A study of cyclobalanopsis glauca community feature in gutian mountain nature reserve zone in zhejiang province 浙江古田山自然保护区青冈群落特征研究
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Pn of cyclobalanopsis multinervis and michelia foveolta were decreased obviously at 13 : 00pm , which appeared " midday depression of pn " 多脉青冈和金叶含笑的净光合速率在13时左右出现了明显的降低，发生了光合“午休”现象。
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It was shown that the species compositions became richer and richer from upper mountain slope to low mountain slope and pin us yunnanensis , keteleeria evelyniana , cyclobalanopsis delavayi populations as the dominant population belonged to degenerative growth type , up growth type and stable growth type , respectively 结果表明：从山坡上部到下部，物种的组成越来越丰富，其中的优势种群云南松属于衰退型、滇油杉属于增长型、黄毛青冈属于稳定型。
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Branches and leaves dry weights / roots dry weights is higher in cyclobalanopsis multinervis and michelia foveolta under shading , which revealed that growth of roots were restrained by shading . from june to october , special leaf weights , . chla / chlb and soluble sugar contents were decreased in cyclobalanopsis multinervis and michelia foveolta under shading , but leaf w 在6月至10月的整个生长季节，遮荫处理使多脉青冈和金叶含笑的比叶重下降，叶片含水量上升，叶绿素含量上升， chla / chlb下降，类胡萝卜素含量上升，可溶性蛋白含量上升，可溶性糖含量下降
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But michelia foveolta had obvious growth dominance under one layer shading , the increasing of plant height is relatively high , there were no significant difference in increased perimeter , branches and leaves dry weight , roots dry weights , the whole dry weights of plant in michelia foveolta between full light and shading treatments 而金叶含笑在一层遮荫处理下表现明多脉青冈和金叶含笑幼苗的光合生理特性研究显的生长优势，其株高增量较多，径粗增量和枝叶干重、根干重、整株干重虽然略低于全光照下，但二者并无显著差异
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Comparing with full light treatment ( control ) , tr , gs , wue and light saturation point were significantly decreased , ci was increased by shading . so far as curve of light response , seedlings of 2 tree species represented higher photosynthetic capability under shading treatments in the ranges of low light 和对照的全光照处理相比，遮荫处理显著地降低了多脉青冈和金叶含笑的蒸腾速率、气孔导度、水分利用率和光饱和点，细胞间隙co _ 2浓度在遮荫条件下显著上升。
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The importance values of the renewal layers indicated that the communities to be dominated only by keteleeria evelyniana would evolve on the upper slope , the needle leafed and broad leafed mixed forests to be dominated by cyclobalanopsis delavayi and keteleeria evelyniana would evolve finally on the middle slope and the evergreen broad leafed forests to be dominated only by cyclobalanopsis delavayi would be evolve finally on the lower slope 根据更新层的重要值来判断，山坡上部将演替成为以滇油杉为主的单优群落；山坡中部将演替成为滇油杉和黄毛青冈为主的针叶、阔叶混交林；山坡下部将演替成为以黄毛青冈为主的常绿阔叶林。
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3 . growth and seasonal variation of physiological characteristics of cyclobalanopsis multinervis and michelia foveolta under different shadings . plant height and perimeter of cyclobalanopsis multinervis were decreased in level of extreme significance , which resulted in decreacing branches and leaves dry weights , roots dry weights , the whole dry weighys of plant under shading 3 、不同遮荫处理下多脉青冈和金叶含笑的生长和生理特性的季节变化遮荫处理极显著地降低了多脉青冈的株高和径粗的增长，因此导致了枝叶干重、根干重及整株干重在遮荫处理下的极显著下降。
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So far new variety is deficient and difficult to popularize because it is hard to know the eclolgical adaptability of plants , so we ca n ' t adjust measures to local conditions . in this paper , we systematically studied photosynthetic characteristics , light response characteristics , photosynthetic diurnal variation , growth , biomass , seasonal variation of physiological characteristics and leaf anatomy of cydobalanopsis multinervis and michelia foveolta under different shadings ( full light , one layer shading , two layers shading ) by ecophysiologi cal methods 本研究运用生理生态学的研究方法，选取目前在园林上应用较少的多脉青冈和金叶含笑的幼苗为研究材料，对其在不同遮荫处理下(全光照、一层遮荫、两层遮荫)的光合特性、光响应特性、光合日变化、生长情况、生物量、生理特性的季节变化及叶片形态解剖结构等方面进行了较为全面系统的研究。
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Liihe palynological data indicate a vertical paleovegetational landscape : evergreen broad - leaved forest dominated by castanopsis , lithocarpus , cycobalanopsis and anacardiaceae etc occurred on the slopes near the deposit site ; mixed coniferous / broad - leaved forest and coniferous forest occurred on the area of high elevation , and main elements were tsuga , podocarpus , pinus , picea and abies etc . seven paleoclimatic parameters of liihe area estimated include mat ( 13 . 3 - 20 . 9c ) , wmt ( 22 . 5 - 27 . 5c ) , cmt ( 2 . 5 - 12 . 6c ) , dt ( 12 . 1 - 24 . 8c ) , map ( 803 . 6 - 1254 . 7mm ) , mmap ( 179 . 4 - 281 . 9mm ) and mmip ( 10 . 2 - l8 . 5mm ) . yangyi palynoflora comprises of 52 palynomorphs belonging to 32 families . the percentage of angiosperms is 61 . 5 % , gymnosperms 9 . 6 % , pteridophytes 25 . 0 % , algae 3 . 9 % 吕合孢粉植物群的组成反映该地区在沉积时期植被具有垂直分带特征，沉积地附近分布有常绿阔叶林，包括壳斗科的青冈属、栲属、石栎属和漆树科等植物，以及多种亚热带和温带阔叶成分；林中混生少量针叶树(如松属和杉科等) ；林内蕨类植物较少；距沉积地较远的海拔较高的地区分布由铁杉属、冷杉属、雪松属和云杉属组成的针阔混交林或针叶林。
