长白山针阔混交林紫椴的泌蜜量  

Nectar productivity of Tilia amurensis in a broadleaved-conifer mixed forest in Changbai Mountains,China

作　　者：孙震[1] 刘琪璟[1] 徐振招 徐玮泽 SUN Zhen;LIU Qi-jing;XU Zhen-zhao;XU Wei-ze(State Forestry and Grassland Administration Key Laboratory of Forest Resources and Environmental Management,Bei-jing Forestry University,Beijing 100083,China)

机构地区：[1]北京林业大学森林资源和环境管理国家林业和草原局重点实验室,北京100083

出　　处：《应用生态学报》2020年第8期2500-2506,共7页Chinese Journal of Applied Ecology

基　　金：国家自然科学基金项目(31670436)资助。

摘　　要：紫椴是东北东部地区原始针阔混交林中优势种或共优种之一,是优质的用材树种,更是重要的蜜源植物。本文研究长白山地区紫椴从单株到种群(林分)的泌蜜量,建立单株泌蜜量回归模型,并估计林分尺度泌蜜量,分析紫椴泌蜜量与胸高断面积以及材积或蓄积之间的关系。结果表明:紫椴单花开花时间为6~8 d,泌蜜时间为5 d,平均每朵花总泌蜜量为8.58 mg。花蜜的糖浓度在一天中有变化,中午高于早晨和傍晚,平均糖浓度为37.7%。样地紫椴的平均胸径为40 cm,单株开花量为18万个,泌蜜量为1.56 kg(或纯糖0.588 kg)。每公顷紫椴的泌蜜量为79~147 kg(或0.0686~0.1285 m^3,纯糖29.78~55.42 kg)。林分泌蜜量与总断面积以及蓄积量密切相关,可以利用森林资源调查数据估算紫椴泌蜜量。Tilia amurensis is one of(co-)dominant species in the broadleaved-conifer mixed forest in Northeast China,with high commercial and nectariferous values.We estimated the quantity of nectar secretion from individual trees to population or stand levels based on observation and statistical analysis.An equation for individual-tree nectar secretion was established,which was used to estimate nectar quantity at the stand level.We analyzed the relationships between nectar secretion and basal area or stem volume.The booming time for single flower was in average 6-8 days,with a nectar secretion period of about five days.The quantity for the entire period was estimated at 8.58 mg per flower.Sugar contents in the nectar,average 37.7%,showed diurnal variations,being high in the mid-noon and low in the early morning and late afternoon.The average diameter(DBH)of the species was approximately 40 cm,which was estimated to possess as much as 18×10^4 single flowers and 1.56 kg(or pure sugar 0.588 kg)of nectar.At the stand level,the nectar production potential was 79-147 kg(or 0.0686-0.1285 m^3,pure sugar 29.78-55.42 kg)per hectare.There was a close correlation between nectar quantity and basal area or timber volume at both individual and stand levels,which could be used to estimate the nectar quantity for macro-scale forest area based on inventory data.

关 键 词：花蜜 单株泌蜜量 林分泌蜜量 长白山 

分 类 号：S792.36[农业科学—林木遗传育种]