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 36
... important properties by which we describe and classify soils . Soil acidity and base exchange Most soil particles are surrounded by a thin film of water and this is particularly true of minute clay and organic colloidal particles with ...
... important properties by which we describe and classify soils . Soil acidity and base exchange Most soil particles are surrounded by a thin film of water and this is particularly true of minute clay and organic colloidal particles with ...
Page 38
... important for plant nutrition . Increased acidity can directly reduce the availability of some soil nutrients and may influence populations of soil microorganisms which are important for decomposition and release of chemicals . Further ...
... important for plant nutrition . Increased acidity can directly reduce the availability of some soil nutrients and may influence populations of soil microorganisms which are important for decomposition and release of chemicals . Further ...
Page 199
... important in mobilizing cations and the heather monoculture itself may cause more leaching loss than hitherto suspected . There could be additional losses when ash deposits from burnt heather are partly dissolved and washed away by ...
... important in mobilizing cations and the heather monoculture itself may cause more leaching loss than hitherto suspected . There could be additional losses when ash deposits from burnt heather are partly dissolved and washed away by ...
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