Test of the RUSLE and Key Influencing Factors Using GIS and Probability Methods: A Case Study in Nanling National Nature Reserve, South China

Table 4

Categories of soil erosion class and the area and proportion of each category.

Soil loss class	Intensity	Annual mean erosion modulus (t km^−2·yr^−1)	Area (km^2)	Proportion (%)
1	Negligible	(1000)	526.31	90.17
2	Slight	(1000)–2500	39.69	6.80
3	Moderate	2500–5000	16.21	2.78
4	Severe	5000–10,000	1.46	0.25
5	Very severe	10,000–15,000	0.00	0.00
6	Extremely severe	>15,000	0.00	0.00

^aThis number is applied in mountainous areas, while the number in parentheses is applied in other areas [46].