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 36
... leached by percolating waters to lower soil levels or flushed out in the regional drainage system . Cation exchange is a very common and very important soil reaction . Plants obtain much of their nutrition from these exchangeable bases ...
... leached by percolating waters to lower soil levels or flushed out in the regional drainage system . Cation exchange is a very common and very important soil reaction . Plants obtain much of their nutrition from these exchangeable bases ...
Page 178
... leached out of the foliage or from the microorganisms living on the canopy leaves . Inorganic nitrogen , however , is regularly removed from this rainwater supply as it passes through the canopy and in some months total nitrogen , both ...
... leached out of the foliage or from the microorganisms living on the canopy leaves . Inorganic nitrogen , however , is regularly removed from this rainwater supply as it passes through the canopy and in some months total nitrogen , both ...
Page 209
... 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 , largely podzol , the typical soil within ...
... 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 , largely podzol , the typical soil within ...
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