Successional vegetation on abandoned cultivated and pastured land in Tompkins County, New York.

摘要: STOVER, MARIAN E. AND P L. MARKS (Section of Ecology and Systematics, Cornell University, Ithaca, NY 14853). Successional vegetation on abandoned cultivated pastured land in Tompkins County, New York. J. Torrey Bot. Soc. 125:150-164. 1998-To investigate influences use old field successional vegetation, we sampled twenty-one fields with agricultural histories either cultivation or pasturing A TWINSPAN classification showed a major division corresponding to history, apple-dominated pastures clustered together. Analyses ground-layer did not show the same division. Common important woody plants included Acer rubrum, Cornus racemosa, Crataegus spp., Fraxinus americana, Malus Pinus strobus, Prunus serotina, Rhamnus cathartica, Viburnum dentatum. Formerly more frequently contained apple, pear, buckthorn, hawthorn, which were sometimes dominant trees. These taxa infrequent never formerly fields, commonly red maple white pine. Exotic part comprising over one quarter third herbaceous identified. Most exotic early species, however. number forest understory species appeared fields. One site that had been plowed 13 such taxa, apparently persisted through fifty years pasturing.