Basic BiogeographyBasic considerations. Introduction. Inital approaches to vegetation study. Inital approaches to soil study. Plant dynamics and the nature of vegetation. Ecosystems. Ecological factors and environmental variations. distubed ecosystems. Selected examples from the British Isles. The vegetation. The soils. The impact of man. |
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Page 127
... forest fires ' , Bot . Rev. , 26 , 483-533 . Baig , M. N. , Tranquillini , W. und Havranek , W. M. , 1974 ... Forest ' , Geogr . Bull . , 8 ( 3 ) , 228-69 . Caborn , J. M. , 1957. ' Shelter - belts and microclimate ' , Forestry Comm ...
... forest fires ' , Bot . Rev. , 26 , 483-533 . Baig , M. N. , Tranquillini , W. und Havranek , W. M. , 1974 ... Forest ' , Geogr . Bull . , 8 ( 3 ) , 228-69 . Caborn , J. M. , 1957. ' Shelter - belts and microclimate ' , Forestry Comm ...
Page 238
... forests These forests formerly extended to altitudes of 620 m or more but today the upper limit seldom exceeds 490 m . Much of the forest is now open ground or forestry plantation . The gross disturbance of these woods began about A.D. ...
... forests These forests formerly extended to altitudes of 620 m or more but today the upper limit seldom exceeds 490 m . Much of the forest is now open ground or forestry plantation . The gross disturbance of these woods began about A.D. ...
Page 239
... Forest of Glenavon was ' eaten up like a sheep pasture ' and in 1794 ' the forest contained many green spots and . . . affords pasture for a thousand head of cattle ' . It is obvious that these animals would have a marked effect on tree ...
... Forest of Glenavon was ' eaten up like a sheep pasture ' and in 1794 ' the forest contained many green spots and . . . affords pasture for a thousand head of cattle ' . It is obvious that these animals would have a marked effect on tree ...
Contents
Introduction | 3 |
Initial approaches to vegetation study | 11 |
Initial approaches to soil study | 28 |
Copyright | |
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acidic agricultural animals approach areas become biogeography birch Britain British Isles brown earths Cairngorm Cairngorm Mountains Calluna changes chemical clay climatic climax community climax vegetation complex coypus crop cycle deciduous deer dominant Ecol ecologists ecosystem energy environment environmental erosion example fire forest Forestry Forestry Commission gley soils grass grazing ground flora growth heather herbivores Highlands horizon humus important increase influence insect land landscape layer leached lichen litter methods mineral moorland moors mountain native natural nutrients oakwoods occur organic parent material pattern peat pedogenic pest pine pinewood Pinus plagioclimax plant communities plant cover podzol pollen population present produce quadrat Quercus recent regeneration region sample Scotland Scots pine Scottish Highlands seedlings shrubs slopes soil types spread stage structure surface Table temperature timber-line tree-line upland usually variations vegetation whilst wood woodland zone