Landscape Ecological Security Pattern Research And Planning Of Beijing

In this paper,I take the City Beijing as the research object,and analyzes the landscape ecological security pattern in Beijing,according to the results,give some corresponding optimization solutions and recommendations.During the analysis,used the appropriate method named grain size reverse method to determine the source of ecological threshold.When building ecological resistance surface,taking into account the interaction between ecological resistance,resistance to surface constructed used the traditional method and kriging method to construct ecological resistance surface.When screening sources,used the conefor sencinode software to rank the sources.choosed top-ranking 133 ecological sources as the "source." When grading sources,using the method to sources with the Beijing Municipal Land Use Zoning FIG superposed,Ranked the Beijing Ecological sources into first class,second class and third class.used Beijing's 2001 and 2013,1: 10000 land use type to analysis diagram analysis source transition probability matrix at all levels,so as to get the probability of source optimizing.The results showed that:(1)680m is the best analysis grain for Beijing ecological security pattern,in this condition,Beijing ecological flow resistance value is minimum,in this condition,Beijing is consist of 12 ecological sources.in which,four are first class source.six second class source,two third class source.(2)There are three first class ecological corridors,two forest ecological corridor;one farmland ecological corridor.Nine second class ecological corridor,six woodland ecology corridor,one grassland ecological corridor,and two ecological construction land corridor.Third class ecological corridor has forty two.(3)According to the characteristics of the functional location in Beijing distribution node,the node may have six types,a total of 96.including 20 cultivated land types of nodes,41 woodland types of nodes,5 grass types of nodes,3 water area types of nodes,25 constructionland node.2 unused types of nodes,Ecological forest and farmland ecological types of nodes occupy a larger proportion of ecological It will be Beijing's main construction node content.