rainfall duration
1.Based on 26 year self recording rainfall observation data from Fleissner Weather Station in Austria, by way of the analytical method of rainstorm frequency, the rainstorm amount with rainfall duration from 5 min to 24 h and recurrence period from 0.5 year to 100 year were calculated, the relationship between designed rainstorm amount and rainfall duration or recurrence period was also established in Graden Watershed.
2.Chinese fir, enclosing and tending forest, Costarica henryi, orchard and control (bare land) in Jianou, Fujian by establishment of runoff plot. We systemically discussed the distribution of precipitation, dynamics of soil erosion in different land-use types, the relation between soil and water losses and some rainfall characteristics, such as rainfall amount, intensity, duration and prophase rainfall.

