Atlas of Relations between Climatic Parameters and Distributions of ImportantTrees and Shrubs in North America: Additional Conifers, Hardwoods, and Monocots

摘要

This volume, along with the two preceding volumes of this U.S. Geological SurveyProfessional Paper (1650-A and 1650-B), explores the continental-scale relations between climate and the geographic ranges of woody plant species in North America. To accomplish this, we constructed a 25-km equal-area grid of modern climatic and bioclimatic parameters for North America from instrumental weather records. The geographic distributions of selected tree and shrub species were digitized, and the presence or absence of each species was determined for each cell on the 25-km grid, thus providing a basis for comparing climatic data and species' distributions. The relations between climate and plant distributions are explored in graphical and tabular form.