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| 云雾山草地优势种的光合生理特性对光强的响应 | |
| 引用本文： | 胡相明,王希英,程积民,万惠娥,赵艳云.云雾山草地优势种的光合生理特性对光强的响应[J].水土保持通报,2008,28(4):33-37. |
| 作者姓名： | 胡相明 王希英 程积民 万惠娥 赵艳云 |
| 作者单位： | 1. 滨州学院,城市与环境系,山东省黄河三角洲生态环境重点实验室,山东,滨州,256603 2. 滨州市人民医院,山东,滨州,256600 3. 中国科学院水利部,水土保持研究所,陕西,杨凌,712100 |
| 基金项目： | 国家重点基础研究发展计划973项目(2007CB106803); 国家科技支撑课题(2006BAD09B08); 国家自然科学基金重点项目(30230290); 国家林业局荒漠化检测专项; 滨州学院青年人才创新工程 |
| 摘 要： | 研究了云雾山自然保护区主要优势种的光合生理特性对模拟光强的响应。研究结果表明，随光照强度的增加，4种植物的光合速率先增大后减少，蒸腾速率增加。本氏针茅的水分利用效率先增大后减少，铁打蒿、大针茅和厚穗冰草的WUE呈一直增大趋势。4种植物的光合速率和水分利用效率在生长旰季7月份最大．生长末季9月份最小；蒸腾速率则表现为8月份最大。不同植物间最大光合速率的顺序为铁杆蒿〉大针茅〉厚穗冰草〉本氏针茅；蒸腾速率大小顺序为本氏针茅〉厚穗冰草〉大针茅〉铁杆蒿：水分利用效率的顺序为铁杆蒿〉厚穗冰草〉大针茅〉本氏针茅。叶绿素荧光参数表明，随光强的增加，光能捕获效率（Fv′Fm′）、宴际光化学效率（Phi PSⅡ）和PhiCO2降低，热耗散（NPQ）上升。 |
| 关 键 词： | 云雾山草地 光合特性 光强 CO2浓度 |
| 收稿时间： | 2007/12/19 0:00:00 |
| 修稿时间： | 2008/2/29 0:00:00 |
Response of Photosynthesis Physiological Characteristics of Predominant Species to Simulated Photosynthetic Radiation Intensity in Yunwu Mountain Grassland |
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| HU Xiang-ming,WANG Xi-ying,CHENG Ji-min,WAN Hui-e and ZHAO Yan-yun.Response of Photosynthesis Physiological Characteristics of Predominant Species to Simulated Photosynthetic Radiation Intensity in Yunwu Mountain Grassland[J].Bulletin of Soil and Water Conservation,2008,28(4):33-37. | |
| Authors: | HU Xiang-ming WANG Xi-ying CHENG Ji-min WAN Hui-e and ZHAO Yan-yun |
| Institution: | Department of Urban and Environmentand Key Laboratory for Eco-environment Sciences of Yellow River Delta of Shandong ProvinceBinzhou UniversityBinzhouShandong 256603China;General Hospital of Binzhou CityBinzhouShandong 256600China;Institute of Soil and Water ConservationChinese Academy of Sciences and Ministry of Water ResourcesYanglingShaanxi 712100China;Institute of Soil and Water ConservationChinese Academy of Sciences and Ministry of Water ResourcesYanglingShaanxi 712100China;Department of Urban and Environmentand Key Laboratory for Eco-environment Sciences of Yellow River Delta of Shandong ProvinceBinzhou UniversityBinzhouShandong 256603China |
| Abstract: | Response of the eco-physiological characteristics to simulated photosynthetic radiation intensity in Stipa bungeana,Artemisia sacrorum,Stipa grandis,Aneurolepidium dasystachys leaves was investigated.Results showed that with increasing irradiation,Photosynthetic rate(Pn) was increased in lower density irradiation,but was reduced in higher density irradiation.transpiration rate(Tr) rate was enhanced with increasing irradiation.WUE for Stipa bungeana rose with increasing irradiation at first and then declined... |
| Keywords: | Yunwu Mountain eco-physiological characteristics radiation intensity CO2 intensity |
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