According to filed survey of five different plantations of bamboo-fir mixed forest

bamboo forest

grassland

fir forest and chestnut forest in Ziquejie terrace of Hu'nan Province

the water hold-up

absorption

release of different types of litters were measured through tests of water soaking and releasing experiment.The results of the study indicated that the above five types of plantations was in the order of the water-holding capacity as:420% for bamboo and fir mixed forest

310% for bamboo forest

283% for grassland

252% for fir forest

226% for chestnut forest;The correlation between water holding capacity and the soaking time was logarithmical

so was that between water releasing capacity and the releasing time while the correlations between water absorption capacity and soaking time

water releasing capacity and releasing time were of power function and all above correlation coefficients R2 were bigger than 0.9.