The Litter Storage and Water-holding Properties on the Forestland Converted from Tussah forest

Studies on storage and water-holding properties of litter of Tussah forest,closure forests after root-clipping for 9 a,12 a and 21 a were conducted.The results showed that the total storage of litter layer for the tussah forest was 3.69 t/hm2,and closure forests after root-clipping for 9 a was 7.92 t/hm2,12 a was 8.41 t/hm2 and 21 a was 8.74 t/hm2.The maximum water capacity were 6.23t/hm2,14.71 t/hm2,15.81 t/hm2,17.18 t/hm2 respectively.In our experiment,it indicated that the water-holding capacity were the strongest in 1 h.The absorption rates were decreased while dipping in water.Water in there litter layer reached saturation in 8 h.The relationship between absorption rate and immersion time was S=Ktn.The modified interception amount of the four kinds of forests were 4.75 t/hm2,10.87 t/hm2,11.70 t/hm2,12.78 t/hm2 respectively,and they were commensurate with increase of precipitation depth about 0.60 mm,0.69 mm,0.80 mm.