Study On Plants And Plant Community Collocations In Shenzhen Coastal Park

As one of the special economic zones in China,Shenzhen has paid more and more attention to environmental governance and ecological protection with the steady growth of economic development.Secondly,Shenzhen is located at the junction of tropical and subtropical areas which have a coastline of 240 kilometers.In order to meet the needs of residents’ spiritual entertainment,several coastal parks have been established along the coastline since 1999.What is more,there are still several coastal parks under construction.As is known to all,good park landscaping is inseparable from the quality of the plant environment.Therefore,this paper studied the plants and plant communities of 8 coastal parks in Shenzhen,including mangrove coastal ecological park,Shenzhen bay park,Shenzhen talent park and so on.Based on the study of botany and community study,this paper investigated the growth status of the coastal enviroment.The composition of plants,plants community characteristics and soil environment of plants were analyzed from the aspects of plant status,community status,and soil status.Besides,on the basis of the survey results,two plant evaluation systems and one plant community allocation evaluation system were constructed by using the statistical method and analytic hierarchy process.This paper selected four rule hierarchy which includes ecological adaptation,the growth environment,ornamental value and application,planting and maintenance cost,and 14 evaluation factors.In coastal park community configuration evaluation system,this paper selected three criteria layer including ecological value,aesthetics,management,and maintenance,and eight-factor evaluation.Using these methods,180 species of plants and 58 plant communities were evaluated respectively.The main results are as follows:(1)The survey results of the coastal park are as follows:There are 180 species of 63 families and 143 generals in 8 Shenzhen coastal parks,of which there are 62 species of tree including 24 families and 46 generas,61 species of Shrub including 29 families,52 generals,57 species of Herbaceous including 27 families52 generals.Among the 62 species of trees,there are 11 species of deciduous plants and 51 species of evergreen plants.Among the 61 shrubs,there were 7 species of deciduous plants and 54 evergreen plants.There are 57 kinds of herbs,10 of which are annual and 47 were perennial.Soil survey show ground surface soil basic for the silty loam,part of the construction waste,stone,coarse gravel,in the determination of 52 samples,only 4 average quadrat surface soil electrical conductivity is higher than 0.6 ms/cm(Guangzhou planting soil standard),are mainly distributed in the rain garden samples,sample party 7.69% of the total number,the average conductivity is higher than 1.3 ms/cm(Shenzhen city planting soil standard)only one sample.(2)The results of plant evaluation and analysis are as follows:There are 13 species of trees that can be cultivated and promoted in Shenzhen Binhai Park,accounting for 20.96% of the total number of trees,25 species of shrubs,accounting for 40.98% of the total number of shrubs,20 species of herbs,accounting for 35.08% of the total number of herbs.(3)The results of the evaluation and analysis of the community configuration are asfollows:There are 5 communities in the community level,which are mainly distributed in Shenzhen Bay Park,accounting for 8.62%.There are 48 to grade II,accounting for 82.75%.There are 5 quality to grade III,except for Futian Mangrove ecological park,the Qianhai sea embankment Park and the West Bay Mangrove Park,the rest are evenly distributed,accounting for 8.62%.The mass is 0 of grade IV.The results of the survey and analysis show that the evaluation of shrubs and herbaceous plants in Shenzhen coastal park is better than that of arbor plants.The arbor roots were affected by the salt damage of underground soil,which further affected the growth of arbor plants.In general,the landscape effect of plant community landscape is good,but there is no high-quality community,especially in the face sea communities near the sea footpath and the coastal walkway.The plant growth is poor due to the invasion of sea breeze and salt fog.This study recommended 6 species of trees,8 shrubs,and 9 herbs be suitable for planting in the coastal area.8 species of trees,17 shrubs,and 11 herbaceous herbs were recommended in the middle of the central part of the plant,the middle of the building block and the back sea area near the municipal road.In addition,three suggestions were made for the configuration of three landscape plant communities in the main landscape areas of the coastal park,including the coastal area,the central area,and the dorsal area of the sea,to provide the reference for the construction of Shenzhen Coastal Park.