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    • 羊蹄甲属藤本和树木叶片热值与建成成本的比较研究

    Yan Xiao,Ke-Yan Zhang,Shu-Bin Zhang,Jiao-Lin Zhang

    Plant Science Journal（2020）

    Cited 3|Views16
    Abstract
    以羊蹄甲属(Bauhinia)10种木质藤本和10种树木为研究对象,对其叶片的养分、 灰分、 热值与建成成本等9个指标进行测定,并分析了这些性状在两种生长型之间的差异以及性状之间的相互关系.结果显示,20种羊蹄甲属植物的干质量热值均值为18.64 kJ/g,去灰分热值均值为20.20 kJ/g.叶片热值和建成成本与碳含量显著正相关而与灰分含量显著负相关.羊蹄甲属木质藤本的叶片热值与建成成本极显著低于树木.主成分分析结果表明,木质藤本位于热值和构建成本低的一端,而树木则相反.研究结果说明,作为典型热带阳生植物,羊蹄甲属植物在存储和转化太阳能方面存在一定优势.羊蹄甲属木质藤本和树木可能采取不同的资源利用与分配策略,藤本羊蹄甲显著较低的叶片热值和建成成本,以及较低的比叶重反映其资源快速周转的策略;而树木羊蹄甲相比于藤本羊蹄甲则表现为较保守的资源利用策略.
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    【要点】：研究发现在羊蹄甲属植物中，木质藤本的叶片热值和建成成本显著低于树木，并且两种植物在资源利用和分配策略上存在差异。
    

    【方法】：对20种羊蹄甲属植物的叶片进行了9个指标的测定，并分析了这些性状之间的差异和相互关系。
    

    【实验】：使用了羊蹄甲属植物的叶片样本，通过测定其养分、灰分、热值和建成成本等指标来研究两种生长型的差异。研究结果显示，木质藤本的叶片热值和建成成本显著低于树木，反映了它们资源快速周转的策略。