研究表明，人为成因活性氮排放约27%进入内陆水域，其中硝酸根约占30%，这导致硝酸根（NO 3-）成为内陆水质恶化的一大元凶，甚至是全球2/3以上河口和海湾富营养化和死亡区（Dead zones）的主要诱因。此外，饮用高NO 3-的水会通过干扰血红蛋白结合氧气的能力而诱发高铁血红蛋白血症，威胁水生生物和人类健康。因此，河流NO 3-管控一直是全球水环境和健康保护的要务，关系到联合国可持续发展目标（ ...

Better tracking of these reactive compounds is essential for understanding how the atmosphere and terrestrial biosphere ...

Annual bacterial community cycle in a seasonally ice-covered river reflects environmental and climatic conditions Annual bacterial community cycle in a seasonally ice-covered river reflects ...

A fully resourced set of teaching materials for ESS Ecology Unit 2.3 – Biogeochemical cycles. A subtopic for the new IB Diploma Environmental Systems and Societies course, first assessment 2026, which ...

We all know Earth is special, but we may not fully appreciate how good we have it on this planet. Unlike its planetary neighbors, Earth has remained habitable for billions of years thanks to a ...

As tiny as they are, marine plankton play pivotal roles in biogeochemical cycles and sustaining aquatic ecosystems, producing ...

Life on Earth has long been understood to run on two main energy sources. One comes from sunlight, captured by photosynthesis. The other comes from chemical reactions, such as microbes feeding on ...