Research On The Cooperative Changes Of Green Infrastructure Elements And Mining Activities In Resource-based Cities

The mining activities in Wuan,a resource-based city,pose a serious threat to the local ecological environment.Based on the above background,under the support of The National Natural Science Foundation of China,the project of "Research on the Land Ecological Control Process and Approaches of Resource-Based Cities Based on GI Framework" was carried out.Then,based on the three years of remote sensing image interpretation data for Wuan City in 1995,2005 and 2016,this paper uses GIS spatial analysis and landscape pattern index method,to analyze the temporal and spatial changes of landscape pattern in three aspects,including the whole city,the elements of green infrastructure and mining activities.Comparing the spatial and temporal characteristics of green infrastructure elements and mining activities by introducing landscape vulnerability.Discussion on synergistic change characteristics of green infrastructure elements and mining activities in Resource-based Cities.Research indicates:(1)In the past 1995-2016 years,the landscape pattern of land use has changed drastically.Mainly from grassland to woodland.The reclamation of industrial and mining wasteland has transformed most of the industrial and mining areas into non industrial construction sites or reclaimed farmland.The fragmentation degree of the overall landscape in Wu'an City decreased first and then increased with the passage of time,and gradually decreased with the increase of the gradient;the landscape diversity index increased with time,and gradually decreased with the increase of the gradient;Industrial and mining land structure and its distribution are relatively stable,concentrated in the 1-6 gradient zone.(2)The natural green infrastructure is mainly distributed in the northwest nature reserve and the southern closure of the mountain area.The physical connection between the patches is relatively close;the semi-natural green infrastructure is mainly distributed in the first nine gradients,and the landscape is low in resolution.High connectivity.The spatial distribution of the two is quite different,and the temporal and spatial changes of natural green infrastructure are more characteristic.(3)The center of gravity of industrial and mining lands shifted to the northwest from 1995 to 2016.Most of the industrial and mining lands were distributed in the eastern and southeast regions.Patch connectivity was good,and the degree of landscape separation was low.With the increase of gradient,the spatial distribution characteristics of Group Distribution-Dispersion Distribution-Polymerization Distribution are presented.(4)Various types of green infrastructure tend to be stable after fluctuations in the distance from industrial and mining sites.The scope of the impact of mining activities on the elements of green infrastructure was obtained,namely 13.5 km of natural green infrastructure and 6 km of semi-natural green infrastructure.Through the combination of qualitative and quantitative analysis,we found that the common influencing factors between mining activities and green infrastructure elements in Wu'an include natural environmental factors such as slope,elevation,and water sources,location and transportation environment factors,government policies,and planning factors.