上海社区常见园林植物固碳释氧效应及优化配置对策

通过对上海社区绿地常见27种园林植物进行夏季光合速率测定,比较分析其固碳释氧效应,同时对植物固碳释氧量与形态指标进行相关性分析,找出影响社区绿地植物固碳释氧量的主要因子。结果表明,27种供试树种单位叶面积、单位土地面积及单株植物固碳释氧量各有差异,其中单位叶面积固碳释氧量最大为女贞;单位土地面积固碳释氧量最大为垂柳;单株植物固碳释氧量最大为香樟。27种供试树种单位土地面积日固碳释氧量与叶面积指数、胸径具有极显著的正相关性,与树冠直径、树高没有相关性;单株植物日固碳释氧量与树冠直径、胸径、树高、叶面积指数具有极显著的正相关性。

A Preliminary Study about Common Garden Plants＇; Effect of Carbon Fixation and Oxygen Release in Shanghai＇s Community and Optimal Arrangement

27 species of common plants in Shanghai＇s community were chosen as subjects The summer photosynthetic rate was measured by Ciras-2 portable photosynthesis system, fixed carbon content was determined, the relationship between plants in summer carbon fixation and morphological index was analyzed,in order to find the main elements that affect carbon fixation and oxygen release of plants. The results showed that the amount of carbon fixation and oxygen release in unit leaf area, unit land area and each plant was different. Ligustrum lucidum had the biggest amount of carbon fixation and oxygen release in unit leaf area, Salix babylonica had the biggest amount of carbon fixation and oxygen release in unit land area, and Cinnamomum camphora had the biggest amount of carbon fixation and oxygen release in each plant. There is a significant positive correlation between the amount of Carbon fixation and oxygen release in unit land area and area density, and DBH as well. It was without with canopy diameter and height. There is a significant positive correlation between the amount of carbon fixation and oxygen release in each plant and canopy diameter,DBH, height and area density.