| Resource and environmental carrying capacity refers to the total number of humans and their corresponding societies that can be sustained by human beings on the premise of ensuring that human beings develop economic activities while rationally developing natural resources and protecting the ecological environment,based on the material conditions required for regional development total economic activity.In recent years,with the rapid development of society and economy,the conflict between human beings and natural resources and the ecological environment has gradually intensified,leading to a series of problems such as lack of resources and deterioration of environmental conditions.Under such circumstances,related research on the carrying capacity of resources and environment has become an important content of regional sustainable development,and relevant countermeasures and suggestions have been provided for regional protection and sustainable development.As an important driving region for the national implementation of the rise of central China and a high-quality economic development area,the area around Poyang lake is of strategic significance to Jiangxi province and the whole middle and lower reaches of the Yangtze river,and is also of decisive significance to maintain the ecological environment stability of the whole middle and lower reaches of the Yangtze river.Therefore,this paper takes the area around Poyang lake as a research area,and constructs a comprehensive resource and environment carrying capacity evaluation model that takes into account human activities from the three aspects of human activity intensity,resource carrying capacity,and ecological environment carrying capacity.Evaluation and analysis of the resource and environmental carrying capacity around the Poyang lake region in 2015.The main research contents and conclusions of the paper are as follows:(1)The spatial distribution of human activity intensity of the region around Poyang lake area is obviously different,and the overall characteristics are high and low in the middle.Among them,Nanchang urban area and Shangrao urban area have relatively strong human activity intensity,and their average human activity intensity values are 0.488 and 0.536respectively;Wuning county,Zixi county and Yihuang county have the lowest average human activity intensity values.Human activity intensity values were 0.172,0.172 and 0.176.There is a significant positive spatial correlation between human activity intensities in districts and counties of the region around Poyang lake,and local spatial autocorrelation patterns are mainly high-height(HH)aggregation and low-low(LL)aggregation.(2)The overall spatial difference of the resource carrying capacity around the Poyang lake region is relatively large,and generally presents the characteristics of high in the middle and low in the periphery.Nanchang county is the district and county with the highest resource carrying capacity,with an average resource carrying capacity value of 0.840.The districts and counties with the lowest resource carrying capacity are Wuyuan county,Wuning county and Zixi county,and their average resource carrying capacity values are only 0.276,0.282 and 0.283.(3)The ecological environment carrying capacity of the region around Poyang lake is gradually weakened from southeast to northwest.Guixi county has the highest carrying capacity of ecological environment in Poyang lake region,with an average carrying capacity of 0.610.Ruichang city,xiushui county and wuning county are the areas with the weakest ecological environmental carrying capacity,and their average ecological environmental carrying capacity values are only 0.099,0.122 and 0.188.(4)The area with relatively high comprehensive carrying capacity of resources and environment of the region around Poyang lake is located in the middle area of the study area.The comprehensive carrying capacity of resources and environment around it is relatively low,and its spatial differences are large.The comprehensive carrying capacity of resources and environment in Nanchang city and its surrounding counties is relatively the highest.For example,the average carrying capacity of resources and environment in Nanchang county,Anyi county and Nanchang city is 0.650,0.550 and 0.547.The comprehensive carrying capacity of resources and environment is relatively the lowest the districts and counties are Wuning county and Xiushui county,with average resource and environmental carrying capacity values of 0.241 and 0.253.(5)Based on the analysis of the limiting factors of the carrying capacity of resources and environment in region around Poyang lake,this paper summarizes the pressure of the carrying capacity of resources and environment in region around Poyang lake,and puts forward some suggestions to effectively improve the carrying capacity of resources and environment in region around Poyang lake. |
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