Life Zones And Crop Zones Of The United States Classic Reprint

Author : Burton Edward Livingston
Publisher : Forgotten Books
ISBN 13 : 9780332128825
Total Pages : 618 pages
Book Rating : 4.1/5 (288 download)

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Download or read book The Distribution of Vegetation in the United States, as Related to Climatic Conditions (Classic Reprint) written by Burton Edward Livingston and published by Forgotten Books. This book was released on 2018-03 with total page 618 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from The Distribution of Vegetation in the United States, as Related to Climatic Conditions Discussion and preliminary interpretations OF the correlation data. 1. Correlations as indicating controlling conditions. II. Comparative climatic features of the nine general vegetational areas. III. Conditions that probably determine the general vegetational areas. 1. Observations from the 2. Discussion of the observations IV. Conditions that probably determine the life-zones of Merriam 1. Observations from the 2. Discussion of the observations V. Conditions that probably determine the distribution of growth-forms and the ecological distribution of individual Species. 1. Growth-forms 2. Species. VI. Correlation of vegetational areas with generalized climatic provinces. 1. Introductory 2. Temperature provinces 3. Moisture provinces 4. Temperature-moisture provinces based on product index 5. Two dimensional climatic provinces conclusion literature references. The differences in plant life which exist between distant or even between nearby localities must have come under the notice of man in the earliest semicivilized stages of his existence. Human depend ence upon the products of the vegetable kingdom has served to maintain throughout all historic time a Vivid realization of the vegetational differences encountered with changes of latitude, alti tude, and proximity to the sea. The later stages of modern civiliza tion have done extremely little to liberate man from his dependence upon plants, although the development of methods for the preserva tion and transportation of food has given him greater freedom of movement into the jungle, the polar regions, the desert, and the modern city. Many of the activities of the last 150 years have been such as to increase our interest in the distribution of plants and in the nature of the plant populations which characterize different regions, different soils, or different topographic situations. Innumerable bands of ex plorers and collectors have penetrated all parts of the world, bringing back materials upon which we have been able to base a knowledge of the flora and the larger aspects of the vegetation of all but the most inaccessible portions of the globe. The extensive introduction of economic and ornamental plants into new regions and even into new continents has awakened an interest in the possibility of still further introductions and in a study of the causes of the success or failure of such as have been made. The increasing value of all the products Of the forest has led to the planting of trees on a large scale within their native regions and to the experimental introduction of trees from dis tant countries, as well as to attempts to improve natural forest stands. The increasing population of the world has augmented the value of its agricultural lands and has given importance to the study of the proper ties of the soil in their relation to plants. The search for new agri cultural regions and for cr0p plants adapted to the conditions in newly settled areas has led to an interest in natural plant growth as an index of the most promising soils or of the most suitable crops to be cultivated. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.