12种观赏竹的固碳释氧效应研究

A Study of Carbon Fixation and Oxygen Release Capability of 12 Ornamental Bamboo Species

以园林中常见的12种观赏竹种作为研究对象,对不同竹种在不同月份的净光合速率、固碳释氧效应进行了比较分析。研究结果表明:不同月份各竹种的净光合速率明显不同,月变化趋势为7月>8月>6月>5月>4月;净光合速率值最大的是阔叶箬竹,最小的是唐竹。同一竹种不同月份的固碳释氧量存在显著差异,12种观赏竹不同月份单位叶面积和单位土地面积固碳释氧的变化趋势均为7月>8月>6月>5月>4月;同一月份不同观赏竹的单位叶面积和单位土地面积固碳释氧效应均差异显著,阔叶箬竹的单位叶面积固碳释氧量最高,唐竹最低;青丝黄竹的单位土地面积固碳释氧量最高,黄槽竹最低。聚类分析将12个竹种的固碳释氧能力分为3类,可为竹类植物在园林景观中的应用提供一定的参考。

The net photosynthetic rate（ NPR） and carbon fixation and oxygen release capability（ CFORC） of 12 ornamental bamboo species in different months were compared and analyzed. The results show that the NPR of different bamboo species was significantly different in different month with the change trend of July August June May April; the species with maximum NPR was Indocalamus latifolius, while the species with minimum NPR was Sinobambusa tootsik. The CFORC of the same bamboo species was significantly different in different month,and the CFORC change trend of 12 ornament bamboo species in terms of per unit leaf area and per unit land area was July August June May April; the CFORC of per unit leaf area and per unit land area of different bamboo species were significantly different in the same month,and the species with the maximum CFORC of per unit leaf area was I.latifolius while the minimum was S. tootsik; the species with the maximum CFORC of per unit land area was Bambusa eutuldoides var. viridi-vittata,while the minimum was Phyllostachys aureosulcata. The CFORC of 12 ornamental bamboo species were classified into three types using cluster analysis,which for providing a theoretical basis of bamboo landscaping.