Resources Investigation And Risk Assessment Of Wild Ancient Trees In Jin’an District

Jinan district,which located in the northern part of fuzhou,is an urban area combined urban and rural areas and mountainous plains.It has a total area of 552 square kilometers,of which 429 square kilometers is the area of Beifeng mountain.In recent years,the central government has put more emphasis on ecological construction,and the importance of wild ancient trees as a precious legacy of nature and predecessors has become increasingly prominent.As an important resource in the mountainous area,the wild and ancient trees in jinan district are closely related to the local people’s life,according to the 2001 "national fomous trees census document technical regulations,creek township,HuanXi town of ShouShan Township,sun and XinDian Town sofukuji around four villages and towns to conduct a comprehensive survey,and establish the resources archives.In botany,ecology,landscape design,risk assessment as the research foundation,to the mountains and the trunk of the tree,canopy,growth environment and characteristics,analyses the effect of administration and protection of trees,using the analytic hierarchy process(AHP)to conduct the risk assessment of jinan district ancient mountains,and USES the method of risk evaluation index matrix of jinan district mountains ancient tree risk grade comprehensive evaluation.The main conclusions are as follows:(1)In the field of wild tree species,there are 22 species of wild and ancient trees in jinan area,which belongs to 15 families and 20 genera,and there are 10 families and 12 genera of 14 species.Gymnosperms have 5 families and 8 genera 56 species.The most numerous species of taxus in turns is Taxodiaceae,Leguminosae sp and pinaceae.(2)In terms of the level of wild and ancient trees,there are 6 fitst-grade wild trees in jinan district,17 second grade and 80 third grade.National I level protection of rare tree species have 3 3 genera,3 kinds of 16 strains.National II level protection of rare tree species have 3 3 genera,3 kinds of 16 strains.The first batch of local protection of Fujian province precious tree has 3 genera,3 kinds of 27 strains(3)Assessment of the risks of ancient trees with risk management aspects of the ancient trees,the most prominent problems are mainly not set the lightning rod,surface by cement block,is a shallow root system more ancient trees,fast-growing tree,non-professional person in charge of the management,etc.It can be seen that the main risk of jinan area is due to poor management protection.(4)On the basis of risk evaluation system and criteria,will ShouShan Township Lin Yang temple of podocarpus trees from the growth space,human disturbance,landscape design and cultural fusion four aspects has carried on the promotion transformation,makes every effort to highlight podocarpus connotation value in one thousand.Finally,the paper summarizes Jinan district’s wild and ancient trees protection points,put forward the wild trees management optimization Suggestions,dig out atest value in ecological construction.The protection managements of wild and ancient trees provide the reference for the future.