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Exploring coupling coordination between urbanization and ecosystem quality （1985-2010）： a case study from Lianyungang City, China

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Frontiers of Earth Science 2016年第3期10卷 527-545页

作者： Junyong AI Lan FENG Xiaowei DONG Xiaodong ZHU Yangfan LI State Key Laboratory of Pollution Control and Resources Reuse School of the Environment Nanjing University Nanjing 210046 China Key Laboratory of Coasial and Wetland ecosystems (Ministry of Education) College of the Environment and Ecology Xiamen University Xiamen 361102 China The Key Laboratory of the Coastal Zone Exploitation and Protection Ministry of Land and Resource Nanjing 210008 China Jiangsu Province Center for Environmental Science and Engineering Nanjing 210036 China

Urbanization processes affect the ecosystem through alterations in ecological functions and landscape patterns. Currently, analysis of the total ecosystem services value （ESV） has targeted the overall benefits which human beings obtain from the regional ecosystem but does not generally include information regarding ecological struc- tures and patterns. Therefore, the results cannot reflect the comprehensive state of the local ecosystem. We propose a new, integrative ecosystem quality indicator based on the ESV and landscape metrics for evaluating the quality of the regional ecosystem. We adopted the method of a coupled degree of coordination for evaluating the interrelationship between urbanization and ecosystem quality in Lianyun- gang City from 1985 to 2010. The coupling degree of coordination between urbanization and ecosystem quality showed an inverse U-shaped curve. At the primary stage of urbanization （1985-1995）, the degree of coupling of urbanization and the ecosystem was just barely balanced. From 1995 until 2000, the coupling system reached a balanced condition, in which the urbanization level increased. Since 2000, the urbanization process has accelerated. The coordination between urbanization and the ecosystem achieved the optimum condition in 2005. A turning point appeared at the same time, and the degree of coupling coordination began falling from the optimum. Subsequently, the coupled system once more entered a barely balanced state. Overall, the comprehensive level of ecosystem quality decreased since 1985 and degraded sharply after 2005, suggesting an overall degradation of the local ecosystem quality.

关键词： urbanization ecosystem services value landuse change landscape metrics ecosystem quality

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New Framework for Evaluating ecosystem quality in Nature Reserves based on Ideal References and Key Indicators

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Journal of Resources and Ecology 2022年第3期13卷 466-475页

作者： WU Zhenliang HOU Jihua XU Li HE Nianpeng School of Ecology and Nature Conservation Beijing Forestry UniversityBeijing 100083China Key Laboratory of ecosystem Network Observation and Modeling Institute of Geographic Sciences and Natural Resources ResearchChinese Academy of SciencesBeijing 100101China College of Resources and Environment University of Chinese Academy of SciencesBeijing 100049China Key Laboratory of Vegetation Ecology of Ministry of Education Northeast Normal UniversityChangchun 130024China

With increasing numbers and types of nature reserves(NRs),objective evaluation and comparison of the effects of different nature NRs on conservation efforts are of great importance for protecting species diversity,ensuring reasonable national economic input,and adjusting government management *** a method for the combined assessment of flagship or umbrella species and ecosystem quality will improve the evaluation of ***,it is also important to establish a new framework for rapid evaluation of ecosystem quality,supported by the advantages of scientific,economic,and regular ***,we proposed a new framework that incorporates the novel concept of ideal references into evaluation systems,which will facilitate the comparison of results from different periods and ***,from the perspective of making the framework as objective,rapid,and economical as possible,we recommended some key ecological indicators,such as net primary productivity,soil organic matter,plant diversity,for use in the new evaluation *** new framework,referred to as“ideal reference and key indicators”(IRKI),can sufficiently meet the requirements for the rapid evaluation of ecosystem quality both regionally and ***,IRKI can identify the restoration potential and restoration periods of NRs,thus facilitating the rational distribution of resources and enhancing the protective *** are many types of NRs in China,and it is necessary to partially alter the assessment methods or parameters for different types of ***,IRKI provides a simple,clear,and comparable framework that will strongly enhance the conservation of protected areas(PAs)and facilitate the standardization of management practices.

关键词： nature reserve ecosystem quality ideal reference key indicators conservation management

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