Factors Affecting the Natural Regeneration of Quercus in Scottish Oakwoods. II. Insect Defoliation of Trees and Seedlings

1997 ◽  
Vol 34 (3) ◽  
pp. 585 ◽  
Author(s):  
J. W. Humphrey ◽  
M. D. Swaine
Keyword(s):  
Natural Regeneration ◽  
Factors Affecting ◽  
Insect Defoliation

Environmental and anthropogenic factors affecting natural regeneration of degraded dry Afromontane forest

2021 ◽  
Author(s):  
Hadgu Hishe ◽  
Kidane Giday ◽  
Tobias Fremout ◽  
Aklilu Negussie ◽  
Raf Aerts ◽  
...  
Keyword(s):  
Natural Regeneration ◽  
Anthropogenic Factors ◽  
Factors Affecting ◽  
Afromontane Forest ◽  
Dry Afromontane Forest

scholarly journals Factors Affecting Natural Regeneration of Tropical Forests across a Precipitation Gradient in Myanmar

Forests ◽  
2018 ◽  
Vol 9 (3) ◽  
pp. 143 ◽  
Author(s):  
Inkyin Khaine ◽  
Su Woo ◽  
MyeongJa Kwak ◽  
Seong Lee ◽  
Sun Je ◽  
...  
Keyword(s):  
Tropical Forests ◽  
Natural Regeneration ◽  
Precipitation Gradient ◽  
Factors Affecting

scholarly journals Alternate Strip Clearcutting in Upland Black Spruce: II. Factors Affecting Regeneration in First-cut Strips

1987 ◽  
Vol 63 (6) ◽  
pp. 439-445 ◽  
Author(s):  
John K. Jeglum
Keyword(s):  
Natural Regeneration ◽  
Black Spruce ◽  
Mineral Soil ◽  
Strip Width ◽  
Seedling Density ◽  
Factors Affecting ◽  
Topographic Position ◽  
Factors Influencing ◽  
Main Factors ◽  
Upper Slope

In a two-cut, alternate strip clearcutting system in upland black spruce, the main factors influencing black spruce regeneration in the first-cut strips were strip width, natural seeding period, amount of receptive seedbed and topographic position. In the three study areas, 80-m strips yielded over 60% stocking and over 7 500 seedlings per hectare with a 4-year natural seeding period. Narrower strips 40 m and 20 m wide showed increasing levels of reproduction. Four years of natural seeding gave better natural regeneration than two years. Seedling density and frequency in quadrats were correlated with the amount of receptive seedbed. Regeneration was more abundant on drainageways and lower slopes, and less abundant on upper slope and crest sites. For successful regeneration under similar climatic and physiographic conditions, strip widths should be no more than 80 m, and leave times no less than 3 years. It is essential to scarify the upland mineral soil sites, but scarification of lowland sites is not recommended, especially where there is abundant Sphagnum.

scholarly journals REGENERATION IN MANITOBA

1962 ◽  
Vol 38 (1) ◽  
pp. 74-78
Author(s):  
R. A. Haig
Keyword(s):  
Natural Regeneration ◽  
Black Spruce ◽  
White Spruce ◽  
Jack Pine ◽  
Experimental Conditions ◽  
Artificial Regeneration ◽  
Factors Affecting ◽  
Seed Supply ◽  
Degree Of Control

Surveys have shown that after normal logging operations in Manitoba, the regeneration of white spruce, jack pine and black spruce was not sufficient to provide future well-stocked stands. Other studies, in Manitoba and elsewhere, have determined many of the factors affecting regeneration, and of these the two important ones subject to some degree of control appeared to be seed supply and seedbed conditions. By modifying the seed supply and seedbed conditions excellent regeneration of all three species has been obtained under experimental conditions. The costs involved in these treatments were less than those normally associated with artificial regeneration. It is suggested that the recommended treatments to promote natural regeneration be introduced in current logging operations carried out on an operational scale.

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