Capture of Atmospheric Ammonium by Grassland Canopies

作者：Gerrit W. Heil, M. J. A. Werger, W. de Mol, Douwe Van Dam, B. Heijne · 发表于：Science · 年份：1988 · DOI：10.1126/science.239.4841.764 · 被引用次数：89 · 研究领域：Botany and Plant Ecology Studies、Botany, Ecology, and Taxonomy Studies、Ecology and Vegetation Dynamics Studies

Air pollution can cause a decline in species through acidification of the habitat. New data suggest that the decline may be due to eutrophication rather than acidification. In Western Europe, eutrophication largely results from atmospheric ammonium deposition. The amount deposited on vegetation is a function of its canopy structure. Deposition on grasslands has been underestimated, and a significant amount of the deposited ammonium appears to be assimilated by the plant canopy. These quantities are sufficient to initiate changes in the competitive relations among the plant species.