Park Green Space Ecosystem Health Accessement In Dapeng New District,Shenzhen

In this paper,the main research method for literature and review of the system of the previous and current scholars on urban green space system planning evaluation,evaluation index and index system related research results.Summarized and summarized the urban green space system planning evaluation,evaluation index research status and the main problems,for building a new index system to do a certain basic research.Subsequently,on the evaluation of urban green space system planning on the basis of the theory of decomposition and analysis of factors related system comprehensive analysis ethod,application related disciplines theory and method such as ecology,landscape ecology,landscape science,economics,urban planning,social science,the discipline of disaster prevention hedge,matched with the urban green space system planning evaluation index system construction.With a combination of quantitative and qualitative analysis.the index system confirmed includes such as vegetation community structure,the density of trees 10 secondary indicators.An expert scoring method was used to determine index weight,the results indicate that indicators with higher weights are green coverage rate(weight 0.15),vegetation community structure(weight 0.18),and negative ion concentration(weight 0.15).The ability to absorb pollutants(with a weight of 0.12)and the soil erosion index(with a weight of 0.10),among which the green structure shows the greatest impact on the ecological benefits and ecological health of the green space system.The orders of importance of each indicator are1,2,2,3 and 4.It shows that these indicators are important reference values for the overall evaluation of the ecological health status of park greenbelts in Dapeng New District,among which the organizational structure index was the most important reference value.the resultsshowed that the rate and greening coverage,vegetation community structure,function index of the negative ion concentration,the ability absorbing pollutants and soil erosion resistance play most important roles.Based on the analysis of the data of each indexs,the overall health condition of the park green space in dapeng new district is good.The vegetation community of Shagang Park is dominated by a single tree and multiple layers of vegetation,accounting for 65.98% and 33.38% respectively.It is relatively rich in community,and its index of service vitality belongs to the level of health,high resistance index,and various service function index values.The vegetation communities of Kuichong Park are dominated by multiple layers of vegetation,accounting for 79.36% of the total.The vegetation communities are relatively abundant.There are no significant differences of the indicators between the Shagang Community Park and Kuichong Park.The vegetation communities of Dapeng community park are mainly composed of multiple layers of vegetation,but the green area coverage and green coverage rate are only 29.22%and 29.26%.Therefore,the values of various evaluation indicators are lower,and the health level is poor.