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 227
Found in subhumid to arid climates Weak profile development , no strong illuvial
horizon ( as in a podzol ) but a cambic horizon present ( an altered subsoil
horizon similar to a spodic horizon but altered to a far lesser extent ) Arid region
soils ...
Found in subhumid to arid climates Weak profile development , no strong illuvial
horizon ( as in a podzol ) but a cambic horizon present ( an altered subsoil
horizon similar to a spodic horizon but altered to a far lesser extent ) Arid region
soils ...
Page 233
Pelosols Slowly permeable ( when wet ) , nonalluvial clayey soils with B or BC
horizon showing vertic features and no E , noncalcareous Bg or paleo - argillic
horizon 4.1 Calcareous pelosols Without argillic horizon 4.2 Non - calcareous ...
Pelosols Slowly permeable ( when wet ) , nonalluvial clayey soils with B or BC
horizon showing vertic features and no E , noncalcareous Bg or paleo - argillic
horizon 4.1 Calcareous pelosols Without argillic horizon 4.2 Non - calcareous ...
Page 234
Surface - water gley soils ( Stagnogley sensu lato ) Non - alluvial soils with
distinct , humose or peaty topsoil , non - calcareous Eg and / or Bg or Btg horizon
, and no G or relatively pervious Cg horizon affected by free groundwater 7.1 ...
Surface - water gley soils ( Stagnogley sensu lato ) Non - alluvial soils with
distinct , humose or peaty topsoil , non - calcareous Eg and / or Bg or Btg horizon
, and no G or relatively pervious Cg horizon affected by free groundwater 7.1 ...
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Contents
Introduction | 3 |
Initial approaches to vegetation study | 11 |
Initial approaches to soil study | 28 |
Copyright | |
7 other sections not shown
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Common terms and phrases
acidic activities agricultural animals approach areas associated become birch Britain British brown cause changes chemical Class clay climatic complex cover crop cycle described detailed determine dominant early ecology ecosystem effect energy environment environmental established example exist factors field fire flora forest frequently further gley grass grazing ground growing growth horizon humus important increase influence insect land layer less limit loss material measure methods mountain native natural North nutrients oakwoods occur organic particularly pattern peat period pest pine plant podzol pollen population present problem produce reach recent reference region relatively result seedlings similar slopes soil species spread stage stands structure succession surface Table tree tree-line types unit upland usually variations various vegetation whilst wood woodland zone
Bibliographic information
| Title | Basic Biogeography A Longman Text |
| Author | Nigel Pears |
| Edition | 3, illustrated, reprint |
| Publisher | Longman, 1977 |
| Original from | the University of Michigan |
| Digitized | 22 Aug 2011 |
| ISBN | 0582484014, 9780582484016 |
| Length | 272 pages |
| Export Citation | BiBTeX EndNote RefMan |