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典型选样调查测定,分析马尾松、大头茶常绿针阔混交林的森林特征、种群结构、林分结构、生物量结构及生态功能。结果表明:1.该混交林是亚热带常绿阔叶林前一阶段的过渡性森林类型,在干扰状态下保持其相对的稳定性。2.复层、异龄现象是该混交林的主要特征。建群种充分利用了林地空间营养面积,发挥了林地的生产潜力。叶面积指数达6.86～8.83,林分木材蓄积量达160～222m~3/ha,林分总生物量达114～163t/ha。其中,乔木层生物量达105～154t/ha。光照充足的林下,草本层生物量可达2.5t/ha,对庇护地表起到了最直接、最明显的作用,而调节林冠密度,可控制或促进草本层生物量的增长。3.此种混交林改善了森林立地的蓄水功能和贮水方式。林地土壤最大贮水量达2645～4100t/ha,降水贮存量达565～1256t/ha,林地枯枝落叶层饱和持水量达4589～8702kg/ha。该类型达到了生态与经济效益兼顾,可在我国南方亚热带山地各类工程造林中推广应用。
A typical sample survey was conducted to analyze the forest characteristics, population structure, stand structure, biomass structure and ecological function of Masson pine and Betula platyphylla mixed coniferous and broad-leaved forest. The results show that: 1. The mixed forest is a transitional forest type in the former stage of subtropical evergreen broad-leaved forest and maintains its relative stability under disturbance. 2 stratification, different age is the main characteristics of the mixed forest. Building species take full advantage of woodland spatial nutrient area, played a forestland production potential. Leaf area index of 6.86 ~ 8.83, stand volume of timber reached 160 ~ 222m ~ 3 / ha, total biomass of 114 ~ 163t / ha. Among them, the arbor layer biomass of 105 ~ 154t / ha. Under sufficient light, the biomass of the herb layer reached 2.5t / ha, which played the most direct and obvious role in sheltered surface, while the canopy density was adjusted to control or promote the growth of the biomass of the herb layer. 3. This mixed forest improves the water storage function and storage method of the forest site. The maximum water storage capacity of forest soil was 2645 ~ 4100t / ha, precipitation storage reached 565 ~ 1256t / ha, the litter layer of woodland saturated water holding capacity of 4589 ~ 8702kg / ha. This type achieves both ecological and economic benefits and can be popularized and applied in all kinds of afforestation projects in the subtropical mountainous areas of southern China.