Reconstruction of a century of air pollution history in Nanjing, China, using trace elements in situ leaf specimens of Platanus × hispanica and Pittosporum tobira

Environmental Pollution, Journal Year: 2024, Volume and Issue: 345, P. 123290 - 123290

Published: Jan. 2, 2024

Language: Английский

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Important Accumulated Mercury Pool in a Remote Alpine Forest and Dynamic Accumulation Revealed by Tree Rings in China's Qilian Mountains

Published: Jan. 1, 2024

Quantification of alpine forest mercury (Hg) pools is important for understanding the Hg assimilation, flux and even biogeochemical cycle in forests. We sampled soil, moss different tissues dominant Qinghai spruce (Picea crassifolia Kom.) to investigate concentration pool assess accumulation dynamics Qilian Mountains, northwestern China. Mean concentrations increase following order: trunk wood < branch root needle bark soil litterfall moss. Soil contained two orders magnitude higher than vegetation, accounted 92.2% total ecosystem. Moss a disproportionate 16.7% although making up only 2.7% vegetation biomass. Aboveground tree showed those broad-leaved, coniferous mixed forests China America. Dynamic indicated rise atmospheric enhanced biomass contributed assimilation remote forest, especially after 1960s. Our results underscore relatively high levels aboveground reveal notable accumulation, which attributed rising background levels. suggest that when assessing ecosystems, it imperative consider both variability exposure capacity vegetation.

Language: Английский

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Comment on gmd-2024-65

Published: June 14, 2024

Abstract. The Multi-Compartment Hg (mercury) Modeling and Analysis Project (MCHgMAP) is an international multi-model research initiative intended to simulate analyze the geospatial distributions temporal trends of environmental inform effectiveness evaluations two multilateral agreements (MEAs): Minamata Convention on Mercury (MC) Long-Range Transboundary Air Pollution (LRTAP). This MCHgMAP overview paper presents its science objectives, background rationale, experimental design (multi-model ensemble (MME) architecture, inputs evaluation data, simulations reporting framework), methodologies for analysis simulated levels. primary goals project are facilitate detection attribution recent (observed) future (projected) spatial patterns global levels, identification key knowledge gaps in modeling improve cycles MEAs. current advances challenges models, emission inventories, observational data examined, optimized introduced addressing policy questions A common set emissions, conditions, observation datasets proposed (where possible) enhance MME comparability. novel harmonized simulation approach between atmospheric, land, oceanic multi-media models developed account short- long-term changes secondary exchanges achieve mechanistic consistency levels across matrices. comprehensive model experiments prioritized ensure a systematic participation variety from scientific community.

Language: Английский

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Important accumulated mercury pool in a remote alpine forest and dynamic accumulation revealed by tree rings in China's Qilian Mountains

The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 951, P. 175441 - 175441

Published: Aug. 14, 2024

Language: Английский

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Tree Rings Mercury Controlled by Atmospheric Gaseous Elemental Mercury and Tree Physiology

Environmental Science & Technology, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 9, 2024

Tree rings are an emerging atmospheric mercury (Hg) archive. Questions have arisen, though, regarding their mechanistic controls and reliability. Here, we report contrasting tree-ring Hg records in three collocated conifer species: Norway spruce (

Language: Английский

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