LOCAL COUPLING AND TELECOUPING AND SUSTAINABLE DEVELOPMENT OF AGRICULTURAL ECO-ECONOMIC SYSTEM——A CASE STUDY OF PLATEAU CHARACTERISTI AGRICULTURE IN YUNNAN PROVINCE
With the rapid development of economic globalization and technology,the multi scale flow of material,energy,and information is becoming increasingly evident,which has brought more uncertain impacts on the sustainable development of the agricultural eco-economic system.In order to promote the sustainable development of plateau characteristic agriculture in Yunnan province,the emergy analysis method was used to quantitatively measure the local coupling and telecoupling relationship and sustainable development capacity of the plateau characteristic agricultural eco-economic system from 2000 to 2020,and its spatial pattern evolution characteristics were also analyzed.The research results showed that:(1)From 2000 to 2020,the total energy metabolism(U)of the plateau characteristic agricultural eco-economic system in Yunnan province increased from 2.07×1023 sej to 2.99×1023 sej,and the environmental load rate(ELR)fluctuated from 2.03 to 2.67,indicating that the economic and social benefits of the system steadily improved,while the ecological and environmental benefits continued to decline.(2)The emergy ratio of local and remote elements significantly increased from 0.01 to 0.24,and the emergy exchange rate showed an inverted"U"shaped between 0.03 and 0.11,and this indicated that the system was dominated by local coupling,and it was in a dynamic transition from local coupling to telecoupling;Furthermore,telecoupling mainly relied on energy output,and emergy exchange was always at a loss.(3)The sustainable development index fluctuated from 1.84 to 1.36,and the sustainable development energy index and improved health energy index showed an inverted"U"shaped development trend between 0.26～0.89 and 30.87～104.49,respectively,and this indicated that the sustainable development ability and comprehensive health level of the system were at risk of decline.(4)The plateau characteristic agricultural eco-economic system in Yunnan province formed a gradual spatial pattern of"center interior edge".From the center to the edge,social and economic benefits,ecological pressure,dependence on remote elements,sustainable development ability,and health level were decreasing.Overall,in the past 20 years,the plateau characteristic agriculture in Yunnan province has exhibited an extensive development model that relies excessively on the local ecological environment and resources,and the telecoupling structure is still unreasonable.In order to promote the sustainable development of plateau characteristic agriculture in Yunnan province,modern ecological agriculture needs to be continuously developed,and the"introduced"agricultural development policy needs to be focused on implementing to optimize the telecoupling structure.In addition,based on the characteristics of the agricultural eco-economic system in different regions of Yunnan province,the sustainable development of plateau characteristic agriculture in each region should be classified and promoted according to local conditions.
emergy analysisagricultural eco-economic systemlocal coupling and telecouplingsustainable de-velopmentplateau characteristic agricultureYunnan province
NETL
NSTL
万方数据
