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结合密云水库流域水源涵养林的整体建设,重点研究了密云水库南岸不同经营技术措施的水源涵养林的防护功能。研究结果表明:油松纯林的林冠截流率最大,刺槐纯林的林冠截流率最小;针阔混交林地的持水量较高,针叶人工纯林地的持水量较低;阔叶林地土壤入渗率高于针阔混交林地;进行过生态抚育的林木生长量最大;大水平条整地的板栗林的保水、保土效果较好,又有较高的经济效益。因此,实施不同经营技术措施的水源涵养林的生态防护功能不同,应根据不同的经营目的、树种、具体的立地条件、林分结构及植被类型选择不同的水源涵养林经营模式。
Combining with the overall construction of water conservation forest in Miyun Reservoir Basin, the protective function of water conservation forest with different management measures on the south bank of Miyun Reservoir is studied emphatically. The results showed that the canopy interception rate was the highest in Pure Pinus tabulaeformis forest and the lowest in the canopy pure forest. The water holding capacity in mixed coniferous and broad-leaved forest was higher, while the water holding capacity in pure coniferous artificial forest land was lower. The rate of tree growth was the highest in ecological nurturing. The chestnut forest with large horizontal bar was better in soil conservation and soil conservation and had higher economic benefits. Therefore, the water conservation forests with different management measures are different in ecological protection function. Different management modes of water conservation forests should be selected according to different business purposes, tree species, specific site conditions, stand structure and vegetation types.