Fire suppression caused a surfeit of natural fuels in our forests, cumulating in the increasingly severe, uncontrollable fires of recent years: the fires in Yellowstone, the Oakland Hills fires, Los Alamos, and the summers of 2000 and 2001. Carle explores 100 years of controversy over prescribed burning--using fire as a tool--and fire suppression, using the voices of early advocates and today's proponents to examine the strategy of controlled burning.
Compares the Pacific forest, home of the sequoias, to the more biologically diverse tropical rain forests and examines the geology, the climate, and the biological systems at work in one of North America's greatest treasures.
A hundred years later , it had grown into a tall Douglas - fir tree . Of course , it wasn't called a Douglas - fir back then . David Douglas , the botanist and explorer who gave the tree its name , wouldn't be born for another two ...
A two-sided full-color 17' x 22' poster that enrichs each unit's content is included. 'This thematic unit presents two habitats that are often found close together -- forest and meadow -- and the animals found in each.
The noted artist presents oil paintings depicting the forest at different times of the day during the fall and winter and discusses the plants and animals that live there.
Assessment of Forest Values Within the Western Queensland Hardwood Region
人類全体が化石資源による物質文明を謳歌し、それこそが繁栄の証だと思い込んだ時代は終わった。それに替わる人間的豊かさと自然環境の豊かさを確保するには、何から始めた ...
Discusses characteristics of various plants and animals which enable them to survive in the forest.
Vegetation and Environment of the Coastal Western Hemlock Zone in Strathcona Provincial Park, British Columbia, Canada
Eastern chipmunks store vast quantities of the nuts deep in underground burrows ; gray and fox squirrels bury them singly , usually near the source . Red squirrels bury large and small caches of the nuts or store them in burrows , brush ...
Ecologically Based Site Index Curves and Tables for Major Alberta Tree Species