Germination & Growth of Paper Birch & Yellow Birch in Simulated Strip Cuttings PDF Download
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Author: David A. Marquis
Publisher:
ISBN:
Category : Birch
Languages : en
Pages : 24
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Book Description
"Seed germination and seedling establishment of paper birch (Betula papyrifera Marsh.) and yellow birch (Betula alleghaniensis Britton) are most satisfactory where there is abundant soil moisture and freedom from excessively high soil temperature. In a cutover forest, these conditions occur most frequently in areas shaded from direct sunlight and on scarified seedbeds that contain exposed mineral soil (1.4). Attempts to encourage birch regeneration, then, could logically take two forms: use of cutting methods that provide the optimum degree of shade, and/or seedbed preparation. The study reported here deals with the first possibility.S3.
Author: David A. Marquis
Publisher:
ISBN:
Category : Birch
Languages : en
Pages : 24
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Book Description
"Seed germination and seedling establishment of paper birch (Betula papyrifera Marsh.) and yellow birch (Betula alleghaniensis Britton) are most satisfactory where there is abundant soil moisture and freedom from excessively high soil temperature. In a cutover forest, these conditions occur most frequently in areas shaded from direct sunlight and on scarified seedbeds that contain exposed mineral soil (1.4). Attempts to encourage birch regeneration, then, could logically take two forms: use of cutting methods that provide the optimum degree of shade, and/or seedbed preparation. The study reported here deals with the first possibility.S3.
Author: David A. Marquis
Publisher:
ISBN:
Category : Birch
Languages : en
Pages : 0
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Book Description
Author:
Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 628
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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 134
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Author:
Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 64
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Book Description
Author: James W. Hornbeck
Publisher:
ISBN:
Category : Clearcutting
Languages : en
Pages : 36
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Book Description
S2Two even-age management systems, progressive strip cutting and block clearcutting, have been studied since 1970 on small watersheds at the Hubbard Brook Experimental Forest, New Hampshire. In the strip cutting, all merchantable trees were harvested in a series of three strips over 4 years (1970-74). In the block clearcutting, all trees were harvested in a single operation in 1970. This paper contrasts progressive strip cutting and block clearcutting for the 10-year period after initiation of harvest in terms of hydrologic response, erosion losses, stream water ions, nutrient leaching, nutrient removals in harvested products, and natural regeneration of vegetation.S3.
Author: United States. Superintendent of Documents
Publisher:
ISBN:
Category : United States
Languages : en
Pages : 1348
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Author: United States. Superintendent of Documents
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 1320
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Author:
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 1470
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Author: Miroslaw M. Czapowskyj
Publisher:
ISBN:
Category : Reforestation
Languages : en
Pages : 664
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Book Description
In 1962 a survey-type study was conducted to evaluate the performance of forest tree species in established plantings on strip-mine spoils of the Anthracite Region of Pennsylvania. Plantations representing a wide range of site conditions in all four anthracite fields were examined.
