Emergy-based sustainability assessment of forest ecosystem with the aid of mountain eco-hydrological model in Huanjiang County, China
作者： Chesheng Zhan , Ruxin Zhao , Shi Hu
DOI: 10.1016/J.JCLEPRO.2019.119638
关键词:
摘要: Abstract Comprehensive recognition and evaluation of ecosystem development are fundamental for sustainable decision-making nature conservation. Using Huanjiang Maonan Autonomous (also named Huanjiang) County-a typical karst mountainous region as example, by coupling the emergy analysis mountain eco-hydrological model (MECH), most suitable vegetation coverages forest obtained in different economic levels. The results showed that renewable resources (R), non-renewable (N) feedback input (EFI) accounted about 69.8%, 12.7%, 17.5% total (U) respectively from 2000 to 2015. Even though maintained developing tendency; decrease ratio (R) resulted self-support (ESR), yield (EYR) sustainability index (ESI), which may threaten system sustainability. increase coverage reduced soil loss runoff, increased input. As results, renewability (R/U) investment (EIR) presented an trend, while environment loading (ELR) a tendency decrease. will reach optimal state when 30%, 20%, 10% if GDP value county future those 10th, 11th, 12th Five-year Plan China . Coupling provides new approach understand harmonious between human beings.
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