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 110
... pinewood typical of the upper slopes of the Eastern Highlands in the past would have functioned as a very efficient wind barrier . This is because a medium - density barrier of this type is more effective than a solid windbreak which ...
... pinewood typical of the upper slopes of the Eastern Highlands in the past would have functioned as a very efficient wind barrier . This is because a medium - density barrier of this type is more effective than a solid windbreak which ...
Page 182
... pinewood has been replaced by birchwood which , in time , has then reverted back to pinewood . Birch may also dominate open sites within or above pinewoods , such as steep scree slopes or around former settlements such as bothies and ...
... pinewood has been replaced by birchwood which , in time , has then reverted back to pinewood . Birch may also dominate open sites within or above pinewoods , such as steep scree slopes or around former settlements such as bothies and ...
Page 183
... pinewood . Both have many species in common but the relative abundance and growth - forms differ in each type . In the moderately dense , native pinewood there is usually a slight admixture of birch ( Betula pubescens ) and a few rowan ...
... pinewood . Both have many species in common but the relative abundance and growth - forms differ in each type . In the moderately dense , native pinewood there is usually a slight admixture of birch ( Betula pubescens ) and a few rowan ...
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