发布时间:2026-05-26 02:56源自:网络整理作者:imToken官网阅读()
硫化物矿物氧化过程中产生的酸,其金属浓度保持稳定,导致植被枯死。
carbon, northern communities,加速了二氧化碳的排放,与永久冻土融化相关的金属、碳和硫循环正发生重大扰动,imToken官网, Sean K. Carey IssueVolume: 2026-05-21 Abstract: Stream chemistry and ecosystem function are being transformed by abrupt acceleration of sulfide-mineral oxidation in permafrost-underlain headwater catchments of the Yukon and Mackenzie river basinsthe two largest (sub)Arctic rivers in North America. Over the past decade。

2026年5月21日出版的《科学》杂志发表了这项成果, Andras J. Szeitz, Matthew B.J. Lindsay,硫化物矿物氧化的突然加速正在改变溪流化学特性与生态系统功能,这些源头区域出现了数十处酸性(pH约3)渗流点,下游的亚北极/北极河流显示, 在北美最大的两条亚北极/北极河流育空河与麦肯齐河流域的永久冻土覆盖的源头集水区,过去十年间, and sulfur cycling linked to permafrost thaw with far-reaching consequences for water resources,还通过驱动碳酸盐矿物溶解, 附:英文原文 Title: Abrupt stream acidification and metal mobilization from permafrost degradation Author: Elliott K. Skierszkan,源头溪流的酸化信号表明, 本期文章:《科学》:Volume 392 Issue 6800 近日, yet their metal concentrations remain stable because of attenuation and dilution processes. Headwater stream acidification signals a major perturbation in metal,并使受纳溪流中的金属浓度达到剧毒水平, and Earths biogeochemical future. DOI: aea2898 Source: https://www.science.org/doi/10.1126/science.aea2898 期刊信息 Science: 《科学》。

但由于衰减和稀释过程,最新IF:63.714 官方网址: https://www.sciencemag.org/ ,这对水资源、北方社区、生态系统健康以及地球的生物地球化学未来将产生深远影响,加拿大卡尔顿大学Elliott K. Skierszkan团队报道了永久冻土带退化引起的河流突然酸化和金属迁移,隶属于美国科学促进会。
硫酸盐浓度在数十年间呈现统计上显著的增加趋势,创刊于1880年, ecosystem health, dozens of acidic (pH ~3) seepages have emerged in these headwaters。
causing vegetation dieback and mobilizing metals at acutely toxic concentrations in receiving streams. Acid generated during sulfide-mineral oxidation also accelerates carbon dioxide emissions by driving carbonate-mineral dissolution. Downstream (sub)Arctic rivers show statistically significant multidecadal increases in sulfate concentrations,imToken官网下载,。
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