Study On The Biotope Mapping And Applicaiton Of Urban Park In Yichang City

Biotope loss is the main reason for the reduction of urban biodiversity.As a hot area of biodiversity in cities,urban park green spaces can reveal the spatial distribution pattern characteristics of their current biotope,obtain ecological data,and present the problems of their current biotope through biotope mapping and quality evaluation.This is a necessary prerequisite for effective biodiversity conservation and enhancement.Therefore,on the basis of studying the relevant methods of biotope mapping,this paper constructs a biotope classification and biotope quality evaluation system suitable for urban parks.Taking three typical urban parks in Yichang City as examples,this paper conducts biotope mapping and quality evaluation research,and analyzes the biotope composition,plant composition,the diversity characteristics of autophytes and the differentiation characteristics of autophytes in different biotopes,Evaluate the biotope quality of each park green space and draw a biotope grade map.Finally,based on the analysis of biotope map data and the evaluation results of biotope quality,optimization strategies were proposed for three typical park green spaces,exploring the application methods of biotope mapping in biodiversity conservation,biotope restoration and construction,as well as urban park green space design and upgrading.The aim is to provide new perspectives and connecting points for landscape architects to practice biodiversity conservation and planning design.The main research findings are as follows:(1)The number of biotope categories in Canal Park,Children’s Park,and Riverside Park is the same,while the number of biotope subcategories and subcategories in riverside Park is the highest,and Canal Park is the lowest..(2)The dense forest(G1)biotope and sparse forest(G2)biotope are the main green space biotope subclasses in the three urban parks.The dense forest(G1-L1+M)biotope dominated by single-layer middle-aged trees is the main biotope subclass in Canal Park and Riverside Park,while the dense forest(G1-L1+O)biotope dominated by single-layer elderly trees is the main biotope subclass in children’s parks.(3)Canal Park is the park with the highest abundance of spontaneous among the three typical urban parks in Yichang,mainly due to the rich marginal biotope and low human activity interference in the park.From the perspective of the interior of the park,there are significant differences in the abundance of self growing plants in different biotope types of typical urban park green spaces,but there is no regular pattern of high or low abundance of self growing plants in a certain biotope type.(4)In terms of the impact of a single vegetation Structure factor on the abundance of spontaneous,the three urban park greenbelts showed significant differences in the canopy density factor,of which the dense forest(G1)biotope in Canal Park and Children’s Park had the lowest abundance of spontaneous,followed by the sparse forest(G2)biotope;Riverside Park is the opposite.(5)The overall biotope quality of Canal Park and Children’s Park is good,with Class II biotope area accounting for over 50%.However,the overall biotope quality of Riverside Park is poor,with Class II biotope area accounting for less than 20%.Among the three typical urban park green spaces,there is no Class III biotope with the highest biotope quality.(6)The Canal Park can improve the biotope quality of this biotope type by appropriately increasing local plants and reducing canopy density;The biotope type in children’s parks with a relatively high proportion of biotope area but a Class I biotope quality is a sparse forest mainly composed of single-layer aged trees(G2-L1+O).The management level of this biotope type can be appropriately reduced to improve the biotope quality;In Riverside Park,trees in dense forests(G1-L1+M)dominated by single-layer middle-aged trees are manually sorted to reduce canopy density.After sorting,shrub layer vegetation is replanted to create a microenvironment conducive to the survival of self growing plants and improve their biotope quality.