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Initial approaches to vegetation study
Initial approaches to soil study
9 other sections not shown
acidic activities agricultural animals appear approach areas associated become birch Britain British brown cause changes chemical Class clay climatic complex cover crop cycle described detailed determine dominant early ecological ecology ecosystem effect energy environment environmental established example exist factors field fire flora forest frequently further grass grazing ground growing growth horizon humus important increase influence insect land layer less limit material measure methods mountain native natural nutrients oakwoods occur operate organic particularly pattern peat period pest pine plant podzol population present problem produce reach recent reference region relatively result seedlings shown 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