太湖常见浮叶植物和沉水植物的光合荧光特性比较

应用生态学报

太湖常见浮叶植物和沉水植物的光合荧光特性比较

宋玉芝¹;蔡炜¹;秦伯强²

¹南京信息工程大学环境科学与工程学院, 南京 210044; ²中国科学院南京地理与湖泊研究所, 南京 210008

收稿日期:2008-06-03 修回日期:1900-01-01 出版日期:2009-03-20 发布日期:2009-03-20

Photosynthetic fluorescence characteristics of floating-leaved and submersed macrophytes commonly found in Taihu Lake.

SONG Yu-zhi¹;CAI Wei¹;QIN Bo-qiang²

¹Nanjing University of Science Information & Technology, Nanjing 210044, China;²Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China

Received:2008-06-03 Revised:1900-01-01 Online:2009-03-20 Published:2009-03-20

摘要/Abstract

摘要： 利用水下饱和脉冲荧光仪(DIVING-PAM)，原位观测太湖常见的水生植物菱、荇菜、苦草、黑藻的最大光化学量子产量(F_v/F_m)及在暗适应和光适应条件下的快速光曲线.结果表明:浮叶植物菱和荇菜光系统Ⅱ的潜在最大光合作用能力高于沉水植物苦草和黑藻,其最大量子产量分别为0.837、0.831、0.684和0.764;菱和荇菜的最大电子传递速率、半饱和光强分别高于沉水植物苦草和黑藻,且在光适应条件下尤为显著.

关键词: 城市化, 土地利用/土地覆盖, 城市扩展, 城市扩展强度, 驱动力

Abstract: Some aquatic macrophytes commonly found in Taihu Lake, including Trapa bispinosa, Nymphyoides peltatum, Vallisneria natans, and Hydrilla verticillata were collected, and their maximal quantum yield of photosystemⅡ(Fv/Fm) as well as the rapid light curves (RLCs) under conditions of light adaptation and dark adaptation were measured in situ by using a submersible and pulse-amplitude modulated fluorometer (Diving-PAM). The results showed that floating-leaved plants T. bispinosa and N. peltatum had higher potential maximum photosynthetic capacity than submerged macrophytes V. natans and H. verticillata. The measured maximal quantum yield of T. bispinosa, N. peltatum, V. natans, and H. verticillata was 0837, 0831, 0684, and 0764, respectively. Both the maximal relative electron transport rate and the half saturation point of light intensity of T. bispinosa and N. peltatum were higher than those of V. natans and H. verticillata, especially under the condition of light adaptation.

Key words: urbanization, land use/land cover, urban expansion, urban expansion intensity, driving force.

宋玉芝¹;蔡炜¹;秦伯强². 太湖常见浮叶植物和沉水植物的光合荧光特性比较[J]. 应用生态学报.

SONG Yu-zhi¹;CAI Wei¹;QIN Bo-qiang² . Photosynthetic fluorescence characteristics of floating-leaved and submersed macrophytes commonly found in Taihu Lake.[J]. Chinese Journal of Applied Ecology.

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