鄂中低丘区不同演替阶段森林凋落物和土壤水文特征  

Hydrological Characteristics of Forest Litter and Soil in Different Successional Stages in the Hilly Region of Central Hubei

作　　者：贾秀红[1] 曾毅[1] 周志翔[1] 高大雄[2] 谢经荣 郭国志 

机构地区：[1]华中农业大学园艺林学学院,武汉430070 [2]湖北省太子山林管局,湖北京山431822

出　　处：《水土保持学报》2013年第4期125-129,共5页Journal of Soil and Water Conservation

基　　金：国家“十二五”科技支撑项目“长江流域防护林体系整体优化及调控技术研究”(2011BAD38B04);中央高校基本科研业务费专项“基于森林结构优化的生态公益林适应性经营研究”(2010QC029)

摘　　要：采用空间代替时间的方法,研究鄂中低丘区太子山林场针叶林、针阔混交林和落叶阔叶林3个不同演替阶段(共8类林分)林下凋落物和土壤的水文特性。结果表明:太子山林场3个演替阶段的林下凋落物总量以针阔混交林最大(介于9.76～12.01t/hm2之间),林下凋落物最大持水率以落叶阔叶林最高;针阔混交林与落叶阔叶林林下凋落物对降水的有效拦蓄量较高,但两者差异不显著,其中麻栎混交林的有效拦蓄量最大(16.81t/hm2);各林分类型0-40cm土层滞留贮水量与饱和贮水量排序均为针叶林<针阔混交林<落叶阔叶林,麻栎混交林的饱和贮水量最大(2 145.8t/hm2)。综合分析表明,落叶阔叶林的持水效果最优,该区植被恢复时要注意促进林分向落叶阔叶林的方向演替。The hydrological characteristics of the litter and soil in three different forest successional stages as coniferous forest,coniferous and broad-leaved mixed forest,and deciduous broad-leaved forest(8forest stands)were studied in Taizishan forest farm,central Hubei,by using the method of substituting time with space.The results showed that the coniferous and broad-leaved mixed forest had the biggest total litter amount(9.76～12.01t/hm2),the maximum water holding ratio of the litter in deciduous broad-leaved forest was the highest.The effective retain capacity of litters under coniferous and broad-leaved mixed forests and deciduous broad-leaved forests were greater.And there were no significant differences between them.The effective retain capacity of the litter in Quercus acutissima mixed stand was the biggest,reaching to 16.81 t/hm2.In different successional periods,the order of NCWHC(non-capillary water-holding capacity)and MWHC(maximal water-holding capacity)below the depth of 0-40cm soil layer was as follows:Coniferous forest<coniferous and broad-leaved mixed forest<deciduous broad-leaved forest.Water-holding capacity of soil under Quercus acutissima mixed stand was the highest(2 145.8t/hm2).In conclusion,the deciduous broad-leaved forest was optimal among three forest types in terms of water conservation,suggested that during the restoration of forest vegetation in study area deciduous broad-leaved forests should be improved in the process of the forest succession.

关 键 词：森林演替 凋落物 土壤水文特性 

分 类 号：S715.7[农业科学—林学]