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This study was carried out to survey a riparian vegetation around Pyeongchang-gun, an upper stream of Namhanriver by Braun-Blanquet's method from October 1999 to August 2000. Soils were also sampled to make clear the relationship between the riparian vegetation and soil. The flora of vascular plants...

This study was carried out to survey a riparian vegetation around Pyeongchang-gun, an upper stream of Namhanriver by Braun-Blanquet's method from October 1999 to August 2000. Soils were also sampled to make clear the relationship between the riparian vegetation and soil. The flora of vascular plants surveyed in around Pyungchang-gun was a total of 170 species: 20 varieties, 144 species, 128 genus and 46 families. In the study areas, average soil pH, total nitrogen, organic matter, exchangeable Ca, Mg and K were 6.8, 0.006%, 2.48%, 3.12, 0.60, and 0.07 me $100g^{-l}$, respectively. The value of total nitrogen concentration was lower but the values of pH, exchangeable Ca and Mg concentration were higher than average values in forest soil of Hongchun. Salix gracilistyla community had low pH, exchangeable K, and available P and Phragmites japonica community had medium pH and exchangeable B, and low available P. Persicaria thunbergii community had medium pH, and high exchangeable K, and available P and Artemisia feddei community had high pH, exchangeable K, and available P.

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