The system is based on factors that are easily available even in countries with poor facilities, such as bedrock geology, slopegradient and vegetation type.
Slopegradient has many impacts on soil erosion by water and mineral nitrogen loss in an erosion process.
坡度是影响坡面水土流失和土壤养分流失过程的重要因素。
3
Percentage, relative density and importance values of tree species and intolerant tree and shrub species increased while slopegradient from lower to upper.