| Gross Ecosystem Product(GEP)is an effective tool to evaluate ecosystem resources and benefits,which can reflect the sustainable development potential of regional ecosystem.Taking the total value of ecological products as a measure to assess the state of ecosystems and guide local green development is an effective way to transform "clean waters and lush mountains" into "gold and silver mountains".This thesis takes southern Jiangxi Province as the research object,firstly calculates the total value of ecological products in 2010,2015 and 2020 from three aspects: material supply value,regulatory service value and cultural service value,and analyzes the spatio-temporal evolution characteristics.Secondly,the coupling coordination relationship between the total value of ecological products and regional economy is analyzed from the coupling degree,coupling coordination degree and development degree.Finally,some suggestions are put forward to promote the coordinated development of GEP and regional economy.The main conclusions are as follows.(1)First,from the perspective of time evolution,during 2010—2020,the total value of ecological products in southern Jiangxi increased from 1,666.769 billion yuan in 2010 to1,799.073 billion yuan in 2015 and then decreased to 1,718.432 billion yuan,showing a trend of first rising and then declining,with the actual increase of 51,663 billion yuan in 10 years.The actual increase was 3.10%.Among different regulation service types,the value of climate regulation is the highest,accounting for 61.57%,58.68% and 68.20% of the regulation service value in the three accounting years,respectively.Among different ecosystem types,forest ecosystem had the highest value,accounting for 66.92%,67.54% and 64.07% of GEP in the three accounting years,respectively.Second,from the perspective of spatial evolution characteristics,in 2010,the high GEP area per unit area was distributed in the northeast and southeast of southern Jiangxi,while the low GEP area was mainly distributed in the west.In2015,the high GEP area per unit area in southern Jiangxi was distributed in the north,and the GEP area per unit area in western Jiangxi was increased.In 2020,the high GEP per unit area was distributed in the north and southwest of southern Jiangxi,but the GEP per unit area decreased significantly in the north during 2010—2020.(2)First,from the perspective of coupling degree,the mean coupling degree increased from 0.690 in 2010 to 0.801 in 2020.Except for the slight decrease of coupling degree in Zhanggong District,Longnan City,Dingnan County and Chonnam County,the remaining 14 counties and districts all had varying degrees of increase of coupling degree,indicating that the connection between GEP and regional economic system was increasingly strengthened in the past decade.And presents the trend of orderly development.Secondly,from the perspective of coupling coordination degree,the overall coupling coordination degree between the total value of ecological products and regional economic development in southern Jiangxi region increased from 2010 to 2020.The average level of coupling coordination degree increased from 0.403 in2010 to 0.472 in 2020,and the main coupling types tended to be slightly disordered and on the verge of disordered and barely coordinated.It indicates that GEP and regional economy are gradually forming a benign interactive relationship.Thirdly,from the perspective of relative development degree,the relative development degree of southern Jiangxi showed a downward trend during 2010—2020,with the average relative development degree declining from 10.970 in 2010 to 10.780 in 2015 and then to 3.170 in 2020.The main types of relative development degree developed from economic lag to ecological lag.This indicates that although the coupling coordination degree in southern Jiangxi is on the rise,the growth rate of ecological value is lower than that of economic value in recent years,and GEP and economic system do not develop synchronously.Based on the above conclusions,this thesis puts forward the following three suggestions:(1)Introduce the GEP to achieve scientific ecological evaluation;(2)Take measures to increase the GEP and accelerate the realization of the value of ecological products;(3)Simultaneous development and protection,and coordinated development of ecology and economy. |
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