Landscape Of Heilongjiang Twin Mountain National Forest Park Research On Pattern And Network Optimization

The forest green landscape is an important ecological system for the sustainable development of the city.It is the basic guarantee for the residents' physical and mental health needs,and is the city's ecological barrier and microclimate water conservation area.The analysis of landscape pattern and construction of ecological network system can reduce the harm caused by landscape fragmentation,and it is of great significance to biodiversity conservation and ecosystem stability.This study uses GIS as a technology platform and takes landscape ecology as the perspective.The digital elevation data of the Shuangzi mountain national forest park,the second survey data of the forest resources in 2015,and the forest phase map are the basic data.Using the landscape pattern index method and GIS spatial analysis method,the landscape pattern of the study area was analyzed from the aspects of landscape heterogeneity,diversity,and patch characteristics,in addition,the relationship between landscape pattern and topographic differentiation characteristics was explored,which revealed the distribution curve of landscape pattern with elevation factor,slope gradient and slope direction.In view of the existing problems in the landscape pattern of the National Forest Park of Shuangzi mountain national park,the optimization measures were proposed,and the ecological network system was constructed and optimized based on the minimum cumulative resistance method,with a view to providing a direction and scientific basis for the rational use of forest resources,management,protection and sustainable management.The overall patch size of the landscape types of the Shuangzi mountain national forest park varied,the distribution was uneven,and the landscape heterogeneity was not high.In addition to the three dominant tree species,the fragmentation of other landscape types was serious;From the calculation results of SHDI and SHEI,it can be seen that the landscape types in the study area are small and the diversity is not high;The results of landscape type analysis with topographic heterogeneity show that the landscape pattern of Shuangzi mountain national forest park is significantly affected by topographic factors,and the forest landscape pattern is an outstanding issue,which urgently needs to be optimized.The ecological cumulative corridor was simulated based on the minimum cumulative resistance method.Through the conceptual calculation of the landscape resistance values and the cumulative cost distance model of the Shuangzi mountain national forest park,the study found that the lack of ecological landscape corridors in the study area,the ecological network structure is not perfect,and the ecological community will be optimized.Provide a good living environment for the forest landscape,and finally form 10 important ecological corridors and 15 potential corridors to provide protection for landscape circulation and media information transmission.