文档介绍：Emergy-based Urban Ecosystem Health Evaluation:
Evidence from Suzhou, China
JING ZHOU YUANWANG, PEI-KUN GUO, YI-CHEN WANG
State Key Laboratory of Pollution Control & Resources State Key Laboratory of Pollution Control & Resources
Reuse, School of the Environment, Reuse, School of the Environment,
Nanjing University, NJU Nanjing University, NJU
Nanjing, China Nanjing, China
Abstract — Given that the urban area is plex ecosystem considered as a bio-system by seeking to determine the
consisted of natural, societal and economic entities, urban ecological parameters within which ecosystem may be
ecosystem health evaluation is necessary for the scientific humanly occupied without making it dysfunctional[4].
decision-making and proper ecological restoration. In this paper,
Now there are large number of urban ecosystem health
the framework and methodology of urban ecosystem health
evaluation methodologies based on the suitable indices choose
evaluation based on emergy are proposed. The system of indices
in the social life, evaluating the urban ecosystem health by it
is developed including vigor, structure, resilience, ecosystem
structure, circulation, intensity of the material and the energy
service function maintenance, and environmental impact. The
flows inside the system are still few[5]. So there need a new
paper take Suzhou u