Chapter 10 – Effects of Climate Change on China’s Typical Urban Agglomerations and Its Potential Risks

Author(s):  
Na Wei ◽  
Ninglian Wang ◽  
Yu rong zheng

With global warming and rapid urbanization, urban agglomerations over the Loess Plateau (LP) are suffering from various urban disasters. Urbanization has aggravated the decreasing trends of extreme precipitation in Taiyuan and Xi’an urban agglomerations (UAs) and enhanced the increasing trends of extreme precipitation in Luoyang, Hohhot and Xining UAs during 1979–2018. Meanwhile, the number of light rain days decreases in almost all the cities, indicating the sensitivity of light rain days to urbanization. The climate change is a primary contributor to the change of urban precipitation during 1980–2000. However, the urbanization contribution has been increasing gradually since 2000, and the urbanization further amplifies the trend of extreme precipitation caused by the climate change. In terms of the physical mechanisms, the rapid increasing surface temperature and aerosol particles are closely related to the urban precipitation. Our findings provide a systematic understanding of the urbanization effects on the extreme precipitation over the LP and may play an important role in the mitigation of urban disasters.


2019 ◽  
Vol 2 (3) ◽  
pp. 43-47
Author(s):  
V. O. Pepko ◽  
S. V. Zhigalyuk ◽  
R. M. Sachuk

The intensification of the hunting industry leads to an increase in the number of animals and creates conditions for the spread of invasions, incl. helminthic. The transboundary position of the Western regions of Ukraine contributes to the expansion of the species composition and habitats of helminths, which in the current climate change can complicate the epizootic situation of dangerous invasions. On the basis of the literature and the results of our own research, potential risks to the hunting economy for the emergence of new helminthiasis caused by the species-species have been identified. In the work the influence on the helminth fauna of ungulates, kept under conditions in the aviary, modifying and regulating environmental factors, is analyzed. The modern changes in the phenology and ontogeny of pathogens of mass infestations, first of all in geo-helminths, have been investigated. For the causative agent of dictiocaulosis, prolongation of the seasonality of invasion by larvae has been established. It is shown that the decrease in the extent and intensity of invasion of individual trematodes correlates with the dynamics of their intermediate hosts. The data on the effectiveness of remediation with aqueous solutions of polyhexamethyleneguanidine chloride, landing sites were obtained by decontamination of soil in wildlife clusters, in order to minimize their infestation by nematode larvae. The proposed remedy is an organic compound, does not scare away animals, but by contacting organic and inorganic constituents of the soil and lose their potential toxicity. Efficiency of destruction of larvae of Strongylid and Strongylate in the sample ranged from 78 % to 87 %, and in the surface (up to 5 cm) soil layers – 96–100 %. Research findings should be reflected in planned antiparasitic measures.


2020 ◽  
Vol 23 (3) ◽  
pp. 331-340
Author(s):  
Marie-Paule Macdonald ◽  
Sheila Petty

Recently, there has been a surge of African screen media representations of environmental awareness and solutions for sustainable communities as the Global South experiences increasing urban migration and climate change. Much of the focus in this work is on the precarity of daily life for those on the margins of large urban agglomerations. This article brings together theories and practices from the disciplines of urbanism, architecture and documentary cinema studies to examine some examples of how African artists are bringing attention to issues of urban precarity, climate change, survival and growth on the continent.


2016 ◽  
Vol 03 (03) ◽  
pp. 1650012 ◽  
Author(s):  
Mark Pelling ◽  
Thomas Abeling ◽  
Matthias Garschagen

Climate change adaptation coevolves with urban development trajectories presenting decision-makers with a choice of positioning adaptation to protect or revise development. This relational view of adaptation in the context of large cities opens questions on the ways in which city and other actors interact. This interaction may be as or more important than resource and information access for shaping the adaptive capacity and direction of such assemblages. Transitions between modes of adaptation are little understood and will likely combine autonomous and deliberate change both incremental and transformative. Using London as a case study, the paper identifies the contemporary adaptation regime to extreme events and its lines of movement. Interviews and a scenario workshop with resilience planners and emergency managers show the orientation of London’s adaptation is firmly positioned in a mode of resilience, protecting development through flexibility. Maintaining resilience to extremes under conditions of economic austerity is seen to result in the shifting of risk management burdens onto those at risk. Self-reliance is emerging as a mechanism for deepening the resilience mode of adaptation. At the same time, when considering potential risks for extreme events in 2035, most planners express a desire for more transformative adaptation that can tackle root causes in social conditions. A gap is revealed between the professional judgment of risk and resilience planning needs and likely trajectories constrained by national administrations and policy.


2021 ◽  
Vol 15 (4) ◽  
pp. 455-461
Author(s):  
Slobodanka Ključanin ◽  
Milan Rezo ◽  
Suada Džebo ◽  
Emina Hadžić

Natural disasters that cause tremendous material harm and threaten human lives, infrastructure, and economic and social activities become more frequent. While most material and human casualties are the effects of sudden and brief natural disasters, it is not possible to disregard long-term disasters, most frequently triggered by climate change. Damage from long-term disasters is quite significant and hampers the sustainability of the economy and life in densely populated cities. Following climate change, it is concluded that special attention should be paid to coastal cities, cities along rivers and the potential risks of possible disasters should be reduced before they materialize. The reduction of disaster risk is an endeavor involving various professional fields, viewpoints, and stakeholders. An integrated approach that brings together all the necessary elements is therefore required. The planning for protection against natural disasters and in the very moments when it occurs, it is necessary to quickly obtain reliable data to coordinate activities in the field well. However, there are problems in the field with the availability, access, and spatial data use. In this sense, the Spatial Data Infrastructure (SDI) can provide an appropriate framework for sharing spatial data through the cooperation of administration, public, and private institutions and citizens.


Author(s):  
Amro Nasr ◽  
Ivar Björnsson ◽  
Oskar Larsson Ivanov ◽  
Jonas Johansson ◽  
Erik Kjellström

<p>Climate change and its impacts on infrastructures may seriously affect the functionality of societies. Despite the alarming potential consequences climate change pose, not enough effort has been directed towards averting these impacts or managing them in some other way (e.g. mitigation, reduction, etc.). Well-functioning infrastructure networks play a key role in societies’ resilience and their ability to cope with climate-induced hazards. Therefore, ensuring the efficient performance of infrastructure networks, even during climate related emergencies, is central to the resilience of societies in the face of climate change. At the heart of a resilient transportation infrastructure network lays robust bridge structures. This paper builds on previous work where the potential risks from climate change on bridges were surveyed. Here, a qualitative risk prioritization scheme for bridges to rank these risks is presented. The aim of this work is hence to provide a tool for determining which of these risks are more worthy of closer investigation. The suggested framework is based on the basic elements of risk; i.e. hazard, exposure, vulnerability, and consequences. Several indices reflecting these four components and their different characteristics are introduced. Subsequently, a method for ranking the different risks based on these indices is presented. This framework can be used to optimize investments in adapting bridges to climate change.</p>


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