| 油页岩废渣地12种木本植物光合作用的季节变化 |
| |
| 引用本文： | 黄娟,吴彤,孔国辉,陈志东,张进忠.油页岩废渣地12种木本植物光合作用的季节变化[J].植物生态学报,2006,30(4):666-674. |
| |
| 作者姓名： | 黄娟 吴彤 孔国辉 陈志东 张进忠 |
| |
| 作者单位： | ( 1 中国科学院华南植物园，广州 510650);(2 茂名石油化工公司，广东茂名;525011);（3 广西农业科学院，南宁 530007） |
| |
| 基金项目： | 中国石油化工集团公司资助项目;中国石油化工集团公司资助项目;广东省环保科技研究开发基金 |
| |
| 摘 要： | 研究了引种在油页岩工业废渣地12种木本植物冬、夏季光合作用特征，根据此评价引种植物的光合作用效率，测定的主要参数包括净光合速率(Pn)、蒸腾速率(Tr) 和气孔导度(Gs)。结果表明：1) 冬、夏季各项测定指标差异很大，Pn、Tr、Gs均是夏季高于冬季，而且，夏季平均Pn、 Tr和Gs值要比冬季均值分别高60.9%、77.7%和85.7%，但水分利用效率(WUE)却是冬季高于夏季26 .8%～77.2%。2)Pn日变化节律冬、夏季有异， 夏季较多的种出现“双峰型”，而冬季较多出现“单峰型”。但也有例外，樟树(Cinnamomum camphora)冬、夏季均出现“单峰”；油榄仁(Terminalia bellirica)、红胶木(Tristania conferta) 和柚木(Tectona grandis)冬、夏季均出现“双峰”；海南蒲桃(Syzygium cumini) 则冬季为“双峰”，夏季为“单峰”。3)若某一植物种在冬、夏季都表现出有较高的Pn日均值，相对于另一种植物其中有一季有较高的Pn，说明前者更适应当地环境生长。据此，以冬、夏季Pn日均值的平均值高低排序，评价参试植物在当地自然光照条件下的光合作用效率高低，树种的排序为：大叶相思(Acacia auriculiformis)、油榄仁、铁刀木(Cassia siamea)、云南石梓(Gmeli na arborea)、柚木、红胶木、樟树、海南红豆(Ormosia pinnata)、铁冬青(Ilex rotunda)、海南蒲桃、双翼豆(Peltophorum ptetocarpum)和海南翅萍婆(Pterygota alata)。
|
| 关 键 词： | 光合日变化 净光合速率 水分利用效率 气体交换特征 油页岩废渣 |
| 收稿时间： | 2005-09-21 |
| 修稿时间： | 2006-03-05 |
SEASONAL CHANGES OF PHOTOSYNTHETIC CHARACTERISTICS IN 12 TREE SPECIES INTRODUCED ONTO OIL SHALE WASTE |
| |
| HUANG Juan,WU Tong,KONG Guo-Hui,CHEN Zhi-Dong,ZHANG Jin-Zhong.SEASONAL CHANGES OF PHOTOSYNTHETIC CHARACTERISTICS IN 12 TREE SPECIES INTRODUCED ONTO OIL SHALE WASTE[J].Acta Phytoecologica Sinica,2006,30(4):666-674. |
| |
| Authors: | HUANG Juan WU Tong KONG Guo-Hui CHEN Zhi-Dong ZHANG Jin-Zhong |
| |
| Affiliation: | (1 South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China); (2 Maoming Petroleum Chemical Company, Maoming, Guangdong 525011, China);(3 Guangxi Academy of Agricultural Sciences, Nanning 530007, China) |
| |
| Abstract: | Background and Aims Phytoremediation is an important method for restoring bare soil or slag; however, the physiological traits of plants used for revegetation are poorly known, even though such traits are important to successful remediation. This study was carried out on oil shale waste in Maoming City, Guangdong Province to screen for tree species with high photosynthetic potential, appraise the ability of these plants to acclimatize to oil shale waste, and provide valuable information for ecological restoration of similar waste sites. Methods Diurnal variation of photosynthesis was measured for 12 tree species in summer and winter, using portable photosynthetic equipment (LI-6400, LI-COR, Inc., USA). Other parameters such as transpiration, stomatal conductance, relative humidity, etc. were measured simultaneously, and water use efficiency (WUE) was calculated as net photosynthesis divided by transpiration. Key Results There were large seasonal differences in all parameters, with values of net photosynthesis, transpiration, and stomatal conductance higher in summer than winter (60.9%, 77.7% and 85.7%, respectively), but WUE higher in winter than in summer (26.8%-77.2%). Diurnal variation of net photosynthesis also exhibited seasonal differences. Many tree species exhibited a bimodal peak in summer and a unimodal peak in winter; however, Cinnamomum camphora was unimodal in both seasons; Terminalia bellirica, Tristania confertam, and Tectona grandis were bimodal in both seasons; and Syzygium cumini was bimodal in winter and unimodal in summer. Trees with higher mean net photosynthetic rate in both winter and in summer should be more useful for phytoremediation than species with high net photosynthetic rate in only one season. Accordingly, net photosynthetic rate, which synthesizes all parameters examined, should be considered the most important parameter to appraise the ability of plants to acclimatize. Conclusions According to mean net photosynthetic rates in both winter and summer, the sequence of photosynthesis efficiency of the 12 tree species tested was: Acacia auriculiformis, Terminalia bellirica, Cassia siamea, Gmelina arborea, Tectona grandis, Tristania conferta, Cinnamomum camphora, Ormosia pinnata, Ilex rotunda, Syzygium cumini, Peltophorum ptetocarpum and Pterygota alata. |
| |
| Keywords: | Diurnal variation of photosynthesis Net photosynthetic rate Water utilization efficiency Gas exchange Oil shale waste |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《植物生态学报》浏览原始摘要信息 |
|
点击此处可从《植物生态学报》下载免费的PDF全文 |
|
