Author: Pacific Southwest Forest and Range Experiment Station (Berkeley, Calif.)Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 596
Book Description
USDA Forest Service Research Paper PSW.
Author: Pacific Southwest Forest and Range Experiment Station (Berkeley, Calif.)Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 596
Book Description
USDA Forest Service Research Paper PSW.
Author: Weather and Tree Growth Associated with White Fir Mortality Caused by Fir Engraver and Roundheaded Fir Borer
Author: Craig D. WhitesellPublisher:
ISBN:
Category : Abies concolor
Languages : en
Pages : 182
Book Description
Ohia forest decline-its severity and rate of spread-was studied by aerial photographic techniques on a 197,000-acre (80,000-ha) portion of the island of Hawaii. In 1954, only 300 acres (121 ha) showed signs of severe decline; by 1972, the acreage of severely affected forest had increased to 85,200 acres (34,480 ha). Rate of decline and current severity were related to mean annual precipitation and to elevation. The epidemic is continuing. Some forests on other Hawaiian islands also display decline symptoms.
Forest Management and Redwood National Park
Author: United States. Congress. House. Committee on Government Operations. Conservation, Energy, and Natural Resources SubcommitteePublisher:
ISBN:
Category : Forest management
Languages : en
Pages : 780
Book Description
USDA Forest Service General Technical Report PSW.
Author: Pacific Southwest Forest and Range Experiment Station (Berkeley, Calif.)Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 596
Book Description
Growth and Mortality After Regeneration Cuttings in Old-growth Redwood
Author: Kenneth N. BoePublisher:
ISBN:
Category : Coast redwood
Languages : en
Pages : 13
Book Description
To convert old-growth redwood (Sequoia sempervirens) to younger managed stands, three types of regeneration cuttings are being tried at the Redwood Experimental Forest, northern California: clearcutting, shelterwood, and selection cutting. Logging mortality was heavy for all tree sizes and greatest where the heaviest cuts were made. The large size of a negative net growth of sawtimber on selection cuttings is attributed to mortality during a 10-year postlogging period. Net growth was slightly negative on shelterwood cuttings. By the end of the 10 years, basal area growth for saplings on all cuttings was significant. Because of well-stocked reproduction, growth is expected to accelerate - especially on clearcuttings and to a lesser extent on shelterwood cuttings.
Monthly Catalog of United States Government Publications
Author: Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 1388
Book Description
Monthly Catalog of United States Government Publications, Cumulative Index
Author: United States. Superintendent of DocumentsPublisher:
ISBN:
Category : United States
Languages : en
Pages : 1408
Book Description
Catalogue of Publications Issued by the Government of the United States
Author: United States. Superintendent of DocumentsPublisher:
ISBN:
Category : Government publications
Languages : en
Pages : 1402
Book Description
February issue includes Appendix entitled Directory of United States Government periodicals and subscription publications; September issue includes List of depository libraries; June and December issues include semiannual index
Silvics of North America: Conifers
Author: Russell M. BurnsPublisher:
ISBN:
Category : Conifers
Languages : en
Pages : 696
Book Description