单词	throughfall
释义	throughfall /θruːfɔːl / noun [mass noun] The part of rainfall or other precipitation which falls to the forest floor from the canopy.Our unpublished work with mosses growing on logs in our study area indicates that the heavy metal content is much lower in moss exposed only to throughfall and incident rainfall, as compared to stemflow.... Mercury deposition to forest sites occurs mainly by means of litterfall, throughfall, and precipitation. Although throughfall is volumetrically greater than stemflow in most forests, stemflow is more enriched chemically.
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