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 209
... Podzol ranker ( Alpine humus soil ) A2 Leached sandy gravel B1 Iron staining 17 2 consisting of raw humus directly overlying the parent material . mid - slopes above the forest edge . On higher slopes , a thin podzol ranker develops ...
... Podzol ranker ( Alpine humus soil ) A2 Leached sandy gravel B1 Iron staining 17 2 consisting of raw humus directly overlying the parent material . mid - slopes above the forest edge . On higher slopes , a thin podzol ranker develops ...
Page 213
... podzol . This gives rise to the soil type known as a gley podzol . If drainage near or at the surface is impeded , then peaty gleyed podzols may result . We previously saw that oakwoods were widely associated with brown earths , adding ...
... podzol . This gives rise to the soil type known as a gley podzol . If drainage near or at the surface is impeded , then peaty gleyed podzols may result . We previously saw that oakwoods were widely associated with brown earths , adding ...
Page 233
... podzolic soils ( podzolic brown earths ) With Bs below an Ap or 15 cm , and no continuous albic E , thin ironpan , distinct Bhs with coated grains or gleyed horizon at 40 cm or less 6.2 Humic cryptopodzols ( Humic podzolic rankers ) ...
... podzolic soils ( podzolic brown earths ) With Bs below an Ap or 15 cm , and no continuous albic E , thin ironpan , distinct Bhs with coated grains or gleyed horizon at 40 cm or less 6.2 Humic cryptopodzols ( Humic podzolic rankers ) ...
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