Atlas of Relations between Climatic Parameters and Distributions of Important211 Trees and Shrubs in North America: Introduction and Conifers

摘要

This atlas explores the continental-scale relations between the geographic ranges211u001eof woody plant species and climate in North America. A 25-km equal-area grid of 211u001emodern climatic and bioclimatic parameters was constructed from instrumental 211u001eweather records. The geographic distributions of selected tree and shrub species 211u001ewere digitized, and the presence of absence of each species was determined for 211u001eeach cell on the 25-km grid, thus providing a basis for comparing climatic data 211u001eand species' distributions. The relations between climate and plant distributions 211u001eare explored in graphical and tabular form. The results of this effort are 211u001eprimarily intended for use in biogeographic, paleo-climatic, and global-change 211u001eresearch.