Table 2. Result of the 1st round of Delphi technique.

No.	Questionnaire items	Mean^a	SD^a	Mode	Q₁^b	Q₃^b	QD^b
(a)	Inappropriateness of the current land-use type classification	4.21	0.71	5	4.00	5.00	0.50
(b)	Inappropriateness of the current slope gradient classification	4.07	0.92	4	4.00	5.00	0.50
(c)	Insufficiency of the current 17 standard works	4.71	0.47	5	4.25	5.00	0.38
(d)	No-allowing of regional differences according to mountainous and remote areas	1.57	0.51	1	1.00	2.00	0.50

The mean, standard deviation (SD), and mode were derived from 5-point Likert scale responses by experts. If the mean is greater (or smaller) than 3.00, it means to affirm (or deny) for the questionnaire item.
The quartile deviation (QD) was obtained by dividing the difference between the 1st (Q₁) and 3rd (Q₃) quartiles by 2. If the QD is smaller (or greater) than 1.00, it means that it has agreed (or has not agreed) to affirm or deny the questionnaire items.