| 准噶尔盆地荒漠区短命植物——狭果鹤虱光合与蒸腾特性研究 |
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| 引用本文： | 袁素芬,李薇,唐海萍.准噶尔盆地荒漠区短命植物——狭果鹤虱光合与蒸腾特性研究[J].北京师范大学学报(自然科学版),2009,45(2). |
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| 作者姓名： | 袁素芬 李薇 唐海萍 |
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| 作者单位： | 北京师范大学地表过程与资源生态国家重点实验室,北京师范大学资源学院,100875,北京 |
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| 基金项目： | 国家自然科学基金重点资助项目(40435014) |
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| 摘 要： | 运用LI-6400便携式光合测定系统,对准噶尔盆地荒漠区典型短命植物---狭果鹤虱(Lappulasemiglabra)净光合速率、蒸腾速率和水分利用效率特征以及光强和CO2响应曲线进行了研究,结果表明:狭果鹤虱的净光合速率日变化在生长中后期均是双峰型,而蒸腾速率日变化则是单峰型,属于非蒸腾午休型,生长中期净光合速率为生长后期的2倍;表观量子效率为0.0691,羧化效率为0.0541,与暖温带其他植物相比,狭果鹤虱对低光强和低摩尔分数的CO2有较高的利用率.
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| 关 键 词： | 短命植物 净光合速率 蒸腾速率 准噶尔盆地 |
PHOTOSYNTHESIS AND TRANSPIRATION OF LAPPULA SEMIGLABRA IN THE DZUNGARIA DESERT |
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| YUAN Sufen,LI Wei,TANG Haiping.PHOTOSYNTHESIS AND TRANSPIRATION OF LAPPULA SEMIGLABRA IN THE DZUNGARIA DESERT[J].Journal of Beijing Normal University(Natural Science),2009,45(2). |
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| Authors: | YUAN Sufen LI Wei TANG Haiping |
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| Institution: | State Key Laboratory of Earth Surface Processes and Resource Ecology;College of Resources Science and Technology:Beijing Normal University;100875;Beijing;China |
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| Abstract: | s Desert spring ephemerals as pioneer plants play important roles in community succession,biodiversity maintenance,dune stabilization in desert ecosystems.Net photosynthetic rate,transpiration rate,water use efficiency,and photosynthetic response to photosynthesis-active radiation and CO2 concentration in Lappula semigabra in The Dzungaria Desert were studied with a LI-6400 portable photosynthetic system.Data showed that net photosynthetic rate in Lappula semiglabra had two daily peaks in the middle and lat... |
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| Keywords: | ephemeral net photosynthetic rate transpiration Dzungaria Basin |
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