Study On The Characteristics And Spatial Optimization Path Of Nature Protected Areas In Jiangxi Province

Constructing the system of natural protected areas has become a major strategic task of ecological civilization construction in China.Jiangxi Province has carried out related work,and it is in urgent need of related scientific research.This study collected information,9types of 774 natural protected area,administrative area,level,including construction s boundaries or geographic coordinates,using the method of mathematical statistics and spatial analysis,from the quantity,scale,process,and in different geographic unit scale spatial distribution pattern of much Angle,such as spatial distribution analysis of the natural protected area.On this basis,the most prominent lake-plain ecological area in northern Jiangxi Province was taken as the breakthrough point,and the key ecological processes were extracted as clues to construct the spatial corridor of regional natural protected areas.The current situation and optimization ideas of regional natural protected areas were analyzed,and the spatial optimization suggestions of natural protected areas in Jiangxi Province were put forward.The main conclusions are as follows:(1)During the 44 years from 1976 to 2020,the protected areas in Jiangxi Province experienced three stages: initiation,development and transformation.The protected areas,number,type,scale and density all showed a continuous increasing trend.However,the overlapping phenomenon among different types of protected areas was prominent,especially among large protected areas.(2)The area with the largest proportion is the nature reserve(29.27%),followed by the water conservancy scenic area(28.40%).national nature reserves protect a larger area(61.41%)with a small proportion(24.94%).There is the most serious overlap between scenic areas and other protected areas.There is a competitive relationship between nature reserves and water conservancy scenic areas,and a synergistic relationship between forest parks and wetland parks.(3)Natural protected area in the provincial scale aggregation generally weak,the protected area to a linear distribution along the mountains,to Yu Shan-Luo Xiao mountains-a line is bounded,clustering is stronger in the north and natural protected areas are sparsely distributed in the south.At the municipal scale,Jiu Jiang City is the hot cluster area of natural protected areas,and Nanchang City is the area with the lowest comprehensive density.At the county level,there is a tenfold difference in the number of protected areas.(4)By analyzing the spatial heterogeneity of ecological functions,we can reveal the law that the aggregation of natural protected areas increases significantly with the decrease of scale.The hot spots of natural protected areas in the first-level ecological area are concentrated in the lake plain of northern Jiangxi and the mountainous and hilly line of northwest Jiangxi,showing the linear distribution of corridors.Natural reserves in the secondary ecological sub-region are mostly concentrated in geographic units composed of wetlands,forests,and farmlands.There are obvious differences in quantity,area and type between the middle and upper reaches of the river and the middle and lower reaches of the geographic units in the tertiary ecological function zone.(5)Poyang Lake area,the lake plain ecological area in northern Jiangxi Province,has the characteristics of "one line and two pieces",and the integrity of ecological protection in the West and south is significantly higher than that in the East and North,The integrity of the pattern and the ability to grasp important information need to be improved,and the protection level of some nature reserves needs to be improved.The integrity of the pattern and the ability to grasp important information need to be improved,and the protection level of some nature reserves needs to be improved.