山西农业大学学报（自然科学版）2016，Vol.36Issue(11)：815-820,826,7.
管涔林区两种绣线菊幼苗对不同光环境的形态响应
Morphological characteristics of the Spiraea pubescens and Spiraea trilobata seedlings growing under two forest light environments in GuanCen Mountains
摘要
Abstract
Objective]Forest light environment is an important factor affecting forest tree growth and complete the nor-mal renewal process.In order to explore the illumination change influence on Spiraea pubescens and Spiraea trilobata seedlings,we selected two kinds of forest light environments,open and understory.[Methods]Determination of Spiraea pubescens and Spiraea trilobata seedlings height,diameter ratio,specific leaf area,leaf area ratio,biomass and bio-mass allocation,light adaptability of Spiraea pubescens and Spiraea trilobata seedlings in the physiological and ecologi-cal characteristics,for spiraea’s forest renewal,maintenance and provide the basis for recovery.[Results]The results show that:The root,stem,leaf biomass and total biomass of the two kinds of spiraeain in different forest light envi-ronment showed the same rule.Two species of spiraea in forest environment significantly increased the proportion of a-bove ground biomass.When pubescens seeds in open area,their root biomass is significantly increase in leaf biomass ratio index instead.From the plant height,ground diameter,the ratio of height to diameter,canopy shade environment obviously and the Siraea pubescens and Spiraea trilobata size decrease,and significantly improve the Spiraea pu-bescens ratio of height to diameter.From the characteristics of two kinds of leaf area,leaf biomass of spiraea forest was significant.The response of the leaf area was the same to two kinds of spiraea in understory,and their leaf area were significantly increased.In the shading environment,the survival rate of the Spiraea pubescens is slightly higher than the survival rate of Spiraea trilobata .The survival rate of Spiraea trilobata was significantly higher than Spiraea pu-bescens in shading environment.The two kinds spiraea are not traditional hi light plants,spiraea trilobata in different forest light environment has a strong ability to adapt,Spiraea pubescens with strong shade tolerance.[Conclusion]In the future afforestation plan,pubescens seedlings could plant under high trees,in the open environment,we could plant more Spiraea trilobata seedlings,so we can achieve the goal of afforestation,and enhancing the effect of vegeta-tion on soil and water conservation.关键词
土庄绣线菊/三裂绣线菊/森林光环境/形态/生物量/生物量分配Key words
Spiraea pubescens/Spiraea triblobata/Forest light environmental/Morphological response/Biomass/Bio-mass allocation分类
农业科技引用本文复制引用
任达,王暾,郭晋平,张芸香..管涔林区两种绣线菊幼苗对不同光环境的形态响应[J].山西农业大学学报（自然科学版）,2016,36(11):815-820,826,7.基金项目
山西省国际合作项目(2015081001) （2015081001）
山西省攻关项目(20140311014-3) （20140311014-3）
高等学校博士基金(20121403110001) （20121403110001）
