南宁青秀山雨林大观小气候环境特征研究

Microclimate Environment Characteristics at the Rainforest Garden of Qingxiu Mountain in Nanning

为充分了解南宁青秀山雨林大观小气候特征,以南宁青秀山雨林大观为研究对象,对不同区域、不同时段和不同群落进行负离子浓度、温度和湿度测定,分析小气候环境特征。结果表明:不同区域小气候环境质量为林下>水边>广场;不同时间段为上午>下午>中午;不同群落组成为草本>灌木>乔木>铺装。林下草本小气候环境优于其他群落,生态效益较好;广场铺装、广场乔木、广场灌木和水边铺装小气候环境相对较差。温度和湿度与负离子浓度存在显著的线性相关,且是负离子浓度重要的影响因子。据此提出以下建议:1)在林下设置更多活动和休憩区域;2)安排科普教育等活动时应考虑于小气候环境最佳的上午进行;3)注重植物群落构建,通过提高植物多样性促进小环境生态循环。

In order to fully understand the microclimate characteristics at the Rainforest Grand of Nanning Qingxiu Mountain,we investigate the different locations of the rainforest at different time periods and with different community composition,and measure the negative ion concentration,temperature and humidity,for analyzing the characteristics of microclimate environment.The results show that the microclimate environmental quality is ordered:forest>proximity to water>square for locations,morning>afternoon>noon for time period,and herbaceous plants>shrub>arbor>pavement for community composition.The microclimate environment of the understory herbaceous layer is better than other layers,with better ecological benefits.The microclimate environment of square pavement,arbors in square,shrubs in square and waterside pavement is relatively poor.Temperature and humidity have significant linear correlation with the concentration of negative ions,which are also the important influencing factors to negative ions concentration.Hence,it is suggested that the Rainforest Garden should be improved from the three aspects:1)More spaces for recreation and leisure should be designated under forests;2)Activities such as science popularization should be held in the morning when the microclimate environment is the best;3)More attention should be paid to the reestablishment of plant communities to promote the ecological cycle of micro-environment through the improvement of plant diversity.