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Construction and case study of rural environmental value-added evaluation system based on emergy theory
- Ajun Wan, Runqiu Tu, Weidong Yue, Yixuan Liu, Yunpeng Wu
- Environment, development and sustainability 2021 v.23 no.3 pp. 4715-4734
- case studies, emergy, environment, environmental protection, industrialization, industry, quantitative analysis, rural areas, value added, villages, China
- At the same time as the rapid development of developing countries, unreasonable conventional planning and industrialization have led to instability in rural areas, especially resource-based rural systems. Rural environment and planning continue to receive widespread attention. Based on the emergy analysis theory, this paper constructed a rural environmental value-added evaluation system with resource, development, space and environmental protection as the factor layer (including 18 sub-indicators). Based on this system, the value-added situation of the socio-economic-natural composite ecological environment of Queshan Village in Shanxi Province from 2010 to 2015 was quantitatively evaluated, and the development strategy was proposed. It was found that from 2010 to 2015, the resource element decreased from 0.17 to about 0.00, the development factor decreased from 0.16 to 0.06, the space factor increased by 0.19 from 0.07, the environmental protection factor decreased from 0.21 to 0.05, and the composite index decreased from 0.61 to 0.30. It showed that the ecological environment growth of Queshan Village was negative in the evaluation period, and the development showed an imbalance law and an unsustainable development trend. According to the analysis results, this paper put forward development opinions from four aspects: resources, industry, environment and government investment. This method constructs a quantitative analysis system for rural environmental value-added evaluation, and has certain theoretical and practical value in rural planning guidance and evaluation.