Study On Ecological Evaluation And Restoration Of Surrounding Mountain Landscape In Built Area Of Taiyuan City

With the rapid development of urbanization in my country and the continuous improvement of residents' living standards,especially since the beginning of the 21 st century,a better living environment has become a strong demand for everyone.The rapid development of the city makes the heterogeneity of the urban landscape stronger and stronger,and the connection with the surrounding natural landscape is getting closer and closer.The surrounding natural landscape has gradually become a buffer and protective barrier for the urban ecological environment.Under these premises,people are encouraged to evaluate,plan,and restore the surrounding landscape of the city.Taking Taiyuan City as an example,the paper investigates the land cover types of the surrounding mountains in the built-up area of ??the city,and constructs a landscape ecological evaluation model from the perspectives of vegetation suitability,visual sensitivity and ecological risk.The evaluation and zoning planning research are divided into 3 evaluation levels and 4 functional areas.Then,it evaluates the landscape impact of the damage surface from two aspects of ecological risk and visual sensitivity,and then evaluates the urgency of the damage surface restoration and proposes the damage surface grouping.From the perspective of project implementation,the damage surface is divided into 10 types.According to the damage surface classification,restoration measures such as stable slope,soil and water conservation,and auxiliary natural restoration are proposed to achieve a clear development model of the surrounding mountain landscape and improve the quality of the ecological environment.The purpose of making the destroyed landscape enter a virtuous circle,providing theoretical guidance for the sustainable development planning of Taiyuan City,the main research results are as follows:1.Based on field surveys and satellite data identification,natural landscapes such as arbor forests account for 76.3% of the total mountain area.Cultivated land is the main method of land development and utilization,accounting for 8.77% of the total mountain area.Bare soil and damaged surfaces account for8.17% of the total mountain area,which is the primary reason for the destruction of the ecological environment of the mountain.2.From the perspective of landscape structure,arbor forest land is the main landscape type.After analyzing the landscape pattern,it is found that the biological carrying capacity and ecological stability of the arbor forest is relatively strong,but the ability to resist interference and spread is relatively weak;the cultivated land has the characteristics of local concentration,fragmentation and dispersion in a small area,mainly concentrated in the north of Dongshan District,from close to the city Lateral spread to the interior of the mountain,weak resistance to interference and spread,high bio-carrying capacity and ecological system stability;the damage surface has the characteristics of local concentration,small area fragmentation and dispersion,strong resistance to interference and spread,and relatively high bio-carrying capacity High,the ecosystem stability is low.3.According to the ecological evaluation of the mountain landscape,the area of ??mountain patches with high visual sensitivity accounted for 27.11%.The patch area with high vegetation suitability accounted for 28.84%.The area of ??high ecological risk patches accounted for 20.78%.According to the comprehensive evaluation of landscape ecology,the area of ??high-grade patches accounted for28.87%.Among them,the three types of plaques have larger areas and the highest comprehensive evaluations,and require extremely high attention.4.The mountain has a total damage area of ??1573 hectares.This study divides it into 10 types.The patches are of different sizes,partially concentrated,and small areas are broken and scattered.They are scattered in all corners of the east and west mountains.The restoration project is difficult and applicable.Batch recovery projects are scattered.The area of ??gentle soil slope accounts for 69.02% of the damaged surface.About 1/3 of the area is located in 3 patches near Dongshan Liugou Village,the maximum distance between patches is not more than 1.5km,the area is large,the distribution is concentrated,and the construction is easier,which can reduce the difficulty of project development to a certain extent.5.Through the evaluation of the landscape impact of the damaged surface,the area of ??the damaged surface with high visual sensitivity accounts for 52.6% of the total damaged surface.The area of??high ecological risk patches accounted for 57.88%.The area with high landscape influence accounted for 77.59%,and the evaluation grades were different based on visual sensitivity and ecological risk.Among them,two types of patches had the highest impact and the largest area.6.According to the ecological impact assessment of the damaged surface,the urgency of repairing the damaged surface,and referring to the above research results,the damaged surface is divided into 7 groups and 4 urgency levels,which can be restored in 3 batches,starting from stabilizing the terrain and improving the slope.From the perspectives of surface material types,soil and water conservation,landscape planning,economic benefits,etc.,each group of damage surfaces and damage surface types are proposed to stabilize the slope and improve the material type of the slope as the short-term goal,and to create a pleasant ecological environment as the long-term goal.Planning,and applicable natural restoration,semi-natural restoration,artificial restoration and other measures.