Effects of the coastal forest upon soil-vegetation system in sand dune: Examples at Kaetsu-district in Niigata prefecture [Japan]

arbre arbre pour bois de construction asia asie bosques chemicophysical properties conifere conifers crops cultivos dicotiledoneas dicotyledons dunas dune dunes economic plants environment environnement estructura del suelo forests gimnospermas gymnosperme gymnosperms japan japon leguminosae lithological soil types medio ambiente mixed forests ornamental plants ornamental trees papilionoideae physiographic features pinaceae pinus pinus thunbergii plantas plantas ornamentales plante plante de culture plante ornementale plante pour construction plants protection protection contre le vent robinia robinia pseudoacacia rosales sandy soils site factors soil physicochemical properties soil reclamation plants soil structure soil types sol sableux structural crops structure du sol suelo arenoso textural soil types timber trees tipos texturales de suelos trees type de sol type de sol lithologique type de sol textural vegetation wind protection