4. FUTURE PROBLEMS 
The following three problems could be 
pointed out for the future. 
1) It is necessary to increase the amount of 
data immediately. It appears that more than 
5,000 relevé sheets are necessary to obtain 
an ecologically positive proof. This is 
expected to be achieved during this year. 
2) It is necessary to complete the software 
to analyze the data. This includes a program 
to analyze the relationship between 
distribution and various environmental 
conditions such as relief, landform and 
soils, and a program to analyze the linkage 
among species. 
3) It is necessary to develop the Scientific 
Name Data File, which links the scientific 
name and the Japanese name, in order to 
Check the species’ name and to make 
analysis of genus level or family level. 
56 
REFERENCES 
Miyawaki A., Okuda S., and Mochizuki R. 
(Eds.)., 1983. Handbook of Japanese 
Vegetation (Revised Edition). Tokyo: 
Shibundo Co.,Ltd. Publishers. (Japanese), 
pp.372. 
Miyawaki A. and  Fujiwara K., 1988. 
Vegetation Mapping in Japan. In (Kuechler, 
A. W. and Zonneveld, I. S. (Eds.), 
Vegetation Mapping). Dordrecht: Kluwer 
Academic. (Japanese), pp.427-437. 
Planning and Coordination Bureau (National 
Land Agency) and Geographical Survey 
Institute (Ministry of Construction) (Eds.). 
; 1987. Digital National Land Information . 
Ministry of Finance: Printing Bureau, 
pp-130. 
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