Research On Spatio-temporal Differences And Driving Effects Of Environmental Well-being Intensity In Poyang Lake Area

Alleviating the pressure on the ecological environment caused by the improvement of human well-being is a fundamental requirement for coordinating economic development,the improvement of well-being and environmental protection,as well as an inherent meaning of promoting sustainable development.This thesis proposes the concept of environmental well-being intensity and establishes an evaluation index system of environmental well-being intensity.Based on this,the environmental wellbeing intensity(EIWB)of 25 counties in Poyang Lake area during 2007-2020 is measured.On this basis,global spatial autocorrelation,Markov chain,Dagum Gini coefficient and other methods are used to explore the spatio-temporal differences of environmental well-being intensity in Poyang Lake area during 2007-2020.Kaya identity and LMDI factor decomposition model are used to reveal the driving effects of environmental well-being intensity change in Poyang Lake area.Finally,the driving models of environmental well-being intensity change in counties of Poyang Lake area are analyzed.The main research conclusions are as follows:(1)From 2007 to 2020,the level of human well-being in Poyang Lake area continued to improve,the level of environmental pollution showed an overall downward trend,and the environmental well-being intensity decreased significantly.The environmental well-being intensity in the Binhu area and the Around lake area has been declining from 2007 to 2020,and the absolute gap between the two has narrowed.The environmental intensity well-being in the 25 counties in Poyang Lake area has decreased significantly,and the environmental intensity of the three dimensions of wellbeing,namely economic,social and environmental,has decreased significantly.From2007 to 2020,the environmental intensity well-being in Poyang Lake area has obvious spatial agglomeration characteristics.(2)From 2007 to 2020,the overall spatial difference of environmental well-being intensity in Poyang Lake area showed a trend of first shrinking and then expanding.The intra-regional differences in the Binhu area and the Around lake area are the main reasons for the overall spatial differences of environmental well-being intensity in Poyang Lake area.Moreover,the inter-county spatial difference of environmental wellbeing intensity in the Around lake area was larger than the Binhu lake area in most years of the study period.(3)The inter-county spatial difference of environmental well-being intensity in the Yangtze River Basin of Poyang Lake area is greater than that in other basins in Poyang Lake area,and the inter-county spatial difference of environmental well-being intensity in the Xinjiang River basin is the smallest among the seven basins in Poyang Lake area.The differences of environmental well-being intensity among basins in the Around the lake area are greater than those among counties,and the differences between environmental well-being intensity in the Yangtze River basin,Xiuhe River basin and other basins are larger,the differences between environmental well-being intensity in the Raohe River basin and other basins are smaller.(4)From 2007 to 2020,the vast majority of counties in Poyang Lake area have realized the transformation from high intensity type to medium and low intensity type.The lower the original intensity level of environmental well-being intensity in Poyang Lake area is,the greater the probability of maintaining the original state is.The higher the original intensity grade of environmental well-being intensity in a county,the higher the probability of its transition to a low intensity grade.It is difficult for the county environmental intensity well-being in Poyang Lake Region to transition across intensity levels in the short term.(5)From 2007 to 2020,the technological innovation effect has a positive driving effect on the decline of environmental well-being intensity in Poyang Lake area,and the economic well-being effect has a positive effect on the decline of environmental well-being intensity in 2007 to 2010,and a negative effect in 2010 to 2020.The two driving effects jointly promote a continuous decline of environmental well-being intensity in Poyang Lake area.In terms of the driving modes of the decline of environmental well-being intensity at the county level in Poyang Lake area,the singleeffect driving mode is more common than the two-effect driving mode.