Research On The Measurement Of Ecological Space Resilience And Control In Lueyang County

As an important geographic-ecological transition zone in China,the Qinba Mountains have high environmental complexity,climate sensitivity,resource dependence and regional closure,and Lueyang County is a typical resource-based mountain county in the Qinba Mountains with complex topography and restricted human activities.The superposition of long-term inappropriate human activities and complex natural ecological environment has led to high susceptibility to ecological degradation and increased spatial fragmentation.In recent years,with the implementation of ecological civilization strategy,the high standard protection,which is the core of the security of ecological resources and environment,has been a method to achieve the harmonious development between human beings and nature,but the traditional manual intervention for natural restoration cannot resolve the uncertain ecological problems caused by the complex and variable external disturbances in Lueyang County.Therefore,it is necessary to help ecological space restore ecological functions,rely on its own ecological processes to source abatement of external pressures and risks,provide more efficient ecological service functions through learning,transformation and innovation,enhance the resilience and sustainability of ecological space,and help the synergistic high-quality development of the three living spaces.Using multidisciplinary theories and methods,Lueyang County,Hanzhong City is used as the study area,and use "theoretical reference--characteristic investigation--resilience measurement--mechanism revealing--spatial control--system generalization" as the core idea.The core idea of this paper is "theoretical reference-characteristic investigation-resilience measurement-mechanism revealing-spatial control-system generalization".Firstly,through the analysis of the ecological background characteristics of Lueyang County and land use changes in the past 30 years,the characteristics and problems of ecological space in Lueyang County are further clarified.Second,the ecological spatial resilience measurement system of Lueyang County is constructed based on the framework of "static evaluation +dynamic simulation",and the ecological spatial resilience characteristics of Lueyang County are explored with the help of Arc GIS spatial analysis and complex network analysis.Third,starting from the dimensions of ecological elements and ecological process,clarifying the relationship between disturbance and resilience in ecological processes,explaining the mechanisms underlying the operation of ecological spatial resilience.Fourthly,a corresponding spatial control scheme is formulated and the methodological system of resilience control is summarized.The main conclusions of the study are:(1)The ecological land in Lueyang County shows a trend of "slow fluctuation-sharp change-gradual stabilization" during 1990-2020,and the main The main disturbing factors are urban expansion and pollution emission and other human activities;(2)The ecological space of Lueyang County shows the spatial toughness characteristics of " the overall distribution is uneven,high values in the north-east,low values in the centre,high values in the mountains and low values in the basin ",and the network characteristics of "strong overall correlation and poor regional stability";(3)Established the ecological spatial control method of Lueyang County of "control stratification-functional zoning-implementation classification","structural control of the whole area,area(3)established the ecological spatial control method of "control hierarchy-functional zoning-implementation classification",the vertical scale of"global structural control,area coordination control,unit implementation control" and the horizontal element transfer system of "overall coordination-element guidance".This study uses the cross-fertilization of multidisciplinary theories to help grasp the interrelationship and inner mechanism of disturbance,resilience and ecological processes,which can provide a reference of theoretical and technical methods for ecological spatial resilience control in Lueyang County and improve the scientific and operational aspects of spatial control,and also has some significance for other resource-based counties in the Qinba Mountains.