干拓地 植物의 無機營養素 蓄積에 對하여

On the Accumulation of Minerals with the Plant Species in a Reclaimed Land

For reaserching the factors of plants micro-distribution, accumulation of 5 minerals-total-nitrogen, phosphorus, potassium, sodium and calcium-for 19 plant species was investigated in reclaimed land, in western coast of Korea, In the five minerals, sodium contents were quite different among the species. Plant species were divided into 4 groups based on the sodium accumulation and accumulation site in plant tissue: Na accumultion type above-ground part>below-ground part : Triglochin maritimum, Chenopodium virgatum, Atriplex subcordata, Salicornia herbacea, Suaeda japonica, suaeda asparagoides, Limonium tetragonum, Aster tripolium, Artemisia scoparia, Sonchus brachyotus above-ground part<below-ground part : Lotus corniculatus var. japonicus Na non-accumulation type above-ground part>below-ground part : Zoysia sinica, amagrostis epigeiosa bove-ground part<below-ground part : Phragmites communis. Imperat cylindrica var. koenigii, hacelurus latifolius Carex scabrifolia, Juncus haenkei, Aeschynomene indica. Ordination based on the mineral contents and the ratio of above-ground/below-ground showed that the contents of K and Na in plant tissue were the main factors for the discrimination of salt marsh plants in the reclaimed land. Sodium contents of plant species were proportioned with the Na concentrations of soils.