The National Geographic Magazine, Volume 190National Geographic Society., 1996 - Geography |
From inside the book
Results 1-3 of 30
Page 122
... forest : spacious , resilient Density and diversity A healthy ponderosa forest is made of widely spaced , fire- resistant trees . With over- protection ( bottom ) , young trees and competing species make a flammable understory so shaded ...
... forest : spacious , resilient Density and diversity A healthy ponderosa forest is made of widely spaced , fire- resistant trees . With over- protection ( bottom ) , young trees and competing species make a flammable understory so shaded ...
Page 123
Boreal forest : Spruce , pine , and fir dominate the north to the subarc- tic tree line . Large , kill- ing fires recur every 25 to 150 years . JOHN D. DAWSON With a roar of flaming gas- oline , forester Jim. How fires burn Frequent ...
Boreal forest : Spruce , pine , and fir dominate the north to the subarc- tic tree line . Large , kill- ing fires recur every 25 to 150 years . JOHN D. DAWSON With a roar of flaming gas- oline , forester Jim. How fires burn Frequent ...
Page 124
... Forest Service , " but fire poses air - quality problems , poses risks , and is costly . Maybe more impor- tant , at a kind of emotional level , fire chal- lenges some of our most deep - seated fears . " N A ROAR OF WIND and blowing ash ...
... Forest Service , " but fire poses air - quality problems , poses risks , and is costly . Maybe more impor- tant , at a kind of emotional level , fire chal- lenges some of our most deep - seated fears . " N A ROAR OF WIND and blowing ash ...
Other editions - View all
Common terms and phrases
adverse events American archaeologists Arizona astemizole Barragán Barzón Barzonistas border burn called Canyon century B.C. cetirizine Chiapas cisapride CLARITIN clinical Coadministration CONTRAINDICATIONS DAVID ALAN HARVEY Dnipro dose drug earth El Barzón fire fish Gaza Gaza City grass Greek HEARTLAND hepatitis Highland horses human Indian Israel Israeli itraconazole ketoconazole killed kurgan land landscape live looked loratadine Mexican Mexico City MEXICO CITY Pushing mg/kg mg/kg/day MICHAEL PARFIT miles million Monterrey Mountains MUSEUM NATIONAL GEOGRAPHIC National Park Navajo NGS CARTOGRAPHIC DIVISION night North Ossetian PACIFIC Eternal Mexico Palestinian patients peso PHOTOGRAPHS pine plasma concentrations PRIIT VESILIND Pushing the Limits rats reported Road to Reality says Scotland Scots Scottish Scythians Sierra Madre spider SPORANOX steppe street tarantula terfenadine things Tijuana tion Today TOMASZ TOMASZEWSKI town Toyota trees truck Ukraine Veracruz West Zapatistas ZYRTEC