摘要
以成都市沙河植物廊道广泛应用的8种绿化植物为材料,利用LI-6400XT便携式光合测定系统进行了光合生理生态指标的测定,并对其固碳释氧与降温增湿效应进行了量化研究。结果表明:整个生长季节同类植物各季节的单位叶面积固碳释氧和降温增湿能力表现出夏季>秋季>春季。日固碳释氧能力由强到弱为桂花、垂柳、香樟、黄葛树、山杜英、银杏、天竺桂、水杉,年固碳释氧能力由强到弱为垂柳、香樟、黄葛树、银杏、桂花、天竺桂、水杉、山杜英,日降温增湿效果由强到弱为垂柳、山杜英、水杉、天竺桂、黄葛树、香樟、银杏、桂花。据估算,整个沙河植物群落中乔木树种年总固碳量约为5.87×104t,总释氧量约为4.27×104t。根据对主要树种固碳释氧和降温增湿能力的分析表明,在树种配置时,垂柳、桂花、山杜英、香樟为优选乔木树种,而银杏的固碳释氧和降温增湿能力较弱,可作为长寿树种和观赏树种适量引种,不宜大面积绿化。
In this study, LI-6400XT portable photosynthesis test system was employed to observe physiological indicators of 8 widely used species of Sha river＇s plant corridor in Chengdu. Furthermore, the carbon sequestration, oxygen release capacity, cooling and humidification effects were also evaluated. Our results indicated： The capacity of carbon sequestration, oxygen release, cooling and humidification effect per unit of leaf area was in the order of summer 〉 autumn 〉 spring. The order of daily carbon sequestration and oxygen release capability per unit of leaf area from strong to weak was O. fragrans ,S. babylonica , C. camphora , F. virens , E. sylvestris , G. biloba , C. pedunculatum and M. glyptostroboides ; and the order of annual carbon sequestration and oxygen release capability per unit of leaf area from strong to weak was S. babylonica, C. camphora, F. virens, G. biloba, O. fragrans, C. pedunculatum, M. glyptostroboides and E. sylvestris. The capabilities of daily cooling and humidification effect per unit leaf area of the trees peeies from strong to weak was S. babylonica, E. sylvestris, M. glyptostroboides, C. pedunculatum, F. virens, C. camphora, G. biloba and O. fragrans. It was estimated that the total amount of annual carbon sequestration of trees in Sha river was about 5.87 ~10^4 t and the oxygen release was about 4.27~10^4 t. Based on the above analysis of the main tree species, it was suggested that S. babylonica, O. fragrans, E. sylvestris, and C. camphora should be taken as the priority tree species. Due to the weak C sequestration oxygen release and cooling and humidification effect, G. biloba should not be virescenced in a large area, but could be usedas a longevous and ornamental tree species.
出处
《生态学报》
CAS
CSCD
北大核心
2013年第12期3878-3887,共10页
Acta Ecologica Sinica
基金
国家"十一五"科技支撑专题"西南地区城市森林建设技术试验示范"(2006BAD03A1703)
关键词
绿化树种
固碳释氧
降温增湿
greening tree species
carbon sequestration and oxygen release
temperature drop and humidity increase
