Evaluation of Urban Eco-Security—A Case Study of Mianyang City, China

Zhao, Chen; Zhou, Bo; Su, Xin

doi:10.3390/su6042281

Cited by 22 publications

(12 citation statements)

References 35 publications

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“…Therefore, the indicator system involving only the natural system was a lopsided understanding of ecological security [62]. On the other hand, there were a number of similar studies taking population density as one assessment indicator [23,34,[63][64], whereas the authors argued that this indicator failed to present the synthetic pressure of population to noosystem other than the spatial distribution of population [65]. The steppe might be left with no settled population, but it was the place for other activities, such as grazing, which is why it was replaced by the pressure of population on the environment in this study.…”

Section: Discussionmentioning

confidence: 99%

Spatiotemporal Assessment of Ecological Security in a Typical Steppe Ecoregion in Inner Mongolia

Li¹,

Li²,

Wang³

et al. 2018

Pol. J. Environ. Stud.

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Ecological security is the comprehensive characterization of the noosystem's overall collaborative capacity in relation to human welfare within a whole society. Recent years, however, have witnessed the excessive exploitation of natural resources via anthropogenic activities that have consistently triggered or accelerated ecological deterioration. In addition, an adequate ecological security assessment has yet to be conducted in a steppe ecoregion, especially when considering that the steppe is the major ecoregion category in China. In this study, we selected a typical steppe ecoregion in Inner Mongolia, northern China, as a representative region to conduct a spatiotemporal assessment of ecological security from both global and local perspectives. Along with an evaluation indicator system constituting 25 separate indicators covering three different systems (society, economy, and nature), we applied an improved grey target decision-making method in the initial indicator conversion process. As it pertains to weight determination, we employed a weight calculation method that weighed all indicators synthetically. Research findings indicated that a progressive deterioration of ecological security has been observed in the typical steppe ecoregion of China from 1990 to 2014, with a decline in the security situation and even more severe deterioration observed from a local perspective than a global perspective. Social and economic systems, specifically an excessive rural population and unreasonable development (mainly grazing and mining), were the major factors that promoted ecological security deterioration, while the natural system has contributed only slightly to this deterioration.

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Section: Discussionmentioning

confidence: 99%

Spatiotemporal Assessment of Ecological Security in a Typical Steppe Ecoregion in Inner Mongolia

Li¹,

Li²,

Wang³

et al. 2018

Pol. J. Environ. Stud.

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“…As highly populated eco-systems, cities always have more fragile ecological environments (Gao et al 2017). Ecological security is regarded as one of the most important national survival strategies (Zhao et al 2014). With the rapid development of China's urbanization process, urban ecosystem has become the important part of ecological security.…”

Section: Introductionmentioning

confidence: 99%

A research on urban eco-security evaluation and analysis: complex system’s brittle structure model

Liu

Zhong-hai

2020

Environ Sci Pollut Res

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Urban ecosystem has become a critical part of ecological security and draws much attention worldwide. It is both a result of natural ecological system development, and also an inevitable outcome of human ecological system development within a certain stage, with the objective of identifying the possible improvement space for unban ecological security evaluation from complex system perspective. Based on the brittle structure model and set pair theory, this paper firstly explored the main research methods of urban ecological security theory and its characteristics, then conducted a theory of complex system brittleness to analyze the urban ecological security brittle factors, brittle primitives, and brittle structure. Furthermore, it conducted a model of urban ecological system brittleness correlation entropy together with a set pair analysis method to discuss its brittleness. And finally, an ecological safety evaluation has been presented based on the empirical case in Chengdu City of China. The theoretical and empirical analysis shows that the brittle correlation entropy of natural subsystem in urban ecological security is the biggest one. The risks from natural subsystem collapse can easily trigger the brittleness of the entire urban system. The corresponding maximum brittle fluctuation entropy is from economic subsystem; it has a largest impact on the entropy change of urban ecosystem. The way of reducing the uncertainty of urban ecological risks is to lower difference degree coefficient in the system. Relevant decision makers should consider to reduce the increasing degree of entropy and eliminate the fluctuation of the brittle factors. Thus, the threats or risks of urban ecological system can be within the acceptable range and under control. An integrated system management combing with brittleness characters of natural, economics, and social subsystem is necessary. It is helpful for the ecological security construction.

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“…Ecological security, as the fundamental guarantee for achieving the sustainable development and promoting public health, has already become a widely used security concept and important research topic because of serious ecological degradation and environmental pollution [ 1 , 2 ]. There is ample evidence that ecosystems in many regions have become highly stressed and dysfunctional for various reasons [ 3 ].…”

Section: Introductionmentioning

confidence: 99%

Integrated Evaluation of Coupling Coordination for Land Use Change and Ecological Security: A Case Study in Wuhan City of Hubei Province, China

Chai

Wang

Zhang

2017

IJERPH

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As land resources and ecosystems provide necessary materials and conditions for human development, land use change and ecological security play increasingly important roles in sustainable development. This study aims to reveal the mutual-influence and interaction between land use change and ecological security in Wuhan, based on the coupling coordination degree model. As such, it provides strategies for the achievement of the synchronous and coordinated development of urbanization and ecological security. The results showed that, during the period from 2006 to 2012, the size of built-up area in Wuhan increased to 26.16%, and that all the other types of land use reduced due to the urbanization process, which appeared to be the main driving force of land use change. The ecological security in Wuhan has been improving as a whole although it was somewhat held back from 2006 to 2008 due to the rapid growth of built-up area. The coupling coordination analysis revealed that the relationship between built-up area and ecological security was more coordinated after 2008. The results can provide feasible recommendations for land use management and environmental protection from the viewpoint of coordinated development. To achieve sustainable development from economic and ecological perspective, policy makers should control the rate of urban expansion and exert more effort on intensive land use, clean energy development and emission reduction.

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Evaluation of Urban Eco-Security—A Case Study of Mianyang City, China

Cited by 22 publications

References 35 publications

Spatiotemporal Assessment of Ecological Security in a Typical Steppe Ecoregion in Inner Mongolia

Spatiotemporal Assessment of Ecological Security in a Typical Steppe Ecoregion in Inner Mongolia

A research on urban eco-security evaluation and analysis: complex system’s brittle structure model

Integrated Evaluation of Coupling Coordination for Land Use Change and Ecological Security: A Case Study in Wuhan City of Hubei Province, China

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