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| 呼伦贝尔草原三种优势植物叶绿素荧光特性的比较 | |
| 引用本文： | 朱琳,潘国富,杜广明,冯朝阳,宋敏超,刁兆岩.呼伦贝尔草原三种优势植物叶绿素荧光特性的比较[J].中国草地学报,2012,34(4):82-86. |
| 作者姓名： | 朱琳 潘国富 杜广明 冯朝阳 宋敏超 刁兆岩 |
| 作者单位： | 1. 黑龙江八一农垦大学动物科技学院,黑龙江大庆,163319 2. 内蒙古兴安职业技术学院,内蒙古乌兰浩特,137400 3. 国家环境保护区域生态过程与功能评估重点实验室/中国环境科学研究院,北京,100012 4. 北京林业大学省部共建森林培育与保护教育部重点实验室,北京,100083 |
| 基金项目： | 国家环境保护公益性行业科研专项，国家环境保护公益性行业科研专项 |
| 摘 要： | 利用MONITORING—PAM荧光仪对呼伦贝尔典型草原三种优势植物羊草、草地麻花头和茵陈蒿的叶绿素荧光特征进行比较,结果表明:三种优势植物的叶绿素荧光参数光适应下最大荧光产量(Fm′)、实际光化学效率(ΦPSⅡ)、表观光合电子传递速率(ETR)的日变化趋势基本一致,但存在明显的种间差异,其日均值为茵陈蒿>草地麻花头>羊草。茵陈蒿的Fm′和ETR的变化幅度明显大于羊草和草地麻花头,而ΦPSⅡ变化幅度又明显小于后二者。茵陈蒿ETR值呈双峰型变化,在12∶00和14∶00出现两次峰值,分别为257.5μmol/m2.s和230.8μmol/m2.s,与羊草和草地麻花头的单峰型变化趋势有区别。三种优势植物中,茵陈蒿具有更强的光能捕获能力和光抑制自我保护机制,草地麻花头次之,最后是羊草。 |
| 关 键 词： | 呼伦贝尔草原 叶绿素荧光 电子传递速率 日变化 |
Comparison of Chlorophyll Fluorescence Characters of Three Dominant Plants in Hulunbeier Typical Steppe |
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| ZHU Lin , PAN Guo-fu , DU Guang-ming , FENG Chao-yang , SONG Min-chao , DIAO Zhao-yan.Comparison of Chlorophyll Fluorescence Characters of Three Dominant Plants in Hulunbeier Typical Steppe[J].Chinese Journal of Grassland,2012,34(4):82-86. | |
| Authors: | ZHU Lin PAN Guo-fu DU Guang-ming FENG Chao-yang SONG Min-chao DIAO Zhao-yan |
| Institution: | 1.College of Animal Science and Technology,Heilongjiang Bayi Agricultural University,Daqing 163319,China;2.Xingan Vocational and Technical College,Ulanhot 137400,China; 3.Key Laboratory of Ecological Environment and Protection of Ministry of Environmental Protection, Chinese Research Academy of Environmental Sciences,Beijing 100012,China; 4.The Key Laboratory of Silviculture and Conservation of Ministry of Education,Beijing Forestry University,Beijing 100083,China) |
| Abstract: | The chlorophyll fluorescence characters of Leymus chinensis,Serratula centauroides and Artemisia capillaris were detected by using MONITORING—PAM multi-channel chlorophyll fluorometer in Hulunbeier typical steppe.The results showed that the diurnal change trends of Fm′,ΦPSⅡ and ETR of three dominant plants were basically the same,but there were significant differences among species,the daily mean values of Fm′,ΦPSⅡ and ETR in three plants were in descending order: Artemisia capillaris> Serratula centauroides>Leymus chinensis.The variation scope of Fm′ and ETR in Artemisia capillaris was larger than that of Leymus chinensis and Serratula centauroides;nevertheless,the variation scope of ΦPSⅡ in Artemisia capillaris was smaller than that of Leymus chinensis and Serratula centauroides.The value of ETR in Artemisia capillaris changed in terms of double-peaks,which was different from that of the others;two single peaks at 12∶00 and 14∶00 were observed in Artemisia capillaris,the values were 257.5μmol/m2·s and 230.8μmol/m2·s,respectively.Artemisia capillaris had the strong ability of trapping light and had better self-protection mechanism of photoinhibition,Serratula centauroides was the second,Leymus chinensis was the last. |
| Keywords: | Hulunbeier typical steppe Chlorophyll fluorescence Electron transport rate Diurnal variations |
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