Studies on the growth of trees and shrubs for landscaping in the sand areas of the reclaimed forshore land

Abstract

Soils of reclaimed forshore land in the KEIYORIGION (TOKYO and CHIBA Prefecture) consist of sand and silt.
In this experiment a seach has been made to find out the suitable plants (trees, shrubs and some herbs) for sand areas.
Twenty two species of plants were grown in a experimental field for two or three years
From the present experimental data (Tadle 5, 6 and Fig 1) these plants have been classified in four groups as follows:
1. These plants grow in the sand area better than in the loam area.(Sand-louing plants)
Tamarix chinensis (GYORYU), Yucca gloriosa (ATUBAKIMIGAYORAN)
2. These plants grow in the sand area as well as in the loam area.(Sand-tolerant plants-No.1 Groupe)
Juniperus chinensis var. Kaizuka (KAIZUKAIBUKI), Podocarpus machrophyllus (INUMAKI), Nerium indicum (KYOCHIKUTO), Pittosporum Tobira (TOBERA), Albizzia julibrissin (NEMUNOKI), Crinum asiaticum var. japonicum (HAMAOMOTO)
3. These plants can grow in the sand area, but grow not so well as in the loam area.(Sand-torerant plants-No.2 Groupe)
Pinus Thunbergii (KUROMATSU), Elaeagus pungens (NAWASHIROGUMI), Euonymus japonica (MASAKI), Ligustrnm iaponicus (NEZUMIMOCHI), Raphiolepis umbellatta var. Mertensii (MARUBASHARINBAI), Ternstroemia japonica (MOKKOKU), Camellia japonica var. hortensis (YABUTSUBAKI), Camellia sasanqua (SAZANKA), Osmanthus fortunei (HIIRAGIMOKUSEI), Osmanthus ilicifoliurn (HIIRAGI), Pasania edulis (MATEBASHII), Quercus phyllyreoides (UBAMEGASHI)
4. These plants cannot grow well in the sand area, but grow well in the loam area.
Forsythia viridissima (SHINARENGYO), Liriope graminifolia variegata (FUIRIYABURAN)