#qinghai — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #qinghai, aggregated by home.social.
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Rock Weathering Can Counteract River CO2 Emissions Induced By Permafrost Thaw
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https://doi.org/10.1038/s41586-026-10664-8 <-- shared paper
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H/T @aaron Bufe
“[The researchers] measured carbon emissions and water chemistry in 50 headwater rivers draining 780,000 km² of the Tibetan Plateau.
The rivers flow in landscapes underlain by continuous permafrost and landscapes in which the permafrost has retreated since the last glacial maximum. They collect[ed] organic carbon from soils and dissolved inorganic carbon that is fixed by rock-weathering.
Where the permafrost cover is continuous, rivers emit CO2 from degrading (permafrost) soil carbon. Weathering reactions in these catchments are relatively slow.
In landscapes with (almost) no permafrost, carbon fluxes from weathering are faster than CO2 emissions from rivers.
Thus, as permafrost landscapes transition to landscapes without permafrost cover, chemical weathering reactions may play an ever more important role in riverine carbon cycling.
Interestingly, weathering can affect the carbon cycle in different ways. Where sulfide minerals are present, weathering reactions can emit CO2. Where silicate minerals dominate, weathering draws down CO2 from the atmosphere…”
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“Climate-induced permafrost thaw unlocks large stores of organic carbon that are mineralized and emitted as carbon dioxide (CO2) from rivers to the atmosphere. Concurrently, warming and permafrost thaw can increase mineral weathering rates, thus affecting the release and sequestration of inorganic carbon. Yet how these biological and geological carbon cycles interact and jointly affect CO2 dynamics (emission compared with drawdown) in permafrost rivers remains unknown. Here [they] combine[d] CO2 emissions, organic and inorganic solute concentrations, dual carbon isotopes (δ13C–Δ14C) and geochemical modelling to infer how permafrost thaw may affect river biogeochemistry over decades to centuries across the Qinghai–Tibet Plateau. Leveraging a gradient of thermal permafrost degradation, we find that river CO2 emissions decline, whereas solute fluxes from rock weathering increase with decreasing permafrost cover. Across this region, net CO2 drawdown fluxes from rock weathering are about 35% of river CO2 emissions, varying from around 15% in catchments with continuous permafrost to more than 100% in catchments with discontinuous or isolated permafrost. Thus, carbon fluxes from chemical weathering may become increasingly important with ongoing permafrost thaw, potentially even outpacing river CO2 emissions. [Their] findings disentangle the interplay between biological and geological carbon fluxes that are important for the cryosphere and the global carbon cycle…”
#permafrost #melting #thaw #climatechange #warming #Tibet #TibetanPlateau #Qinghai #water #hydrology #carbonemissions #CO2 #emissions #waterchemistry #waterquality #cryosphere #sediment #sedimentation #weathering #rock #carbon #river #riverine #carboncyling #geochemistry #biology #geology #soil -
Rock Weathering Can Counteract River CO2 Emissions Induced By Permafrost Thaw
--
https://doi.org/10.1038/s41586-026-10664-8 <-- shared paper
--
H/T @aaron Bufe
“[The researchers] measured carbon emissions and water chemistry in 50 headwater rivers draining 780,000 km² of the Tibetan Plateau.
The rivers flow in landscapes underlain by continuous permafrost and landscapes in which the permafrost has retreated since the last glacial maximum. They collect[ed] organic carbon from soils and dissolved inorganic carbon that is fixed by rock-weathering.
Where the permafrost cover is continuous, rivers emit CO2 from degrading (permafrost) soil carbon. Weathering reactions in these catchments are relatively slow.
In landscapes with (almost) no permafrost, carbon fluxes from weathering are faster than CO2 emissions from rivers.
Thus, as permafrost landscapes transition to landscapes without permafrost cover, chemical weathering reactions may play an ever more important role in riverine carbon cycling.
Interestingly, weathering can affect the carbon cycle in different ways. Where sulfide minerals are present, weathering reactions can emit CO2. Where silicate minerals dominate, weathering draws down CO2 from the atmosphere…”
--
“Climate-induced permafrost thaw unlocks large stores of organic carbon that are mineralized and emitted as carbon dioxide (CO2) from rivers to the atmosphere. Concurrently, warming and permafrost thaw can increase mineral weathering rates, thus affecting the release and sequestration of inorganic carbon. Yet how these biological and geological carbon cycles interact and jointly affect CO2 dynamics (emission compared with drawdown) in permafrost rivers remains unknown. Here [they] combine[d] CO2 emissions, organic and inorganic solute concentrations, dual carbon isotopes (δ13C–Δ14C) and geochemical modelling to infer how permafrost thaw may affect river biogeochemistry over decades to centuries across the Qinghai–Tibet Plateau. Leveraging a gradient of thermal permafrost degradation, we find that river CO2 emissions decline, whereas solute fluxes from rock weathering increase with decreasing permafrost cover. Across this region, net CO2 drawdown fluxes from rock weathering are about 35% of river CO2 emissions, varying from around 15% in catchments with continuous permafrost to more than 100% in catchments with discontinuous or isolated permafrost. Thus, carbon fluxes from chemical weathering may become increasingly important with ongoing permafrost thaw, potentially even outpacing river CO2 emissions. [Their] findings disentangle the interplay between biological and geological carbon fluxes that are important for the cryosphere and the global carbon cycle…”
#permafrost #melting #thaw #climatechange #warming #Tibet #TibetanPlateau #Qinghai #water #hydrology #carbonemissions #CO2 #emissions #waterchemistry #waterquality #cryosphere #sediment #sedimentation #weathering #rock #carbon #river #riverine #carboncyling #geochemistry #biology #geology #soil -
#ChoktrulDorjeTenRinpoche, leader religioso e educativo tibetano, è disperso dal dicembre 2025 dopo essere stato presumibilmente preso in custodia dalle autorità cinesi della provincia di #Qinghai.
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#ChoktrulDorjeTenRinpoche, leader religioso e educativo tibetano, è disperso dal dicembre 2025 dopo essere stato presumibilmente preso in custodia dalle autorità cinesi della provincia di #Qinghai.
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Tra strani tubi extraterrestri, l’irrisolto enigma della Montagna Bianca del Qinghai
https://www.jacoporanieri.com/blog/?p=44276#strutture #geologia #misteri #enigmi #extraterrestri #scienza #alieni #cina #qinghai #montagna #sottosuolo #tubi #manufatti #formazioni #civiltà #ossidi #ferro #metalli #studio #ipotesi #teorie #strano #asia #roccia #radici #fessure #preistoria #piramidi #rocce #caverne
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Yingcheng Wang et al.
Selective recruitment of #CoreRhizobacterial communities with distinct life-history strategies by two grass genera#DominantGrass | #FunctionalPredictions | #r/K-selectionTheory | #Qinghai–TibetanPlateauRegion
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⭐ The relationships between alpine grasslands plants🌳 and their rhizobacteria🦠
Plants:
Poa Linn & Stipa Linn#CoreRhizobacteria:
1️⃣ P. Linn: r-strategists ➡️ prioritizes rapid resource acquisition
2️⃣ S. Linn: K-strategists ➡️ stress tolerance#DominantGrass | #FunctionalPredictions | #r/K-selectionTheory | #Qinghai–TibetanPlateauRegion
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【EDITOR'S CHOICE】
Flower surface is warmer in center than at edges in alpine plants: evidence from #Qinghai-TibetanPlateau#FlowerShape | #FlowerTraits | #ReproductiveSuccess | #ThermalPattern
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Shepherd by MelindaChan ^..^
https://tmblr.co/Z7VXvxgEHPsDiW00
#qinghai #青海 #china #sheperd #sheep #grass #grassland #flickr #thingsdavidlikes
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Shepherd by MelindaChan ^..^
https://tmblr.co/Z7VXvxgEHPsDiW00
#qinghai #青海 #china #sheperd #sheep #grass #grassland #flickr #thingsdavidlikes
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Highly Pathogenic Avian #Influenza A Virus in Wild Migratory #Birds, #Qinghai Lake, China, 2022, Emerg Infect Dis.: https://wwwnc.cdc.gov/eid/article/30/10/24-0460_article
In July 2022, an outbreak of highly pathogenic avian influenza A(#H5N1) virus clade 2.3.4.4b occurred among migratory birds at Qinghai Lake in China. The virus circulated in June, and reassortants emerged after its introduction into the area. Surveillance in 2023 showed that the virus did not establish a stable presence in wild waterfowl.
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Highly Pathogenic Avian #Influenza A Virus in Wild Migratory #Birds, #Qinghai Lake, China, 2022, Emerg Infect Dis.: https://wwwnc.cdc.gov/eid/article/30/10/24-0460_article
In July 2022, an outbreak of highly pathogenic avian influenza A(#H5N1) virus clade 2.3.4.4b occurred among migratory birds at Qinghai Lake in China. The virus circulated in June, and reassortants emerged after its introduction into the area. Surveillance in 2023 showed that the virus did not establish a stable presence in wild waterfowl.
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#China (People's Rep. of) - #Influenza A #H5N1 viruses of high pathogenicity (Inf. with) (non-poultry including wild birds) (2017-) - Immediate notification, WOAH: https://wahis.woah.org/#/in-review/5676
Wild birds in #Qinghai.
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#China (People's Rep. of) - #Influenza A #H5N1 viruses of high pathogenicity (Inf. with) (non-poultry including wild birds) (2017-) - Immediate notification, WOAH: https://wahis.woah.org/#/in-review/5676
Wild birds in #Qinghai.
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Officials say death toll from the earthquake which hit #Gansu #Qinghai border region is now 131 dead + 980 injured. They’re saying the rescue effort is now basically done and that the focus has switched to treating injuries and shelter for those who’ve lost their homes. #China https://nitter.hongkongers.net/StephenMcDonell/status/1737313665878311165#m
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Officials say death toll from the earthquake which hit #Gansu #Qinghai border region is now 131 dead + 980 injured. They’re saying the rescue effort is now basically done and that the focus has switched to treating injuries and shelter for those who’ve lost their homes. #China https://nitter.hongkongers.net/StephenMcDonell/status/1737313665878311165#m
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R to @StephenMcDonell: Officials say death toll now 118, with nearly 580 injured after a powerful, shallow, earthquake hit the Tibetan Plateau just before midnight. Thousands of rescue workers have been rushed to #Gansu Province and neighbouring #Qinghai. #China https://nitter.hongkongers.net/StephenMcDonell/status/1737001479427313798#m
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R to @StephenMcDonell: Officials say death toll now 118, with nearly 580 injured after a powerful, shallow, earthquake hit the Tibetan Plateau just before midnight. Thousands of rescue workers have been rushed to #Gansu Province and neighbouring #Qinghai. #China https://nitter.hongkongers.net/StephenMcDonell/status/1737001479427313798#m
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An Earthquake along the border of #Qinghai and #Gansu Provinces has left at least 111 people dead, with damage to roads, electricity and water infrastructure. Rescue efforts continue in freezing weather at minus -13 degrees. Very tough conditions for rescuers. #China https://nitter.hongkongers.net/StephenMcDonell/status/1736929690479480882#m
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An Earthquake along the border of #Qinghai and #Gansu Provinces has left at least 111 people dead, with damage to roads, electricity and water infrastructure. Rescue efforts continue in freezing weather at minus -13 degrees. Very tough conditions for rescuers. #China https://nitter.hongkongers.net/StephenMcDonell/status/1736929690479480882#m
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UPDATE [19.12-02:00] #Xining #Lanzhou #Qinghai #Gansu #Cina #China
STRONG #EARTHQUAKE
FUERTE #SISMO #TEMBLOR
FORTE #TERREMOTO
(M 6.0 18.12.2023)
Bilancio provvisorio: +111 morti, +200 feriti (alcuni gravemente) e un numero imprecisato di #dispersi.
Informazioni e aggiornamenti: https://www.emergenza24.org/cina-terremoto-18-12-2023/ -
UPDATE [19.12-02:00] #Xining #Lanzhou #Qinghai #Gansu #Cina #China
STRONG #EARTHQUAKE
FUERTE #SISMO #TEMBLOR
FORTE #TERREMOTO
(M 6.0 18.12.2023)
Bilancio provvisorio: +111 morti, +200 feriti (alcuni gravemente) e un numero imprecisato di #dispersi.
Informazioni e aggiornamenti: https://www.emergenza24.org/cina-terremoto-18-12-2023/ -
China earthquake latest news: Xinhua News Agency reported that 86 died in Gansu and another nine in neighbouring Qinghai province in the quake.
#China #Gansu #Qinghai
https://www.hindustantimes.com/world-news/95-killed-in-6-2-magnitude-earthquake-in-chinas-gansu-and-qinghai-provinces-101702943173961.html -
China earthquake latest news: Xinhua News Agency reported that 86 died in Gansu and another nine in neighbouring Qinghai province in the quake.
#China #Gansu #Qinghai
https://www.hindustantimes.com/world-news/95-killed-in-6-2-magnitude-earthquake-in-chinas-gansu-and-qinghai-provinces-101702943173961.html -
Mass Iris Scan Collection in Qinghai
2019–2022Excellent new report from @citizenlab (Emile Dirks) on intelligence-led policing, #surveillance, and #biometrics, in #Qinghai (49.4% non-Han, including #Tibetans and #Hui) https://citizenlab.ca/2022/12/mass-iris-scan-collection-in-qinghai/
ILP strategy targeting “suspicious people” (可疑人员) and target personnel, (重点人员): "Through mass iris scan collection, Qinghai’s police are effectively treating entire communities as populated by potential threats to social stability"