淮北市5种绿化树种光合特性的研究

Study on the Characteristic of Photosynthesis for Five Green Tree Species

测定了淮北市5种常见的绿化树种:大叶黄杨(Euonymus japonicus)、广玉兰(Magnolia grandiflora)、女贞(Ligu-strum lucidum)、桂花(Osmanthus fragrans)及棕榈(Trachycarpus fortunei)在2007年7月份和11月份的净光合率以及光合能力和氧气释放量。结果表明这5种树木的光合速率在7月份和11月都有明显的日变化,呈双峰曲线。光合能力7月份:大叶黄杨>桂花>女贞>广玉兰>棕榈,11月份:大叶黄杨>女贞>桂花>棕榈>广玉兰;氧气的释放量7月份:桂花>大叶黄杨>广玉兰>棕榈>女贞,11月份:大叶黄杨>女贞>棕榈>桂花>广玉兰。

The five kinds of common trees in Huaibei City： Euonymus japonicus （Euonymus japonicus）, Guang Yu-lan （Magnolia grandiflora）, privet （Ligustrum lucidum） ,osmanthus （Osmanthus fragrans） and palm （Trachycarpus fortunei）, whose net photosynthetic rates,the photosynthetic capacity and oxygen emissions in July and November of were determined. The results showed that these five kinds of trees in the photosynthetic rate in July and November changed obviously,showed a double curve. Photosynthetic capacity in July ： Euonymus japonicus〉Osmanthus fragrans〉 Ligustrum lucidum〉 Magnolia grandiflora〉Trachycarpus fortunei,in November：Euonymus japonicus〉Ligustrum lucidum〉Osmanthus fragrans〉Trachy carpus fortunei〉Magnolia grandiflora;oxygen release in July：Osmanthus fragrans〉 Euonymus japonicus〉Magnolia grandiflora〉Trachycarpus fortunei〉 privet,in November： guonymus japonicus〉 Ligustrum lucidum〉Trachycarpus fortunei〉 Osmanthus fragrans〉 Magnolia grandiflora.