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| 水体泥沙对菖蒲和石菖蒲生长发育的影响 | |
| 引用本文： | 李强,朱启红,丁武泉,宋力,曹优明,蒋山泉,王国祥.水体泥沙对菖蒲和石菖蒲生长发育的影响[J].生态学报,2011,31(5):1341-1348. |
| 作者姓名： | 李强 朱启红 丁武泉 宋力 曹优明 蒋山泉 王国祥 |
| 作者单位： | 1. 重庆文理学院化学与环境工程学院,重庆永川,402160;江苏省环境演变及生态建设重点实验室,江苏南京,210097 2. 重庆文理学院化学与环境工程学院,重庆永川,402160 3. 江苏省环境演变及生态建设重点实验室,江苏南京,210097;南京师范大学地理科学学院,江苏南京,210097 |
| 基金项目： | 国家自然科学基金项目(40873057); 重庆市教育委员会科学技术研究项目(KJ081206); 重庆市科委自然科学基金计划资助项目(CSTC,2009BB7255); 江苏省环境演变及生态建设重点实验室开放课题(JSKLEC200801); 重庆文理学院科研重点项目和引进人才启动资金项目资助 |
| 摘 要： | 三峡库区消落带植物恢复不仅面临长期淹水逆境,还面临高水位落差、反季节消落等环境因素的胁迫。菖蒲和石菖蒲是库区常见的两种湿生植物,探讨它们在泥沙水体中的生长发育,有利于为三峡库区消落带植被恢复的物种选择提供科学依据。用粒径小于100μm的泥沙分别配置浊度为30、60和90NTU的浑浊水体,8月将菖蒲(Acorus calamus L.)和石菖蒲(Acorus tatarinowii S.)植株分别种植于上述水体中,翌年4月统计植株的萌发数、叶长、叶宽、叶片数,利用水下饱和脉冲荧光仪(DIVING-PAM)测定叶片的快速光响应曲线。结果表明,各浊度组植株的萌发率与对照组相同,30NTU组石菖蒲和菖蒲的植株数显著多于对照组,且石菖蒲的植株数随水体浊度增加呈增多趋势,而菖蒲的植株数呈相反趋势。石菖蒲和菖蒲30NTU组植株的叶长、叶宽以及总叶片数、总叶长均显著大于对照组;石菖蒲60NTU组和90NTU组植株的叶长、叶宽和总叶长显著小于对照组(P<0.05),而菖蒲60NTU组的叶长、叶宽和叶片数显著大于对照组(P<0.01),90NTU组植株的叶长、叶宽和叶片数与对照组无显著差异(P>0.05),且菖蒲60NTU组和90NTU组植株的总叶片数和总叶长均显著低于对照组(P<0.01)。由快速光响应曲线可知,在较高光强照射下各浊度组植株的光化学荧光淬灭系数(qP)、非光化学淬灭系数(qN)和相对电子传递速率(rETR)均显著降低,但在低光下各浊度组植株的qP、qN和rETR均显著高于对照组,且菖蒲对低光的耐受范围大于石菖蒲。因而,菖蒲和石菖蒲均能长期生长于浅(0.9m)的悬浮泥沙水体中,具有一定的耐淹能力。 |
| 关 键 词： | 泥沙 菖蒲 石菖蒲 生长发育 快速光响应曲线 |
| 收稿时间： | 2010/1/31 0:00:00 |
| 修稿时间： | 2011/1/16 0:00:00 |
Influence of silts on growth and development of Acorus calamus and Acorus tatarinowii in turbid water |
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| LI Qiang,ZHU Qihong,DING Wuquan,SONG Li,CAO Youming,JIANG Shanquan and WANG Guoxiang.Influence of silts on growth and development of Acorus calamus and Acorus tatarinowii in turbid water[J].Acta Ecologica Sinica,2011,31(5):1341-1348. | |
| Authors: | LI Qiang ZHU Qihong DING Wuquan SONG Li CAO Youming JIANG Shanquan and WANG Guoxiang |
| Institution: | College of Chemistry and Environmental Engineering, Chongqing University of Arts and Sciences,Chongqing 402160,China;Jiangsu Key Laboratory of Environmental Change and Ecological Construction, Nanjing 210097, China;College of Chemistry and Environmental Engineering, Chongqing University of Arts and Sciences,Chongqing 402160,China;College of Chemistry and Environmental Engineering, Chongqing University of Arts and Sciences,Chongqing 402160,China;College of Chemistry and Environmental Engineering, Chongqing University of Arts and Sciences,Chongqing 402160,China;College of Chemistry and Environmental Engineering, Chongqing University of Arts and Sciences,Chongqing 402160,China;College of Chemistry and Environmental Engineering, Chongqing University of Arts and Sciences,Chongqing 402160,China;Jiangsu Key Laboratory of Environmental Change and Ecological Construction, Nanjing 210097, China;College of Geographical Science, Nanjing Normal University, Nanjing 210097, China |
| Abstract: | 175m145m175m project is carried out to regulate water level under normal circumstances,which results in periodic fluctuation of water level over 30m in the Three Gorges Reservoir.Different from most reservoirs,water level rose in winter while dropped in summer in the Three Gorges Reservoir.So,besides the case of being submerged for a long time,vegetations in the water-level-fluctuating zone suffered from two problems caused by those two factors described above.Both Acorus calamus L.and and Acorus tatarinowi... |
| Keywords: | silt Acorus calamus Acorus tatarinowii growth and development rapid light responding curve |
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