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Hubbard Brook Experimental Forest
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Graph of hydrogen ion concentration in water collected at Hubbard Brook Experimental Forest between 1960 and 2007.
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Hubbard Brook Experimental Forest

forest, New Hampshire, United States

Learn about this topic in these articles:

acid rain

  • nitrogen cycle
    In acid rain: History

    …North America is from the Hubbard Brook Experimental Forest in New Hampshire, U.S., where H+ concentration in precipitation declined by about 86 percent from the mid-1960s through 2016. Similar trends were also reflected in data collected at measuring stations located across the eastern United States, which reported a decrease of…

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