Studies On Characteristics Of Tree Species Utiization In Village Greening In Central And Eastern Shandong Province

Started from "sides greening",our country village greening work has been carried out for many years,however,used in greening tree species in the villages as village type and its change rule and the geomorphic types of rural residents of the village still lacks system such as research on the demand of greening tree species,and has become the current scientifically important bottleneck for the development of the village green.This study in 40 villages in shandong area of Middle East,for example,for different types of villages greening tree species in detail the status quo of the application of field survey and visiting investigation,analysis and comparison of greening tree species,quantity and health characteristics with the topography and geo morphology,the changing rule of the economic development model,and combined with local residents greening satisfaction and demand analysis,explore the village greening tree species use problems and Suggestions,summarizes the typical tree application mode,to provide theoretical support for guiding rural afforestation projects.Research findings:(1)There are great differences in the use characteristics of tree species in villages with different topography and landform.The species composition of the family and genus of the greening tree species in plain villages was the most abundant,reaching 28 species,44 genera and 70 species.The proportion of species and number of native tree species is the highest in mountainous villages,reaching 83.05%and 90.70%respectively.Punica granatum was the most dominant tree species in the plain type,Populus tomentosa was the most dominant tree species in the hilly type and coastal type,and Sophora japonica was the most dominant tree species in the mountain type.Cerasus serrulata ex London var.lannesiana Makino,Punica granatum and Lagerstroemia indica were the tree species with the highest application frequency in the plain type,while Sophora japonica,Punica granatum and Diospyros kaki were the tree species with the highest application frequency in the hilly type,Punica granatum,Toona sinensis and Sophora japonica were the tree species with the highest application frequency in the mountain type,Firmiana platanifolia,Diospyros kaki,Ziziphus jujuba and Albizia julibrissin were the tree species with the highest application frequency in the coastal type.The proportion of healthy trees in plain greening was the lowest,only 57.18%,and the proportion of sub-healthy tree species was much higher than other types.(2)There are significant differences in the use of tree species in villages with different economic development models.The species composition of family and genus of greening tree species in agro-type and forest-type villages is relatively rich.The proportion of species and number of native tree species is the highest in tourism villages,reaching 83.02%and 94.06%respectively.Punica granatum is the most dominant tree species for agriculture and industry,and Populus tomentosa is the most dominant tree species for forestry and tourism.The tree species with the highest application frequency for agriculture type are Sophora japonica and Punica granatum,the tree species with the highest application frequency for forestry type are Punica granatum,the tree species with the highest application frequency for industrial type are Ginkgo biloba,and the tree species with the highest application frequency for tourism type are Sophora japonica,Diospyros kaki and Juglans regia.The healthy proportion of trees in tourist villages was the highest(61.28%)and the sub-healthy proportion was the lowest(24.38%).(3)The use characteristics of tree species in different greening Spaces are quite different.The total number of courtyard space is more abundant,and the species of tree species in public space is more diverse.The proportion of native tree species is higher in water bank and forest space in wai village.Punica granatum is the most dominant tree species in courtyard greening,Ginkgo biloba is the most dominant tree species in road greening,sifu begonia is the most dominant tree species in public greening,and Populus tomentosa is the most dominant tree species in water bank and forest greening in wai village.The most widely used tree species are pomegranate.The most frequently used tree species in road greening are ginkgo and purple leaf plum.The most frequently used tree species in public greening are ginkgo and national locust.The most widely used forest afforestation in the water bank and wai village is the Chinese poplar.The healthy condition of tree species in the water bank green space is the best.(4)For the residents’ satisfaction and demand for greening,up to 94.23%of the rural residents are very supportive of the current rural greening and beautification projects,and most of them are satisfied with the current greening situation in the village.However,the overall road greening in the village does not meet the expectations of the residents.52.19%of the villagers believe that improvement is needed;the plain and industrial villages have much lower demand for increasing the green area and tree species than other types of villages;mountainous and tourist villages.It is more inclined to plant local native tree species;the demand for greening tree species in different types of villages is very different,and it is necessary to select tree species with corresponding functional uses according to actual conditions to meet the individual needs of residents.(5)Overall,the use of central and eastern regions in shandong province rural greening tree species at the present stage also has some problems,such as lack of overall planning,part of the village of tree species selection and drab,extensive tree configuration is not reasonable,the late maintenance management and so on,the need for issues from different types of village green space increased the quality and level of greening tree species.