Basic Biogeography |
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Page 60
... relative density , relative dominance ( determined by measuring the basal area of the species , i.e. the ground area ... relatively simple . Vegetation stands are plotted with the continuum index as the x - axis and an environmental ...
... relative density , relative dominance ( determined by measuring the basal area of the species , i.e. the ground area ... relatively simple . Vegetation stands are plotted with the continuum index as the x - axis and an environmental ...
Page 212
... relatively low rainfall , an easily leached coarse textured parent material will frequently develop a good podzol profile . Good examples are found in Norfolk on the sandy surface materials of the Breckland . A typical forest podzol ...
... relatively low rainfall , an easily leached coarse textured parent material will frequently develop a good podzol profile . Good examples are found in Norfolk on the sandy surface materials of the Breckland . A typical forest podzol ...
Page 234
... relatively pervious Cg horizon affected by free groundwater 8. Ground - water gley soils With distinct , humose or peaty topsoil and diagnostic gleyed horizon at less than 40 cm , in recent alluvium ripened to more than 20 cm , and / or ...
... relatively pervious Cg horizon affected by free groundwater 8. Ground - water gley soils With distinct , humose or peaty topsoil and diagnostic gleyed horizon at less than 40 cm , in recent alluvium ripened to more than 20 cm , and / or ...
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