rainfall amount
1.CALCULATION AND DISTRIBUTIONAL CHARACTERISTICS OF ANNUAL RAINFALL AMOUNT IN MOUNTAINOUS REGIONS OF NORTH CHIAN
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.
3.The gullies are formed by the processes of infiltration-interflow-collapses. (2) In the slope with sand-loess,the major factors of water erosion are the rainfall intensity and rainfall amount of annual first rainfall. (3) In the region,the evolution processes of slope gully system results from alternative actions of sand deposition and water erosion.


