Evaluating medical convenience in ethnic minority areas of Southwest China via road network vulnerability: a case study for Dehong autonomous prefecture

Table 2 Grading of debris flows

Flow level	Population affected	Corresponding scale	Volume of flow (10³ m³)
A	>1000	Huge	≥ 50
B	100–1000	Large	20–50
C	10–100	Medium	2–20
D	0–10	Small	< 2

ISSN: 1475-9276