| 摘要: |
| 以珠海淇澳岛红树林自然保护区内主要红树林树种为材料,通过低温处理,用电导法测定叶片相对电导率,用Logistic方程拟合曲线,求出拐点温度即低温半致死温度(LT50),作为评价各种红树林树种抗寒能力的参考指标,并对不同红树林叶片的低温半致死温度(LT50)进行比较．结果表明：抗寒性由低到高顺序依次为海桑、木榄、无瓣海桑( 海南)、无瓣海桑(幼)、老鼠簕、水黄皮、杨叶肖槿、无瓣海桑(珠海)、卤蕨、桐花树、银叶树、海漆、黄槿、海芒果、秋茄。 |
| 关键词: 红树林 低温致死温度(LT50)抗寒性 |
| DOI： |
| 分类号:Q14 |
| 基金项目:国家科技支撑课题“沿海滩涂消浪护岸林体系研究与示范”(2009BADB2B04)；广东省科技计划项目(重大专项及重点项目)“广东省沿海红树林生态系统恢复与重建技术研究”(A3050102)；广东省林业科技创新示范工程省级专项资金项目“2008年寒害受损红树林生态系统快速恢复技术研究与示范”(2008KJCX012-03) |
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| A Cold resistance study of main mangrove species in Qi’ao Island Zhuhai |
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Zhu-Hong-Wei,Zhong-Song-Fa and
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Research institute of Tropical Forestry, CAF, Guangzhou,
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| Abstract: |
| Using the different mangrove species In Mangrove Nature Reserve of Qi Ao Island Zhuhai as test materials, through the low-temperature press processing, combining leaves relative electrical conductivity with Logistic equation obtain a turning point,namely semi-lethal temperature (LT50) that taken as a reference index evaluate the ability of mangrove trees cold resistance, meanwhile compare different mangrove leaves lethal temperature (LT50),The results showed that: cold resistance from low to high order is Sonneratia caseolaris,Bruguiera gymnorrhiza, Sonneratia apetala (Hainan), apetala (seedling), Acanthus ilicifolius, Pongamia pinnata, Thespesia populnea, Sonneratia apetala (Zhuhai), Acrostichum aureum, Aegiceras corniculatum, Heritiera littoralis, Excoecariat agallocha, "Hibiscus tiliaceus, Cerbera manghas, Kandelia candel.. |
| Key words: Mangrove,Semi-lethal temperature,Cold resistance |
