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KMID : 0380119800030000001
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Korean Journal of Ecology
1980 Volume.3 No. 0 p.1 ~ p.10
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Chemical and ecological studies of grasslands and soils of the Young-dong in Seoul, Korea
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Abstract
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This study was carried out to find out the correlation between plant groups and environmental gradient in the native grassfild near Kang Nam Express Terminal from August 26 to september 15, 1977.
The correlations among plant species were calculated by using the method of x^2 and the various relationships among soil environmental gradients were grouped by means of correlation coefficient.
As a result, both the species and the soil environmental factors could be subdivided into four groups, and the four groups of the native grassfield were turned out to be correlated with the four groups of soil environmental factors.
The first plant group(Panicum dichotomiflorum, Chenopodium album, Bidens forndosa, Humulus japonicus, Echinochloa macrovotbi, Rorippa sublyrata, Polygonum longisetum, Rumex japonicus, Alopeculus amurensis, Potentilla fragarioides, Centipeda minima, Beckmannia erucaeformis) was formed in the releve｀ 1∼10 reagions, organic matter by Turin´s metohd, Total N, Exchange Ca and total of Exchange K, Na, Mg, Ca were abundent.
The second plant group(Digitaria sanguinalis, Paltulaca oteracea, Echinochlea macrocrovi, Cyperus amuricus) was formed in the relve｀ 11∼18 reagions, where Exchange Ca and total of Exchange K, Ng, Mg, Ca were little but Exchange Al and sand were aburdent.
In relv｀ 19∼20 reagions, with much of Exchange Ca, total of Exchange K, Na, Mg, Ca, pH and a little Exchange Al, was found the third plant group(Pycreus sanguinoloentus, Cyperus amuricus, Ludwigia prostrata, Echinochloa echinata, Polygonum thunbergii, Salix glandulosa seedling) The fourth plant group(Cassia nomame, Polygnoum perfoliatum, Setaria viridis, Glocien ussuriensis, Lactuca indica, setaria glauca, Artemisia capill aris, Artmisia asiatica, Calamagrostis arundinacea, Kummerowia striata, Denotheraodorata, Artemisia japonica, Carey laceolata) was formed in relve｀ 21∼25 reagions, where organic matter by loss on ignition, Exchange Mg and Maximum water holding capacity were abundent but sand was a little.
Thus it can be concluded that there is a close relationship between the vegetation groupd classified by meaus of x^2 and the environtal factors of soil devided by means of correlations coefficient.
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KEYWORD
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