Assessing Soil Erosion by Agricultural and Forestry Production and Proposing Solutions to Mitigate: A Case Study in Son La Province, Vietnam

Table 4

Soil loss levels and areas in the Son La province.

Soil erosion levels	Soil loss (ton·ha^−1·year^−1)	Total
		(ha)	(%)
Very low	0–1	74,683.30	56.49
Low	1–5	11,270.63	8.52
Moderate	5–10	10,419.30	7.88
High	10–50	1,868.08	1.41
Very high	>50	33,974.10	25.70
Total	132,215.41	100

The value level is classified according to Vietnam TCVN 5299: 2009 Soil Quality—method for determination of soil erosion by rain.