Title: A Comparison on Water-holding Capacity of Forest Litter and Soil of Mixed Forests of Pinus massoniana and Schima superba in Different Proportions
Abstract: To analyse the function of water conservation of forest litter and soil of mixed forests in different mixing proportions of Pinus massoniana and schima superba,4 types-typeⅠ( ten Pinus massoniana),type Ⅱ( eight Pinus massoniana and two Schima superba),type Ⅲ( seven Pinus massoniana and three Schima superba) and type Ⅳ( six Pinus massoniana and four Schima superba),which were divided according to the proportions of tree species,were selected to set the typical sample plots to compare and analyse the water-holding capacity of the litter and soil. The results were as follows:( 1) The existing litter amount,maximum water-holding rate,maximum water-holding capacity and effective water-holding capacity of the type Ⅳ were the largest,respectively up to 4. 58 t / hm2,230. 44%,10. 56 t/hm2 and 7. 40 t / hm2,significantly higher than those of the other types( P0. 05). The effective water-holding rates of litter were in the order of type Ⅳ type Ⅲ typeⅡ typeⅠ,except for type Ⅳ and type Ⅲ,there were significant differences in effective water-hold rate among other types( P 0. 05).( 2) The maximum soil water-holding capacity,capillary water holding capacity and non-capillary water holding capacity of soil were in the order of type Ⅳ type Ⅲ typeⅡ typeⅠ. There were no significant differences in the maximum water-holding capacity and capillary water holding capacity among each type( P0. 05). There were significant differences the non-capillary water holding capacity among each type( P0. 05),except for type I and type Ⅱ. Comprehensive analysis showed that the water-holding capacity of forest litter and soil in mixed forests was stronger than in pure forests,and increased with the proportion of Schima superba in Pinus massoniana forest,type Ⅳ was the best; replanting broadleaf species in Pinus massoniana forest could effectively improve the function of water conservation of forest.
Publication Year: 2015
Publication Date: 2015-01-01
Language: en
Type: article
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