CAJ | 학술논문

固碳释氧是植物的一项重要生态服务功能。以北京市朝阳区城乡结合部17种常用绿化植物为研究对象，采用美国Li-6400便携式光合测定仪和Li-2000冠层分析仪测定植物的光合速率和叶面积指数，通过聚类分析将其固碳释氧能力分级，并对植物固碳释氧效益进行了系统的定量研究。结果表明，17种常用绿化植物的光合速率曲线多呈单峰或双峰趋势，单位叶面积固碳量为2.92～13.81 g/（m2· d），释氧量为2.12～10.05 g/（m2· d）；单位土地面积固碳量为11.00～92.71 g/（ m2· d），释氧量为8.00～67.42 g/（ m2· d）。单位叶面积固碳释氧能力聚类分析表明，乔木（9种）分为两级，灌木（5种）分为两级，草本植物（3种）分为两级；单位土地面积固碳释氧能力分析表明，乔木（9种）分为两级，灌木（5种）分为三级，草本植物（3种）分为两级。因此，提高城乡结合部林草植被系统的固碳释氧效益，除选择固碳释氧能力较强的植物外，还应综合考虑拟选植物的结构配置。
고탄석양시식물적일항중요생태복무공능。이북경시조양구성향결합부17충상용녹화식물위연구대상，채용미국Li-6400편휴식광합측정의화Li-2000관층분석의측정식물적광합속솔화협면적지수，통과취류분석장기고탄석양능력분급，병대식물고탄석양효익진행료계통적정량연구。결과표명，17충상용녹화식물적광합속솔곡선다정단봉혹쌍봉추세，단위협면적고탄량위2.92～13.81 g/（m2· d），석양량위2.12～10.05 g/（m2· d）；단위토지면적고탄량위11.00～92.71 g/（ m2· d），석양량위8.00～67.42 g/（ m2· d）。단위협면적고탄석양능력취류분석표명，교목（9충）분위량급，관목（5충）분위량급，초본식물（3충）분위량급；단위토지면적고탄석양능력분석표명，교목（9충）분위량급，관목（5충）분위삼급，초본식물（3충）분위량급。인차，제고성향결합부림초식피계통적고탄석양효익，제선택고탄석양능력교강적식물외，환응종합고필의선식물적결구배치。
Carbon fixation and oxygen release ( CFOR ) is an important ecological service of the plants .Li-6400 portable photosynthesis test system and Li-2000 plant canopy test system were employed to observe the physiological velocity and leaf area index of 17 widely used afforestation plants in the rural-urban fringe of Chaoyang District , Beijing .The cluster analysis was adopted to classify their CFOR capacities , and the CFOR benefits evaluated quantitatively .The results indicated that the diurnal change curve of net photosynthesis rates of 17 experimental species has one or two peaks .The daily carbon fixation and oxygen release per unit leaf area was respectively 2 .92-13.81 g/(m2· d) and 2.12-10.05 g/(m2· d).The daily carbon fixation and oxygen release per unit land area was respectively 11.00-92.71 g/( m2· d) and 8.00-67.42 g/( m2· d).According to cluster analysis results , the CFOR capabilities per unit leaf area of 9 arbors are divided into two levels , 5 shrubs divided into two levels , and 3 herbs divided into two levels .The CFOR capabilities per unit land area of 9 arbors are divided into two levels , 5 shrubs divided into three levels , and 3 herbs divided into two levels .Therefore , in order to enhance the CFOR capabilities of the vegetation system in the rural-urban fringe , not only should the plants which have higher capabilities of CFOR be chosen , but also they should be configured properly through composite model .