【摘要】 竹林区竹类种质保育需要建立避免人为干扰的竹类自然生态系统,但现有的竹林粗放遍及各处的经营策略则直接威胁到竹类种质栖息地的保护。通过对蜀南竹海人工经营和未经营下楠竹林群落环境与种群结构的对比分析,认为保护区内楠竹林经营强度改变了植物群落结构,导致植物物种多样性的丧失,地表灌木、草本和凋落物的盖度降低,生物量减少;考虑天然楠竹林结构演替,楠竹的人工经营(纯林经营)是维持楠竹林生产力和楠竹林的必然途径。基于现代林业理论,提出了县域楠竹林适度经营与保护的空间分工性、集约化策略,以期获得保护区长期的生态经济社会效益与生态安全屏障的优化格局。更多还原

【Abstract】 The bamboo germplasm conservation in bamboo forest regions requires to establish the natural ecosystem with an shortage of artificial disturbance,but the current management strategies that are widely adopted in the bamboo distribution habitats have directly stressed the habitat conservation of bamboo germplasm.Based on an analysis of the community environment and population structure features of moso bamboo forests which were managed and not managed in the Shunan Bamboo Sea,it was found that the different intensive management degree in the conservation region changed the plant community structure,and led to the loss of plant species diversity,and reduced the surface shrubs,herb and litter coverage,and biomass.Considering the natural bamboo forest structure,artificial management was the necessary way of maintaining the high productivity and moso bamboo forest.According to modern forest theory,this paper proposed the strategy of spatial separation and directional cultivation for moderate utility and conservation of bamboo forest in order to gain the long-term ecological,economic and social benefits and the optimization pattern of ecological safety barrier in the conservation zone.更多还原