Basic Biogeography |
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Page 169
... acidic igneous rocks . They often have a more open structure with good light penetration reaching the field - layer . Several shrubs may be present : Betula pubescens ( birch ) is often a main shrub but Ilex aquifolium ( holly ) , Alnus ...
... acidic igneous rocks . They often have a more open structure with good light penetration reaching the field - layer . Several shrubs may be present : Betula pubescens ( birch ) is often a main shrub but Ilex aquifolium ( holly ) , Alnus ...
Page 211
... acidic reactions occur throughout the profile . They tend to be sandy or silty in texture with a low clay content . These soils were formerly known as ' brown earths of low base status ' . 3. Ferritic brown earths with acid mull humus ...
... acidic reactions occur throughout the profile . They tend to be sandy or silty in texture with a low clay content . These soils were formerly known as ' brown earths of low base status ' . 3. Ferritic brown earths with acid mull humus ...
Page 212
... acidic rocks with their high quartz content greatly favour podzolization . Even in areas of relatively low rainfall , an easily leached coarse textured parent material will frequently develop a good podzol profile . Good examples are ...
... acidic rocks with their high quartz content greatly favour podzolization . Even in areas of relatively low rainfall , an easily leached coarse textured parent material will frequently develop a good podzol profile . Good examples are ...
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