Conservation Strategies And Research Of Baili Azalea Landscape Based On Characteristics Of Community And Aesthetic

The Baili Azalea National Forest Park in Guizhou province is a few relatively intact Rhododendron forests of high altitude in China.It is the largest one of the so far founded wild Rhododendron forests at the same latitude in the middle and low altitude area in the earth.The Baili Azalea National Forest Park has a rich resources,and an important Rhododendron gene pool of germ plasm.Not only is it of great value in scientific research but also in tourism area.In the meanwhile,the geological structure of Baili Azalea is limestone,a large of carbonate on the ground is corrosion by rain,the reverse succession forest community vulnerable to disturbance.Due to improper business and extensive management model of tourism affect the health of forest ecosystem.Overload tourists in blossom age is harmful to natural regeneration of Rhododendron forests.The different degrees of disaster and man-made interference of Rhododendron in the park against the development of Rhododendron community for long-term.Hence,the basis of ensuring health succession of Rhododendron forests and development of tourism for a long term,protect eco-community and reasonable planning,scientific of resources of Rhododendron forests resource in park.Based on the different degree under the disturbance of Rhododendron community and the twice of comprehensive survey in Baili Azalea National Forest Park,found the Rhododendron community is disturbed by human.The author divided into interfere with mild、moderate and severe interference at three levels,and select a representative sample with full investigate in the sample area.The study research the structure of Rhododendron community with a diversity index and niche theory,and research the azaleas landscape preference of visitor with the SBE model.1)Species richness and bio-diverstiy of Rhodoendron community under mid-disturbance are higher than others.The result indicator that community under mid-disturbance is conductive to maintain the diversity of plant species in the community.The species richness of community under severe disturbance are inferior to others.There was no significant difference between the species richness of herb layer under light disturbance and heavy disturbance.The plant community of undergrowth in mid-disturbance has heliophyte.This may be due to the stand structure change,forest light structure change,is advantageous to the azaleas seeds and other sun tree bud.Not only provides germplasm resources of the azaleas for update and at the same time,also suitable for other trees growing environment,but also explains why moderate interference has higher species diversity.2)Under different disturbance intensity of the Rhododendron species has different ability to utilize the environment.The R.irroratum under light disturbance has the highest ability to use resources and overlap with other tree species than mid-disturbance and heavy disturbance.The R.delavayi and R.agastum under the mid-disturbance and heavy disturbance has higher ability to use resources than R.irroratum.At the same time,there are some deciduous tree species and evergreen trees species under mid-disturbance and heavy disturbance can tolerant sunshine or shade.While community under mid-disturbance has tree species in the early stage of succession,which showed that the community structure under mid-disturbance has been a certain degree of degradation.3)Interspecific competition of constructive species in park.The result showed that the niche breadth value of R.Irroratum,R.delavayi and R.agastum are wide.but the niche breadth and niche overlap value of R.delavayi and R.agastum are bigger than R.irroratum.The result showed that the population of R.delavayi and R.agastum are more stable than R.irroratum,and they can replace R.irroratum.However,from structure of basal diameter we can realize that the trend of R.delavayi population from stable to recession,little update layer lead to weak population.While the population of R.agastum is stability and R.irroratum is growing have strong regeneration ability.Although the population of R.delavayi is more dominant in resource,but it is transitioning into recession and lack of renewal layers.So predictable,long-term population development in the future,the ability to update R.agastum and R.irroratum will have more advantages.At the same time,it is necessary to take the protection measures and artificial tending measures for R.delavayi.4)Visitors enjoy azalea forest landscape common preferences medium stadia,and is subject to the Rhododendron community of moderate interference is more popular with tourists.Community landscape is effected by quantity of design and color,layout,floristic composition,forest gap,community feeling and canopy to perceptual and community boundary of the inner,and influenced with forests,around the hard surface,the construction sketch and the effect of the external distractors.Depend on the conclusion,the writer propose that it is better to rest by turn of landscape,proper artificial tending R.delavayi,improve the community diversity,pay attention to the species composition,the amount of rigid professional opinion for park development,landscape protection and continuation has guidance and reference in future.