公園緑地の自然立地に関する研究
武蔵野台地東半部をケース・スタディとして
1971 年 34 巻 3 号 p. 31-41
詳細
1971 年 34 巻 3 号 p. 31-41
1.“The maintenance of landscape” is a consistent idea for the plan, construction and management of open spaces.
The purpose of this study is to investigate atural condition or the total environment of open spaces and to manage the landscape from the point of phytosociological view.
Landscape management for open spaces is to be based on the phytosociological results and the vegetation maps, which serve to show the total environment of the “Standort”.
2. The surveyed region is the eastern part of the Musashino tableland.
Upland area is of diluvium formation, and is overlaid by deep volcanic sediments, so-called volcanic ash. These sediments were brought to be a parent material to produce Brown forest soil. River sediments are found along River Tama and many dissected valleys. Natural forest of the surveyed region is of temperate zone, named Quercus zone.
There are three typical open spaces in this region.
(1) City Parks...Inogashira Park, Zenpukuji Park etc.(which are generally called a dissected valley park.)
(2) Scenic District...amagawa Scenic District
(3) Natural Park...usashino Metropolitan Natural Park.
3. The field survey of vegetation was made on map with scale of 1: 10, 000. The real vegetation map contains 9 vegetation units with the appropriate determination criteria. The mapping of potential natural vegetation of today follows from synthetical considaration of existing vegetation map, remains of natural forest and trees, soil profile, topography, ground water and land use. They are as follows
(1) Quercus myrsinaefolia association
a. Typical subassociation
b. Zelkova serrata subassociation
(2) Alnus japonica-Quercus acutissima community
(3) Phragmites communis community
4. Landscape management studied is as follows: (1) Landscape maintenance could be discussed with investigating and analyzing the “Standort”of open spaces.
(2) Conservation of remaining forest was treated upon, considering main spacies in its community, natural condition, human influence and maintenance of vegetation.
(3) Species of windbreak, allee, headge, ground cover planting, roadside planting and shore protection planting were selected among those in potential natural vegetation of today and its substitution vegetation.
(4) Planting Plan was made, considering both the staying power of plants against transplanting and plant succession.
