On the natural vegetation in the areas of the reclaimed foreshore land in FUNABASHI CITY

Abstract

The investigation was performed to search the natural vegetation in the Areas-A-E of reclaimed foreshore land of FUNABASHI CITY, and to study the effective Plants for Sand arrestation in these areas.
The results obtained are as follows;
1. About twenty species appeared in the Area-A, after about two years from rectamation was finished, but in this case plants grew under small summed dominance ratio (Table-1, 2 and 6). After about three years from reclamation, the most dominant plant Phragmites communis grew thicker and thicker, and other plants (annual, binnial or perennial plants) hecame to grow well under or near the communities of Phragmites. The number of species increasd to about fifty species in the Area-E (Table-3-5 and 6), but no evergreen-perennials found in these areas.
2. After three or four years from reclamation was finished, Phragmites communis, Artemisia vulgaris, Digitaria adscendens, Eleusine indica etc. were dominant in the slightly higher land, and Phragmites communis, Chenopodium glaucum, Panicum crus-galli var. praticola etc. were dominant in the slightly lower land.
3. Every annual or binnial plants were uneffectve for sand arrestation in winter, but perennial plants such as Artemisia vulgaris, Imperata cylindrica etc. were somewhat effective, and Phragmites communis were the most effective for sanderosion (Table-7, 8 and 9).
4. From the present investigation it will be the most important problem to find suitable perennial plants (especially. erer-greens), and to find moreover suitable methods of artificial plantation, which can arrest the blown sand quickly.