Table 4. Repondent status of expert survey

Classification		Frequency (person)	Ratio(%)
Age group	30s	12	44.4
	40s	14	37.0
	50s	1	18.5
Specialty	Landscape architecture	12	44.4
	Urban planning and design	10	37.0
	Architecture	5	18.5
Carrer	5 years a less	6	22.2
	6~10 years	6	22.2
	11~15 years	8	29.6
	16~20 years	6	22.2
	21 years or more	1	3.7