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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, 吴家森2
1.天台县林业特产局 浙江天台;2.浙江农林大学 环境与资源学院 浙江临安
摘要:
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。结果表明: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之间,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。综合表明毛竹林枯落物持水能力最强,而黑松林林下土壤持水能力最强。
关键词:  天台  枯落物  土壤  持水特性
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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);天台县生态公益林效益评价及空间布局与生态需求耦合水平研究(ZC2017ZFCG-031)
Hydrological Effects of Litter and Forests Soil of Different Forest Types in Tiantai County of Zhejiang Province
Abstract:
The undergrowth litter and soil water-holding capacity of 8 forest types (moso bamboo forest, broad-leaved mixed forest, mixed broadleaf-conifer forest, Coniferous mixed forest, masson pine forest, Chinese fir forest, Pinus thunbergii forest and Schima superba forest) in Tiantai County are studied with field investigation and indoor soaking method. The results are as follows: the litter volume of the 8 different forest types is 8.05~23.84t/hm2; the maximum capacity range is 14.59~35.15t/hm2, (Schima superba forest > mixed broadleaf-conifer forest > broad-leaved mixed forest > masson pine forest > Chinese fir forest> Pinus thunbergii forest> moso bamboo forest> Coniferous mixed forest). Besides, their litter has the basically similar change law of water-holding capacity with the soaking time; water-holding capacity and soaking time present a logarithmic function relation, while the water absorption rate and the soaking time present power function relation. Various types of forest soil bulk density is 0.83~1.21g/cm3; soil water-holding capacity range is 200.74~575.70t/hm2 (Pinus thunbergii forest>mixed broadleaf-conifer forest>Schima superba forest >Chinese fir forest >moso bamboo forest>masson pine forest>broad-leaved mixed forest>Coniferous mixed forest). On the basis of above results, moso bamboo forest litter has the strongest water-holding capacity, and Pinus thunbergii forest soil has the strongest water-holding capacity.
Key words:  Tiantai  litter  soil  water-holding capacity