Basic Biogeography |
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Page 30
... layer ; composed of recently deposited organic material . F - fermented layer ; same material as L but having undergone some decomposition . - H – humified layer ; a further stage of F. The original structure of leaves is no longer ...
... layer ; composed of recently deposited organic material . F - fermented layer ; same material as L but having undergone some decomposition . - H – humified layer ; a further stage of F. The original structure of leaves is no longer ...
Page 31
Nigel Pears. Ao Surface vegetation Litter layer Fermented layer LF H Eluvial horizons Illuvial horizons Humified layer A1 Transitional layer ( organo - mineral ) A2 Leached layer Percolating water B1 Iron pan B2 Further deposition layer ...
Nigel Pears. Ao Surface vegetation Litter layer Fermented layer LF H Eluvial horizons Illuvial horizons Humified layer A1 Transitional layer ( organo - mineral ) A2 Leached layer Percolating water B1 Iron pan B2 Further deposition layer ...
Page 212
... layer of raw humus , many plant structures visible . 5-13 cm : ash grey mineral layer . 13-23 cm : grey to medium brown sandy mineral layer with quartz crystals and mica flecks prominent . Some iron staining . 23 cm : parent material of ...
... layer of raw humus , many plant structures visible . 5-13 cm : ash grey mineral layer . 13-23 cm : grey to medium brown sandy mineral layer with quartz crystals and mica flecks prominent . Some iron staining . 23 cm : parent material of ...
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