灵石山不同海拔米槠林优势种叶片δ^(13)C值与叶属性因子的相关性  

Correlation between foliar δ^(13)C and foliar trait factors of dominant species in Castanopsis carlessii forests in Lingshishan National Forest Park

作　　者：王英姿 

机构地区：[1]福州市林业局,福州350005

出　　处：《生态学报》2013年第10期3129-3137,共9页Acta Ecologica Sinica

基　　金：国家自然科学基金项目(30671664)

摘　　要：对灵石山海拔157—842 m(分9个海拔梯度,分别记为A1—A9)的米槠林优势种叶片δ13C值的特征及其与属性因子的关系进行分析,结果表明,灵石山米槠林优势种叶片δ13C的分布范围为(-28.806‰—-34.399‰),平均值为(-30.885±1.205)‰,叶片δ13C值与比叶面积(SLA)、叶片N含量、2年生K含量、Na含量、Mg含量、Ash(灰分)含量呈显著负相关,与2年生叶片Chl(叶绿素)含量、叶片P含量、叶片Ca含量、叶片干物质含量(LDMC)含量呈显著正相关,与不同叶龄Fe、Zn含量相关性不显著,与1年生和2年生叶片Mn含量分别呈负相关和正相关。不同优势种植物叶片δ13C丰度差异可以反映植物生理状况的变化。不同海拔梯度上叶片属性特征在一定程度上反映和影响了以米槠为建群种和优势种的灵石山常绿阔叶林叶片δ13C的特征。Foliar δ13C is an important parameter for researching the adaptive strategy of plants to environment. It was analyzed that the foliar δ13C value and it＇s correlation with foliar trait factors of dominant species in Castanopsis carlessii forests in Lingshishan National Forest Park. Taking the growing situation of Castanopsis carlessii forests and environmental conditions together,nine elevation gradients were divided, which were remarked as A1 to A9 respectively. The dominant species were C. carlessii, Machilus minkweiensi, Schefflera octohylla, Schima superba, Eurya. hebeclados Ling, Enitida Korthals , Castanopsis fabri , Rhododendron simisii Planc , Psychotria rubra , Ardisia quinquegona , Pithecellobium. clypearia , Radix Syzyg buxifolium, Cyclobalanopsis glauca, Rapanea neriifolia, Lindera aggregata, Camellia oleifera, Lithocarpus glabra, Blastus cochinchinensis, Sarcosperma laurinum, Lindera megaphylla, llex elmrriUiana, Tricalysia dubia, Camellia octopetala. Results showed that the range of foliar δ13C value was between -28. 806‰ and -34. 399‰ with average of （-30. 885±1. 205）‰. And foliar δ13C was negatively correlated with SLA, content of N, K, Na, Mg, Ash and positively correlated with chlorophyll content of one-year-old leaf, content of Ca, leaf dry matter. There was no significant correlation between foliar δ13C and content of Fe and Zn. The foliar δ13C was negatively correlated with Mn content of one-year-old leaf, and positively with content of two-year-old leaf. Different δ13C in different dominant species reflects change of physiological status in plant. The characteristics of foliar traits of different elevation gradients reflected and affected foliar δ13C propertiesof broad-leaved evergreen forests in Lingshishan.

关 键 词：优势种 稳定性碳同位素 叶属性因子 叶龄 米槠林 灵石山 

分 类 号：S792.99[农业科学—林木遗传育种]