Declines in anthropogenic mercury emissions in the Global North and China offset by the Global South

Nature Communications, Journal Year: 2025, Volume and Issue: 16(1)

Published: Jan. 30, 2025

Human activities have emitted substantial mercury into the atmosphere, significantly impacting ecosystems and human health worldwide. Currently, consistent methodologies to evaluate long-term emissions across countries industries are scant, hindering efforts prioritize emission controls. Here, we develop a high-spatiotemporal-resolution dataset comprehensively analyze global anthropogenic patterns. We show that increased 330% during 1960–2021, with declines in developed Global North since 1990s China 2010s completely offset by rapid growth South (excluding China). Consequently, continued rise slightly 2013 Minamata Convention. In 2021, produced two-thirds of emissions, despite comprising only one-fifth economy. predict that, although large uncertainties exist, under business-as-usual scenario could increase 10%-50% 2030. Our findings demonstrate control has reached critical juncture, highlighting urgent need target reductions prevent worsening environmental impacts. from South, which now produces emissions. Without action, 10%–50%

Language: Английский

---

Land use and cover change accelerated China’s land carbon sinks limits soil carbon

npj Climate and Atmospheric Science, Journal Year: 2024, Volume and Issue: 7(1)

Published: Aug. 27, 2024

Land use and cover change (LUCC) significantly impacts global carbon cycles land surface properties, accounting for 25% of the historical atmospheric CO2 increase. We explore a previously overlooked role LUCC in driving cycle by using three-level meta-analysis Use Harmonization data to drive an ecosystem model. Our findings reveal that loss 39.2% soil organic (SOC) China due LUCC, mitigated afforestation, doubles gross primary productivity at 0.02 Pg C yr−1, countering central China's urbanization decline. Indirect climate effects, especially bulk density, impact SOC compared direct effects. has increased Chinese terrestrial sink, with net reaching ± 0.12 yr−1. study underscores importance reforestation afforestation addressing enhancing sinks future management.

Language: Английский

---

Oceanic evasion fuels Arctic summertime rebound of atmospheric mercury and drives transport to Arctic terrestrial ecosystems

Nature Communications, Journal Year: 2025, Volume and Issue: 16(1)

Published: Jan. 21, 2025

Mercury (Hg) contamination poses a persistent threat to the remote Arctic ecosystem, yet mechanisms driving pronounced summer rebound of atmospheric gaseous elemental Hg (Hg0) and its subsequent fate remain unclear due limitations in large-scale seasonal studies. Here, we use an integrated atmosphere–land–sea-ice–ocean model simulate cycling comprehensively. Our results indicate that oceanic evasion is dominant source (~80%) Hg0 rebound, particularly driven by seawater release facilitated ice melt (~42%), with further contributions from anthropogenic deposition terrestrial re-emissions. Enhanced dry across coastal regions, especially tundra, during highlights potential transport pristine Ocean ecosystems. warming, transition multi-year first-year tundra greening, expected amplify intensify uptake increased vegetation growth, underlining urgent need for continued research evaluate mitigation strategies effectively context changing Arctic. The mercury has been debated decades. This study uses process-based show sea drives emissions increases highlighting key role

Language: Английский

---

Comparative Foliar Atmospheric Mercury Accumulation across Functional Types in Temperate Trees

Environmental Science & Technology, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 22, 2025

Vegetation assimilation of atmospheric gaseous elemental mercury (GEM) represents the largest dry deposition pathway in global terrestrial ecosystems. This study investigated Hg accumulation mechanisms deciduous broadleaves and evergreen needles, focusing on how ecophysiological strategies─reflected by δ13C, δ18O, leaf mass per area, matter content-mediated accumulation. Results showed that leaves exhibited higher total (THg) concentrations rates (THgrate), which were 85.3 ± 17.7 110.0 0.3% than those needles. The two tree types distinct strategies: broadleaves, with stomatal conductance photosynthetic rates, rapidly adjust stomata to changes meteorological pollutant factors, playing a key role controlling THgrate. In contrast, needles featured stable control, highlighting direct positive effect GEM their Precipitation wind speed negatively influenced foliar Correlations between PM2.5, NO2, THgrate suggested synergistic patterns pollutants. underscores across functional emphasizes importance species-specific strategies. An empirical model linking ecophysiological, meteorological, pollution factors was provided, contributing refinement models.

Language: Английский

---

Soil potentially toxic elements promote carbon metabolism in alpine meadows on the Qinghai-Xizang Plateau

European Journal of Soil Biology, Journal Year: 2025, Volume and Issue: 125, P. 103727 - 103727

Published: April 15, 2025

Language: Английский

---

Historical shifts in mercury deposition in northeastern China: From vegetation to human activity

Environmental Pollution, Journal Year: 2025, Volume and Issue: 374, P. 126290 - 126290

Published: April 19, 2025

Language: Английский

---

Honey production in the south by the Legal Amazon: a study on the potential contamination of mercury in apiaries

Environmental Science and Pollution Research, Journal Year: 2024, Volume and Issue: 31(58), P. 66422 - 66434

Published: Dec. 4, 2024

Language: Английский

---