focused on small glacial lakes in the Himalaya, while historical from large inland are few and have received less attention. Large Tibetan Plateau expanding rapidly, with recent signs of increasing risk, highlighting need to elucidate their processes, causes, mechanisms mitigate future impacts. Here, long-term satellite mapping shows that number surface area exhibited an trend over past 50 years, peaking 2023. Two notable occurred during this period: Zonag Lake (∼ 150 km2 2023) 15 September 2011 Selin Co 2465 2023, largest Tibet) 21 The cascading caused its shrink by ∼ 124 (−45 %), downstream Yanhu expanded 163 (+347 %). resulted a water mass loss 0.3 Gt, Bange experienced level rise 2.3 m expansion 18 %. Despite storage capacity, due flat terrain at breach slow flow 1 s−1 damaged road), average discharge 154 m3 s−1. Even low discharge, flood breached lowland road within 10 h. In contrast, steep facilitated rapid sustained volume water, 2238 only short period drainage reorganization contrast permanent Lake. underlying increased precipitation as main trigger for two prior occurrence different. For Lake, thermodynamic effects, i.e., changes atmospheric moisture, most important, Co, dynamical vertical moisture motion induced circulation, dominate patterns. Large-lake outbursts inner expected increase near warmer wetter climate, urgent policy planning is needed potential lake-induced damage.
Language: Английский
Citations
0Annual 30 m land cover dataset on the Tibetan Plateau from 1990 to 2023
Scientific Data, Journal Year: 2025, Volume and Issue: 12(1)
Published: March 27, 2025
Accurate land cover data was fundamental for formulating sound planning and sustainable development strategies. This study focused on the Tibetan Plateau (TP), a globally sensitive ecological area, developed locally tailored annual 30 m resolution dataset from 1990 to 2023 (TPLCD). Leveraging Google Earth Engine (GEE) platform Landsat processing, LandTrendr employed generate robust, high-precision training samples. Subsequently, random forest classification spatiotemporal smoothing strategies were applied precisely map dynamics of TP. Rigorous validation through visual interpretation, authoritative third-party datasets (Geo-Wiki GLCVSS), thematic cross-comparisons, revealed an overall accuracy 84.8%, Kappa coefficient 0.78, fully affirming dataset's high reliability. provided invaluable empirical evidence understanding vulnerability adaptability TP's ecosystem.
Language: Английский
Citations
0Meltwater‐Induced Lake Freshening and Muted Warming in Northern China Under Contemporary Global Warming
Geophysical Research Letters, Journal Year: 2025, Volume and Issue: 52(6)
Published: March 25, 2025
Abstract Despite clearly documented in instrumental temperature records, the warming amplitude over current warm period (CWP) inferred from lacustrine archive is very limited. The potential role of meltwater pulses lake hydrology and their influence on water under anthropogenic remain poorly investigated. Here we present summarize records northern China to address effects last millennium. Our results show abrupt freshening muted CWP, which appears have also occurred along with climatic previously. Hence, substantial lakes, a transient response warming, could partly account for CWP as indicated by records.
Language: Английский
Citations
0Hydrological Changes Caused by Integrated Warming, Wetting, and Greening in Permafrost Regions of the Qinghai‐Tibetan Plateau
Water Resources Research, Journal Year: 2025, Volume and Issue: 61(4)
Published: April 1, 2025
Abstract The Qinghai‐Tibetan Plateau (QTP) has undergone significant warming, wetting, and greening (WWG) over decades, alongside substantial alterations in hydrological regimes. These changes present great challenges for safeguarding water resources ecosystems downstream. However, the lack of field observation systematic research obscured our understanding how processes respond to combined influences climate‐permafrost‐vegetation. This study focuses on source regions Yangtze River, one highest permafrost‐covered basins QTP, employs a process‐based model quantify effects WWG processes. We show that increasing precipitation dominates subsurface runoff while rising temperature primarily affects surface by reducing frozen duration (−52 days/century) thickening active layer (+2.4 cm/year). Greening vegetation transpiration interception evaporation. Warming, will cause transition dynamics from dominance permafrost basins, reduce risk both flooding shortage indicated decreased maximum low flow high 11.0 5.0 days/year, respectively. Moreover, cold exhibit greater propensity generating runoff, as higher annual increase coefficient (0.005/year) total (4.81 mm/year), compared warm (with 0.001/year 1.20 mm/year, respectively). findings enhance due provide insights management under climate change.
Language: Английский
Citations
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