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浙江省天台县不同森林类型枯落物及土壤水文特性
邹奕巧1, 孙欧文2, 刘海英3, 蔡人岳1, 林松3, 葛宏立2, 吴家森2
1.天台县林业特产局, 浙江 天台 317200;2.浙江农林大学 环境与资源学院, 浙江 临安 311300;3.浙江省公益林和国有林场管理总站, 浙江 杭州 310020
摘要:
[目的] 掌握浙江省天台县不同森林枯落物和土壤的持水能力,为该区域今后在森林水源涵养等方面提供科学依据。[方法] 采用野外调查和室内浸泡法,对天台县8种森林类型(毛竹林、阔叶混交林、针阔混交林、针叶混交林、马尾松林、杉木林、黑松林、木荷林)枯落物及林下土壤持水性进行了研究。[结果] 8种森林类型的枯落物蓄积量在8.05~23.84 t/hm2之间;最大持水量变化范围为14.59~35.15 t/hm2,其大小排序为:木荷林 > 针阔混交林 > 阔叶混交林 > 马尾松林 > 杉木林 > 黑松林 > 毛竹林 > 针叶混交林;8种森林类型林下枯落物持水量与浸泡时间之间变化规律基本一致,持水量与浸泡时间呈对数函数关系,不同森林类型林下枯落物吸水速率与浸泡时间呈幂函数关系;各森林类型土壤容重介于0.83~1.21 g/cm3,土壤持水力变化范围为200.74~575.70 t/hm2,其大小依次为:黑松林 > 针阔混交林 > 木荷林 > 杉木林 > 毛竹林 > 马尾松林 > 阔叶混交林 > 针叶混交林。[结论] 阔叶林以及含有阔叶树种的森林类型枯落物以及林下土壤持水能力均较强,其中土壤持水能力最强的为黑松林。
关键词:  浙江省天台县  枯落物  森林土壤  持水特性
DOI:10.13961/j.cnki.stbctb.2020.03.024
分类号:S715
基金项目:国家科技支撑计划团队任务“低效公益林更新改造和健康维持技术研究与示范”(2012BAD22B0503);浙江省水利厅科技项目“浙江省红壤区水土流失关键环境指标监测研究”(RB1916)
Hydrological Characteristics of Litters and Soils of Different Forest Types in Tiantai County of Zhejiang Province
Zou Yiqiao1, Sun Ouwen2, Liu Haiying3, Cai Renyue1, Lin Song3, Ge Hongli2, Wu Jiasen2
1.Tiantai Forestry Bureau of Special Products, Tiantai, Zhejiang 317200, China;2.School of Environmental&Resource Sciences, Zhejiang Agricultural&Forestry University, Lin'an, Zhejiang 311300, China;3.Zhejiang Ecological Service Forest and State Forest Farm Management Terminus, Hangzhou, Zhejiang 310020, China
Abstract:
[Objective] The water-holding capacity of litter and soil in Tiantai County, Zhejiang Province were investigate to provide a scientific basis for forest water conservation in the region.[Methods] The undergrowth litters and water-holding capacity of soil of eight forest types (Phyllostachys edulis forest, broad-leaved mixed forest, mixed broadleaf-conifer forest, coniferous mixed forest, Pinus massoniana forest, Cunninghamia lanceolata forest, Pinus thunbergii forest, and Schima superba forest) in Tiantai County were studied through field investigation and indoor soaking method.[Results] The litter volumes of the eight forest types were 8.05~23.84 t/hm2. The maximum capacity range was 14.59~35.15 t/hm2 (S. superba forest > mixed broadleaf-conifer forest > broad-leaved mixed forest > P. massoniana forest > C. lanceolata forest > P. thunbergii forest > P. edulis forest > coniferous mixed forest). Moreover, the litters had basically similar change laws of the water-holding capacity with soaking time. The water-holding capacity and soaking time showed a logarithmic function relation, whereas the water absorption rate and the soaking time had a power function relation. The soil bulk densities in the different types of forest were 0.83~1.21 g/cm3. The range of water-holding capacity of soil was 200.74~575.70 t/hm2 (P. thunbergii forest > mixed broadleaf-conifer forest > S. superba forest > C. lanceolata forest > P. edulis forest > P. massoniana forest > broad-leaved mixed forest > coniferous mixed forest).[Conclusion] The broad-leaved forest and the forest-type litter with broad-leaved tree species, as well as the soil under the forest, had strong water-holding capacity, and the maximum water-holding capacity of soil was that of the P. thunbergii forest.
Key words:  Tiantai County of Zhejiang Province  litters  forest soil  water-holding capacity