Abstract:
To investigate the water holding capacities of
Phyllostachys praecox litter, the water holding characteristics of litter (undecomposed layer and decomposed layer) under two main bamboo plantations were studied by indoor soaking method. The results showed that the maximum water holding capacity, maximum moisture rate and maximum water absorption rate of
Neosinocalamus affinis undecomposed layer were 5455.76 g·kg
−1, 701.99% and 9679.98 g·kg
−1, respectively. Those of
Neosinocalamus affinis decomposition layer were 5720.91 g·kg
−1, 715.99% and 11372.6 g·kg
−1, respectively. Those of
Phyllostachys praecox undecomposed layer were 4281.82 g·kg
−1, 510.00% and 7464.16 g·kg
−1, respectively. Those of
Phyllostachys praecox decomposition layer were 6970.35 g·kg
−1, 900.07% and 10980.26 g/kg, respectively. The analysis showed that the maximum water holding capacity, maximum moisture rate and maximum water absorption rate of
Phyllostachys praecox decomposition layer > those of
Neosinocalamus affinis decomposition layer > those of
Neosinocalamus affinis undecomposed layer > those of
Phyllostachys praecox undecomposed layer. It could be concluded that litter decomposition layer whichwas decomposed by soil animals, soil microbe, and other decomposers had stronger water holding capacity and water absorption rate than undecomposed layer. The litter layer under bamboo plantation was an important structure layer for water holding, water conservation, overland flow retardation and preventing soil erosion. After decomposition, the litter of
Phyllostachys praecoxhad better hydrological effect than that of
Neosinocalamus affinis litter.
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