东灵山辽东栎林主要树种叶功能性状差异性研究  

Trait differences research on leaf function of liaodong oak forest main species in Dongling mountain

作　　者：李颖[1] 姚婧[1] 杨松[1] 侯继华[1] 

机构地区：[1]北京林业大学林学院/省部共建森林培育与保护教育部重点实验室,北京100083

出　　处：《广东农业科学》2012年第23期159-162,171,共5页Guangdong Agricultural Sciences

基　　金：国家自然科学基金青年基金(31000263);教育部科学技术重点项目(107014)

摘　　要：为了解北京东灵山辽东栎林主要树种的叶功能性状差异性,分别从种间和种内两个方面,对东灵山辽东栎林先锋树种棘皮桦、优势树种辽东栎和常见树种五角枫的比叶面积(SLA)、叶干物质含量(LDMC)、叶氮含量(LNC)、氮磷比、叶绿素含量与氮的比值等5种叶功能性状进行了差异性研究。结果表明:(1)各树种成树的5种叶功能性状种间差异显著,幼树除氮含量外,其他性状在3个树种间差异显著。(2)对于各叶功能性状的种内差异性,棘皮桦和五角枫的比叶面积、叶绿素与氮的比值差异显著,辽东栎和五角枫的叶干物质含量、氮含量差异显著,辽东栎的氮磷比差异显著,且3个不同树种的叶种内功能性状差异并不具有一致的规律性。The paper studied the inter- and intra-specific differences on five kinds of leaf functional traits among eommon pioneer species Betula davurica, the dominant tree species Quercus liaotungensis Koidz and eommon species Acer mono Maxim of the Quercus liaotungen.sis Koidz forest in the Dongling Mountain, including specific leaf area, leaf dry matter content, leaf nitrogen content, N：P and the ratio of chlorophyll content and nitrogen. The results showed that there were significant inter-specific differences on all the five functional traits of mature tree leaf. In addition to the nitrogen content, leaf functional traits differ a lot among the saplings of three species. As for each leaf functional trait＇s intra-specifie difference, the specific leaf area and the ratio of chlorophyll content and nitrogen both had significant differences in Betula dwuriea and Acer mono Maxim, while leaf dry matter content and nitrogen content differed notably in Quercus licutungensis Koidz and Acer mono Maxim, and N：P in Quercus licutungensis Koidz （P=0.003）. And intra-speeific leaf functional trait differences of the three species were not with consistent regularity.

关 键 词：辽东栎林 叶功能性状 种间差异性 种内差异性 

分 类 号：S718.5[农业科学—林学]