摘要: … %) canopy cover. The impacts of human alteration of timber canopy cover on the grizzly bear … of timber-toopening edges; (3) leaving a canopy over 3 m tail with cover greater than 5%; (4…
Richard C. Presby, Robert D. Pfister, Bernard L. Kovalchik, Stephen F. Arno, Forest habitat types of Montana.Gen. Tech. Rep. INT-GTR-34. Ogden, UT: U.S. Department of Agriculture, Forest Service, Intermountain Forest & Range Experiment Station. 174 p.. ,vol. 34, ,(1977)