Basic Biogeography |
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Page 211
... Brown earths are slightly to strongly acid soils with a mull or moder humus : surface pH values of 5-6.5 increase with depth to about neutrality . The profile does not show strong contrasts into distinct mineral horizons with sharp ...
... Brown earths are slightly to strongly acid soils with a mull or moder humus : surface pH values of 5-6.5 increase with depth to about neutrality . The profile does not show strong contrasts into distinct mineral horizons with sharp ...
Page 213
... brown soils and they usually have a moder humus . Mackney and Burnham note that in this case the Ea horizon still contains some iron content and is often brown or yellow in colour . Very similar soils have been described by Ball . He ...
... brown soils and they usually have a moder humus . Mackney and Burnham note that in this case the Ea horizon still contains some iron content and is often brown or yellow in colour . Very similar soils have been described by Ball . He ...
Page 233
... Brown soils Soils , excluding pelosols , with weathered , argillic or paleo - argillic B and no diagnostic gleyed ... Brown calcareous earths Non - alluvial , loamy or clayey without argillic horizon 5.2 Brown calcareous sands Non ...
... Brown soils Soils , excluding pelosols , with weathered , argillic or paleo - argillic B and no diagnostic gleyed ... Brown calcareous earths Non - alluvial , loamy or clayey without argillic horizon 5.2 Brown calcareous sands Non ...
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