Energy Pattern Analysis of a Wastewater Treatment Plant

Abstract

Urban ecosystem health assessments can be applied extensively in urban management to evaluate the status quo of the urban ecosystem, identify the limiting factors, identify key problems, optimize the scheme and guide ecological regulation. Regarding the multi-layer roles of urban ecosystems, urban ecosystem health should be assessed at different scales with each assessment providing a specific reference to urban management from its own viewpoint. Therefore, a novel framework of multi-scale urban ecosystem health assessment is established on global, national, regional and local scales. A demonstration of the framework is shown by using a case study in Guangzhou City, China, where urban ecosystem health assessment is conducted in the order of global, national, regional, and local scales, from macro to micro, and rough to detailed analysis. The new multi-scale framework can be utilized to generate a more comprehensive understanding of urban ecosystem health, more accurate orientation of urban development, and more feasible regulation and management programs when compared with the traditional urban ecosystem health assessment focusing at the local scale.

Ecosystem Health Assessment at County-Scale Using the Pressure-State-Response Framework on the Loess Plateau, China

“…A number of models and a series of indicators were proposed and used for the assessment of ecosystem health conditions, but each model is only a major organizing paradigm for the assessment of ecosystem health conditions, and each ecosystem has its own indicators reflecting different aspects of its health status [ 6 , 32 , 33 , 34 , 35 ]. For example, Tang et al (2015) used physical stressors, chemical stressors, community structure metrics and ecosystem-level eco-exergy indicators to construct an index system for assessing coastal ecosystem health [ 6 ].…”

An integrated approach for assessing the urban ecosystem health of megacities in China

“…The third group considers the urban ecosystem as an integration of the natural and artificial environment whose health is largely reflected in its supply of eco-services to humans as well as its ability to maintain their health (Xu & Xie, 2012). In this group, more holistic frameworks including the vigor, structure, function, and resilience of the urban ecosystem are proposed, which also highlight their spatiotemporal and multi-scale features (Su et al, 2012b). In fact, these proposed approaches have already been applied to typical cities such as Beijing, Shanghai, and Guangzhou as well as urban clusters such as the Pearl River Delta and Yangzi River Delta in China to diagnose the comprehensive health status and to determine the limiting factors of the urban ecosystem Su et al, 2013;Zhao & Chai, 2015).…”