Abstract:In order to study the water holding capacity of the litter of Pinus massoniana plantation in different forest types in the Three Gorges Reservoir Area, the methods of field survey and soaking extraction was applied to study the water holding capacity of P. massoniana plantation (Ⅰ), P. massoniana + Toona sinensis mixed forest (Ⅱ), P. massoniana + Sassafras tzumu mixed forest (Ⅲ), P. massoniana + Rhus chinensis mixed forest (Ⅳ), P. massoniana + Quercus aliena + Sassafras tzumu mixed forest (Ⅴ), P. massoniana + Betula luminifera mixed forest (Ⅵ), P. massoniana + Litsea pungens mixed forest (Ⅶ). The result showed the litter amount in different types of P. massoniana forest in the Three Gorges Reservoir Area ranged from 5.39 t/hm2 to 11.77 t/hm2, the litter thickness ranged from 2.14 cm to 3.73 cm, and the order of total litter amount was Ⅲ > Ⅳ > Ⅵ > Ⅱ > Ⅴ > Ⅰ > Ⅶ, the maximum water holding quantity ranged from 11.94 t/hm2 to 23.42 t/hm2, the maximum water holding rate ranged from 198.53% to 266.17%. The effective interception of the seven types of P. massoniana forest litter ranged from 8.34 to 15.90 t/hm2, and the effective interception rate ranged from 135.79% to 195.81%, the effective interception of litter and the maximum water holding quantity, all showed Ⅲ > Ⅴ > Ⅳ > Ⅰ > Ⅱ > Ⅵ > Ⅶ. However, except for Type Ⅶ and Type Ⅱ, the effective interception rate was consistent with the maximum water holding rate of other types. The water holding capacity of seven types of P. massoniana plantation increased logarithmically with the soaking time. After soaking for 5 minutes, the water absorption rate of litter in different forest types was the highest, and it showed slow decline after soaking for 1 hour. The water absorption rate V and socking time t fit better with power function, and the water absorption rate decreased with the prolongation of the soaking time in power function form.