Study On Cultivate Characteristic And Management Result Of Phoebe Bournei

with the improvement of living standards of the people and the development of social economy, The demand for high-quality , precious broad leaf material of the market increases day by day. phoebe bournei belonging to Lauraceae family.is High-quality broad leaf trees, in recently,because of the timber being very scarce. The price of the large foot-path material of phoebe bournei rises violently all the way. thereforce developing afforest of phoebe bournei artificially is very considerable, because of phoebe bournei growth slowly in Initial stage,most of the forest of phoebe bournei grows bad., in this text, through making investigations to wiidwood and artificial forest of phoebe bournei and including experience that succeeds in afforesting of phoebe bournei have certain realistic meanings in protecting phoebe bournei . The main result and conclusion following:(1) Regard phoebe bournei wiidwood in mingxi as the research object, Study the quantity characteristic of phoebe bournei wiidwood community and the state distributing. Adopt the method that " the space array replace time and change " to analyse population's structure of phoebe bournei wiidwood and Use such methods as one degree of indexes , Iwao equation and Taylor exponential rule model ,etc. study rare endangered plant Space distribution pattern and trends of phoebe bournei. the result show:(1)The wiidwood of phoebe bournei make up abundantly , the system structure is rational , phoebe bournei population has greater important value, is main plant;(2)On the advantage population's structure of wiidwood of phoebe bournei, the structure of phoebe bournei population takes the form of Pyramid, for the increasing type population,however,the stucture of the other population takes the form of inverse Pyramidjs descending type population,indicate that the population of phoebe bournei is dominant in the community.(3) in the space distribution pattern and dynamic,the population of phoebe bournei appears random distribution, the basic composition distributed is phoebe bournei, In the course of growing up in the population. Distributed pattern transformed from assembling to the random type .(2) Adopt logarithm progression model predict and examine to wiidwood species large degree, the result show : Community this species many degree is it follow logarithm progression distribute the law to distribute . Adopt many kinds of abundant degree , diversified index to carry on comparative analysis to community's species variety , Indicate this species of layer of phoebe bournei wiidwood community arbor is relatively poor, the floor species of the bush is relatively abundant. the community is still at unstable stage.(3) according to 2*2 United tabulate, Use analysis of variance , connection coefficient AC, such serial technology as statistics amount , Ochai index , Dice index and Jaccard index ,etc.determine the overall connection coefficient among 19 arbor populations in phoebe bournei community arbor layer,the result shows: phoebe bournei community binds determining among arbor kind, uses above-mentioned serial technology to be dandy, The binding is bound for the remarkable negative among whole many species; AC value is it positive bind kind to have 49 , is it negative bind kind to having 121 pairs , 1 pair is at all independent to shoulder to calculate out; The counting amount has examined 171 pairs, Among them 0 pairs present extremely remarkable straight connection, 9 pairs present remarkable positive connection, 34 is bound to presenting the extremely remarkable negative , 13 is bound to presenting the remarkable negative;(4) In this paper ,the percentages of important value of Phoebe bournei and its associated species are regarded as the measure of the competitive parameter ,and the dominant degree of normal stands are regarded as their environmental capacity.the final results of competition of inter-species are discussed with the Lotka-Volterra equation of competition ,which shows that the relative dominant degree of Phoebe bournei and its associated species are 76.85% and 25.15% respectively when reaching their balance .Here mixed trees can jointly dominate this community, and the whole community is controlled by Phoebe bournei population.(5) Carry on researching the characteristics of niche of 12 main populations in phoebe bournei communityo the result show: phoebe bournei, L.megaphylla ,M.thunbergii, are wide niche varieties of treeso E.japonieus are the narrow niche varieties of treeso phoebe bournei and niche have greater similar degree than the wide varieties of treeso It is apt to form the mixed forest with these broad leaf varieties of trees ? The competitions of different ones are not very violent in the community, the community is still in unstable state.(6) The provenance test on 21 provenances of P.bournei from 2 provinces such as Fujian and jiangxi Province,was carried out in mingxi nursery garden. With statistical methods ,such as variance and correlation analysis,the genetic variations of P.bournei were studied,based on the investigation of 1-year-old seedling traits from different provenance.The results showed there were abundant variations within the P.bourneiand significant or very significant differences among provenances in seedling height,diameter,lateral branch,dry/wet weight of stem or root etc.The variations were mainly controlled by genetic factors.There was very significant correlation between different organs of seedling of different provenacnes in biomass distribution.According to this analysis,6 superior provenances were tentatively selected.They were longnan,yifengji an Jianganshan,Shangyou and youxi ect,whose average genetic gain of their height and diameter were 19.16% and 20.3% respectively.The selection effect was striking.(7) The result of management to phoebe bournei artificial forest is studied, the result show: The demand for standing against of phoebe bournei is comparatively stricto Suitable for growing setting up in U II grade, and the downhill path is better than to hit slopes , go up a slope to growo Thereforce afforestation of phoebe bournei must choose good standing , Especially downhill path? According to the result of investigation phoebe bournei mixed forest is better than the pure forest growth,suit to build pure forest, the masson pine relatively...