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 96
First, we shall consider a major botanical phenomenon, the altitudinal limit of tree
growth (the tree-line), and examine the factors which are thought to determine the
position of this important plant boundary. To quote Odum: 'oftentimes a good ...
First, we shall consider a major botanical phenomenon, the altitudinal limit of tree
growth (the tree-line), and examine the factors which are thought to determine the
position of this important plant boundary. To quote Odum: 'oftentimes a good ...
Page 97
European ecologists use three terms which help to sharpen our focus on the
altitudinal limits of tree growth. The upper limit or tall, erect tree growth occurring
at forest densities is known as the timber-line or waldgrenze. The kampfzone
refers ...
European ecologists use three terms which help to sharpen our focus on the
altitudinal limits of tree growth. The upper limit or tall, erect tree growth occurring
at forest densities is known as the timber-line or waldgrenze. The kampfzone
refers ...
Page 102
But there has always been the problem of deciding whether one climatic variable
acts as the limiting factor or whether a factorcomplex (several interrelated climatic
parameters) operates to limit tree growth. Only recently has refined research ...
But there has always been the problem of deciding whether one climatic variable
acts as the limiting factor or whether a factorcomplex (several interrelated climatic
parameters) operates to limit tree growth. Only recently has refined research ...
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Contents
Introduction | 3 |
Initial approaches to vegetation study | 11 |
Initial approaches to soil study | 28 |
Copyright | |
9 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 ecological ecosystem effect energy environment environmental established example exist factors field fire 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 operate organic particularly pattern peat period pest pine plant podzol 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 |