Simulative Study On The Space Coupling Development For Ecology, Economy And Finance In Poyang Lake Area

“System coupling” was originated in physics. After system coupling, thefunction and structure will change. The system coupling effect is the comprehensiveeffect that system structure haremonizes and motivates with the environmental. Sostudy on system coupling effect. In other words, the study on coordination ofcoupling relation is very important to improve the systematic productivity.First of all, in this thesis, the author analyzes the ecological, economic andfinancial coupling system in Poyang Lake Area with system dynamics: dividing thecoupling system into population subsystem, ecological subsystem, economicsubsystem and financial subsystem and establishing the model of coupling systembased on it. With the historical data from2005to2012, the result of2015to2020isforecasted by simulation.Then the author builds the evaluation index system of the ecological, economicand financial coupling system in Poyang Lake Area. Based on simulation data from2015to2020, the author determines the weights with the entropy weight method andcalculates composite index of ecological system, economic system and financialsystem about Poyang Lake Area and its cities. Results show that the composite indexof ecological system and financial system ranks third, and the economic system ranksfirst. In the six cities, the composite index of ecological system about JingDezhen andYingTan are higher than others; the composite index of economic system are similarand the first city is NanChang; the composite index of the finacial system aboutNanChang is0.88that is much higher than others’. Based on it, the author analyzesthe relationship of ecological, economic and financial system in Poyang Lake withmethod of grey correlation degree. The author regards the economic system as thereference sequence and calculates the result that the correlation of ecological systemin Poyang Lake Area is0.3844and finance’s is0.8519. It shows that the area’seconomy is mainly affected by finance. The reason is that only the correlationcoefficient of ecological system in YingTan is higher than the correlation coefficient of financial system, but other five cities are on the contrary.Then the author calculates coupling degree and the coupling coordination degreeamong the ecological, economic and financial system in Poyang Lake Area and its sixcities from2015to2020with the model of coupling degree and the model ofcoupling coordination degree. Based on the classification standard of couplingcoordination degree, the coupling system in Poyang Lake Area is on the stage ofdisorder; NanChang is mild disorder in2018and2019and is on the stage of disorderin the other years; YingTan and JingDezhen jump to the stage of disorder from milddisorder; XinYu and FuZhou are on the stage of mild disorder and JiuJiang ismoderate disorder in2016,2017and2018and it is disorder in other times.Finally, according on the results above, the author puts forward somesuggestions about the spatial coupling development mode for ecological, economicand financial system in Poyang Lake Area. Suggestions are those: the couplingdevelopment mode of “ecological system pluses economic system” in NanChang andXinYu; the coupling development mode of “financial system pluses economicsystem” in JingDezhen and YingTan; the coupling development mode of “ecologicalsystem, financial system plus economic system”.