城市公园不同植物群落的生态功能比较分析

以郑州市绿荫公园为例,通过测量群落中土壤温湿度等环境因子,研究不同时期3种植物群落的生态功能变化.结果表明,群落A的平均土壤温度最低,比群落C低5℃左右;在测定的各个时期,群落B、群落C的空气温度有时超过30℃,变化幅度明显,群落A的空气温度在30℃以下;在空气湿度上,群落A群落B群落C,群落A的CO2浓度与光照强度分别高于群落B和群落C.群落A的乔、灌、草的合理搭配对于降低空气温度,保持较高的空气湿度是非常重要的,同时保证了下层植物具有合适的光照条件,该项研究为城市公园植物群落的设计提供了有益参考.

Comparative Analysis on Ecological Function of Three Kinds of Plant Communities in City Park

Ecological function of three kinds of plant community was studied through the determination of environmental factors such as soil temperature and soil moisture in Lv-yin park of Zhengzhou. The results showed that the average soil temperature of Community A was the lowest in three plant communities which was 5 ℃ lower than that of Community C; The air temperature for Community B and Community C sometimes was higher than 30 ℃ during determination with the obvious magnitude of changes, but below 30 ℃ for Community A; For air humidity, Community A〉Community B 〉Community C, CO2 concentration and photo flux density for Community A were higher than those of Community B and Community C. The reasonable configuration of tree, bush and grass plants in Community A is important for the maintenance of lower air temperature and higher air humidity, as well as the right light conditions for the lower plants, this results provide the beneficial information for the design of plant community in city park.