氮在气候变化、人类健康和农业等领域发挥着重要作用。一位研究人员认为，气候模型若能更全面地纳入氮的影响，将会受益匪浅。
nitrogen
Posted inResearch Spotlights
Global Climate Models Need the Nitrogen Cycle—All of It
Nitrogen plays important roles in areas including climate change, human health, and agriculture. A researcher argues that climate models would benefit from more fully incorporating its influence.
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A medida que el Ártico se calienta, los suelos pierden nutrientes clave
El cambio climático calienta tanto el aire y el océano, como el suelo, donde los procesos clave que determinan la fertilidad y la captura de carbono operan en un delicado equilibrio.
Posted inResearch Spotlights
How Plant-Fungi Friendships Are Changing
A new framework shows how much carbon plants allocate to their endosymbionts and how that amount might change in the face of warming soil and rising carbon dioxide levels.
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Shallow Injection Imperfectly Filters Florida Wastewater
Injection of wastewater into shallow wells is meant to filter nutrients like nitrogen and phosphorus out of the wastewater. But a new study suggests that nutrients aren’t entirely eliminated—and may be polluting coastal waters.
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Free-Roaming Bison Graze Life into Grasslands
A new study suggests that Yellowstone’s herd of bison accelerates nutrient cycling, offering a glimpse into the North American plains of yesteryear.
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Nitrogen Needs Could Be Limiting Nature’s Carbon Capacity
A new study suggests that past calculations of biological nitrogen fixation were overestimated by up to 66%—and that farms growing nitrogen-fixing crops may be filling in the gaps, for better or worse.
Posted inResearch Spotlights
Arctic Rivers Trade Inorganic Nitrogen for Organic
Climate change is shifting the makeup of a key nutrient in rivers across Russia, Alaska, and Canada, with the potential for ecosystem-wide impacts.
Posted inNews
As the Arctic Warms, Soils Lose Key Nutrients
Climate change heats not only the air and the ocean but also the soil, where key processes that determine fertility and carbon sequestration operate in a fine-tuned balance.
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A Great Whale Conveyor Belt Transports Nutrients Across Oceans
Baleen whales shift huge amounts of nutrients, including nitrogen, from high-latitude feeding waters to tropical breeding areas.