Comparative Study On The Different Plant Functional Groups Leaf Traits At The Maoershan Region

Plant traits link environmental factors,individuals and ecosystem structure and functions as plants respond and adapt to the environment.Plant leaves characters is the most sensitive to changes in the environment of plant traits,it measures the growth of plants and plant use of resources and the ability to work closely with plants able to respond to environmental changes by the formation of the survival of countermeasures.According to the shape of leaves key to the main plant functional group.The same functional group on a similar response to environmental factors in the ecosystem,biological or similar groups play a role in the District, the area of global change also play an important role.Specific leaf area(SLA) is fundamental leaf trait reflecting the plant adaptation to environments,as well as the ability to utilize resources.This study measured a great deal data of SLA,carbon content,chlorophyll content and SPAD from 16dominant species,19 shrub and 106 herbs at the Maoershan region,Reflecting the physiological characteristics of plant leaves key traits(leaf area,leaf weight,specific leaf area,and chlorophyll concentration of carbon content),of the Maoershan region,the main function of forest plants spectrum,and analysis of micro-habitats of the same species traits of leaves.The results suggested that:The relation of different plant functional groups leaf traits; The diversity arose from different site condition,canopy height and leaf age on one species leaf traits;The relations of leaf traits parameter in the same plant functional types and the different plant functional types.And the main conclusions were as follows:(1)Broad-leaved species of tree is divided into functional groups and conifer species functional group two subclasses.The broad-leaved species are divided into three subfunctional group:aspen(Populus davidiana),poplar(Populus ussuriensis),elm(Ulmus davidiana),osier(Salix pierotii) and robur(Quercus mongolica) white oak(Salix pierotii) for the first sub-functional group;cortexphellodendri(Phellodendron amurense) Sophora japonica(Albizia kalkora),white birch(Betula platyphylla),purple lime(Tilia amurensis), maple(Acer mono) and walnut(Juglans mandshurica) is the second-functional group;Ash independence for the third-functional group.Shrubs fall into two main functional groups: baomadingxiang(Syringareticulata),warm wood slivers(Viburnum burejaeticum), Ciwujia(Radix Acanthopanacis),Qiliu(Salix purpurea),Lonicera(Lonicera japonica.), Euonymus(Euonymus maackii),rhamnose(Rhamamus davurica),hazelnut(Corylus mandshurica),Tonosho Spiraea(Spiraea pubescens),Chek failed(Rose acicularia),Melaleuca Paper(Deutzia glabata),three-pin Ching(Berberis amurensis) and maple(Acer trgentosum) as the first sub-functional group;Qianjinyu(Carpinus cordata),Choulizi(Prunus padus),the Gouzaomihoutao(Actinidia kolomikta),silk Spiraea(Spiraea chamaedryfolia),white maple(Acer mandshurica) and willow pattern Spiraea(Spiraea salicifolia) for the secondfunctional group.The function of this group for further study of plant physiological ecology and global climate change research to provide the basic data and climate-vegetation interaction model to provide functional vegetation provide the basis for division.(2)leaf shape between different degrees of relevance.Various functional groups of species between leaf area and dry weight are closely related.Trees and the SPAD leaf area than the significant negative correlation,and the carbon content than the leaf area and SPAD significant negative correlation.Conifer chlorophyll A and B chlorophyll significant positive correlation between chlorophyll A/B and the carbon content of chlorophyll weak positive correlation. SPAD and shrubs leaf area than the significant negative correlation,with the carbon content of a significant negative correlation.The SPAD herbs than leaf area and still significant negative correlation,and the carbon content and SPAD significant positive correlation.Therefore,all functional groups within the SPAD and leaf area than the significant negative correlation,but broad-leaved species carbon content and SPAD negative correlation,and the carbon content of herbs and SPAD are related.This shows that the leaves of plants of different character to the environment ability to respond and adapt to different,different type of plant growth between the ecological measures are often different.It also shows that the study of the environmental response and adaptation,the ratio of the area and SPAD is often more sensitive indicators. (3)slope of the significant impact of the birch leaf area,than the leaf area and SPAD,the Korean pine significant impact on the chlorophyll content.Canopy highly significant effect than leaf area and SPAD,also chlorophyll A,and the total carbon content of chlorophyll bring about significant impact.The canopy on the direction of Korean pine and birch leaf shapes are not significantly affected.And that health and 1-year-shape between the Korean pine needles also not significantly different.Site conditions and a high degree of canopy leaves of many plants will have an impact on the shape and direction of the canopy little impact.Conifer shape of the leaves in the short term no significant difference.This reflects the water and nutrients and light shapes of leaves have great potential impact.