Abstract:

The forest crown interception precipitation, the penetration speed of soil, and the surface runoff of Larix Kaempferi forests in Funiu Mountain in Western Henan Province were measured in this paper.The results showed that the forest crown interception precipitation during the growth period was 185.1 mm and the rate was 24.4 %.It also indicated that the saturation crow n interception was 5 mm.The crown interception increased with increasing of rainfall, but the crown interception rate decreased with it.The penetration speed of soil was about 10 mm·min^-1, the surface runoff coefficient was 11 %~ 20 %, the loss of silt was 7.5 ×10³ ~ 12 ×10³ kg·hm^-2.The penetration speed of soil and the capacity of surface runoff varied with patterns of soil preparation for afforestation.

Key words: Larix Kaempferi forest, Hydrological effect, Forest crown interception capacity, Surface runoff