Basic Biogeography |
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Page 213
... horizon still contains some iron content and is often brown or yellow in colour . Very similar soils have been described by Ball . He has drawn attention to a group of freely drained soils , transitional in their morphology and ...
... horizon still contains some iron content and is often brown or yellow in colour . Very similar soils have been described by Ball . He has drawn attention to a group of freely drained soils , transitional in their morphology and ...
Page 227
... horizon present ( an altered subsoil horizon similar to a spodic horizon but altered to a far lesser extent ) Arid region soils , often with salt horizons of calcium , gypsum or sodium A , horizon thick and dark ; best development under ...
... horizon present ( an altered subsoil horizon similar to a spodic horizon but altered to a far lesser extent ) Arid region soils , often with salt horizons of calcium , gypsum or sodium A , horizon thick and dark ; best development under ...
Page 233
... horizon showing vertic features and no E , non- calcareous Bg or paleo - argillic horizon 5. Brown soils Soils , excluding pelosols , with weathered , argillic or paleo - argillic B and no diagnostic gleyed horizon at 40 cm or less 6 ...
... horizon showing vertic features and no E , non- calcareous Bg or paleo - argillic horizon 5. Brown soils Soils , excluding pelosols , with weathered , argillic or paleo - argillic B and no diagnostic gleyed horizon at 40 cm or less 6 ...
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 biotic birch Britain British Isles brown earths Cairngorm Cairngorm Mountains Calluna changes chemical clay climatic climax community climax vegetation complex conservation 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 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 stage structure surface Table temperature timber-line tree-line upland usually variations vegetation whilst wood woodland zone