Groundwater Risk Sources Identification and Risk Reduction Management in the Song-Liao-River-Basin

Author(s):  
Erik Nixdorf ◽  
Yuanyuan Sun ◽  
Jing Su ◽  
Qiang Wang ◽  
Tong Wang ◽  
...  
2010 ◽  
pp. 265-277 ◽  
Author(s):  
Mohammad Alawamleh ◽  
Keith Popplewell

2014 ◽  
Vol 886 ◽  
pp. 236-239
Author(s):  
Pan Fei Wang ◽  
Jia Jun He ◽  
Xue Wang ◽  
Xuan Guo ◽  
Ming Wei Song

Potential cancer risk to human beings caused by Cd, in Pearl River Basin was investigated based on the USEPA guidelines for carcinogen risk assessment. The risk sources, exposure media and pathways, as well as the risk contribution from each component, were analyzed through the multi-media/multi-pathway human exposure model, Results showed that the daily exposure doses of Cd of residents in Pearl River Basin were 2.36×10-4 mg/(kg·d), which was englobed mainly by oral intake. The total cancer risk was 8.99×10-5 that was higher than the acceptable cancer risk level (1×10-6). Rice and vegetables were the major exposure media.


2021 ◽  
Author(s):  
Roquia Salam ◽  
Bonosri Ghose ◽  
Badhon Kumar Shill ◽  
Md. Aminul Islam ◽  
Abu Reza Md. Towfiqul Islam ◽  
...  

AbstractDisaster risk perception and risk appraisal are essential in formulating an appropriate disaster risk reduction policy. This study examines the actual vs perceived drought risks by constructing risk indices at the household and expert levels using survey data from the lower Teesta River Basin in northern Bangladesh. The survey data were collected from 450 farmers using a structured questionnaire conducted between August and September 2019. A composite drought risk index was developed to understand households’ perceived and actual risks in the designated areas. The results show that the actual and perceived risk values differ significantly among the three case study sites locally known as Ganai, Ismail, and Par Sekh Sundar. The risk levels also differ significantly across the households’ gender, income, occupation, and educational attainment. People with insolvent socioeconomic status are more prone to drought risk compared to others. Results also reveal that the mean level of perceived risk agrees well with the actual risk, whereas females perceive comparatively higher risk than their male counterparts. Expert views on drought risk are similar to the individual household level perceived risk. The outcomes of this study would assist the policymakers and disaster managers to understand the concrete risk scenarios and take timely disaster risk reduction actions for ensuring a drought-resistant society.


2021 ◽  
Vol 9 ◽  
Author(s):  
Anna Scaini ◽  
Ana Stritih ◽  
Constance Brouillet ◽  
Chiara Scaini

Involving citizens in river and flood risk management is critical for risk reduction and sustainable development within river basins, but local community input is often limited. This is partly due to the difficulty of quantifying the perceived values and risks related to the rivers, because these are based on personal knowledge and opinions. There is a need for more data on locals’ opinions and how they are spatially distributed across the river basin. Studies analyzing how perceived risks match evidence-based data can be a first step to including local knowledge in the decision-making process and pose the basis to enhance preparedness. Here, we present a blueprint questionnaire to characterize the perception of flood risk and its spatial distribution across the river basin. Respondents are asked their perception of the role of the river in terms of flood risk and management, as well as to pinpoint on a map the areas they identify as the most dangerous during floods. The approach is tested on the Tagliamento River in the Italian Alps, characterized by debates regarding flood protection, flood management and ecological conservation. The flood risk perception map shows good agreement between perceived risk and existing flood risk assessment maps in the lower basin, where major floods happened in recent memory (1966). In the upper basin, despite having suffered frequent floods, participants are more uncertain about the risks. There is interest in being involved in the risk management debate, and most respondents believe that risk reduction and river conservation are compatible. Land use planning is identified as a factor that can increase flood risk. The results point to the necessity to tackle together conservation, risk management and land use planning in order to develop risk-oriented river management strategies. Our study demonstrates how online participatory mapping can be used to improve the understanding of citizens’ perceptions and expectations with regards to their river, and support participation in sustainable river management.


2021 ◽  
Author(s):  
Roquia Salam ◽  
Bonosri Ghose ◽  
Badhon Kumar Shill ◽  
Md. Aminul Islam ◽  
A R M Towfiqul Islam ◽  
...  

Abstract Disaster risk perception, as well as risk appraisal, play a pivotal role in making the disaster risk reduction policy. This study examines the actual vs perceived drought risks by constructing risk indices at the household and expert levels using survey data from the lower Teesta River Basin in northern Bangladesh. Survey data were collected from 450 farmers based on the structural questionnaire. A composite drought risk index was developed to understand households’ perceived and actual risks in the designated areas. The results show that the actual and perceived risk values differ significantly among the three designated sites of Ganai, Ismail, and Par Sekh Sundar. The risk levels also differ significantly across the household’s gender, income, occupation, and educational attainment. People with poor socio-economic status are more prone to drought risk than others. Results also reveal that the mean level of perceived risk agrees well with the actual risk; females perceive comparatively higher risk than males. Expert views on drought risk are similar to the individual household level perceived risk. The outcomes of this study would help the policy-makers and disaster managers to understand the concrete risk scenarios of the study areas and to take timely and appropriate disaster risk reduction actions for ensuring a drought-resistant society.


2021 ◽  
Author(s):  
Lorina Schudel ◽  
Yvonne Walz ◽  
Kokouvi Gbétey Akpamou

<p>Floods in West Africa repeatedly cause devastating impacts on human life and livelihoods, infrastructure and the environment and they are expected to increase in frequency and severity under a changing climate. Ecosystem-based approaches can be a cost-effective, efficient way to reduce flood risk while at the same time providing co-benefits. However, qualitative and quantitative assessments of ecosystem-based approaches that are suitable for the climatic conditions and socio-ecological system of the region are scarse. This study therefore identifies and evaluates climate-sensitive ecosystem-based approaches for the transboundary Lower Mono River Basin in Benin and Togo. The identification of ecosystem-based approaches has been done based on a review of scientific literature and complemented by a participatory approach with experts from the catchment. During focus group discussions, national stakeholders and policy makers identified, prioritized and mapped existing measures and provided their perspectives on prospective measures to reduce flood risk in the transboundary catchment. They include measures to reduce flow velocity, increase soil infiltration and improve water management. In a next step, we used a multi-criteria analysis considering ecological, climatic and flood hazard data to create suitability maps for different clusters of identified ecosystem-based approaches. This study is part of the CLIMAFRI project, which aims at creating a river basin information system for the Lower Mono Basin as well as creating a flood risk management plan. Through the integration of the suitability maps into the flood risk assessment tool, which has been created in the scope of this project, the ecosystem-based approaches are evaluated quantitatively. In a second round of focus group discussions with representatives from the local communities, feasibility of selected ecosystem-based approaches, co-benefits and trade-offs of the measures are discussed. Through the combination of qualitative and quantitative data, a holistic evaluation of ecosystem-based approaches and their contribution to hazard mitigation, increase of coping capacity, ecosystem resilience and overall flood risk reduction can be achieved.</p>


Geosciences ◽  
2018 ◽  
Vol 8 (10) ◽  
pp. 371 ◽  
Author(s):  
Adrian Schmid-Breton ◽  
Gesa Kutschera ◽  
Ton Botterhuis ◽  
The ICPR Expert Group ‘Flood Risk Analysis’ (EG HIRI)

To determine the effects of measures on flood risk, the International Commission for the Protection of the Rhine (ICPR), supported by the engineering consultant HKV has developed a method and a GIS-tool named “ICPR FloRiAn (Flood Risk Analysis)”, which enables the broad-scale assessment of the effectiveness of flood risk management measures on the Rhine, but could be also applied to other rivers. The tool uses flood hazard maps and associated recurrence periods for an overall damage and risk assessment for four receptors: human health, environment, culture heritage, and economic activity. For each receptor, a method is designed to calculate the impact of flooding and the effect of measures. The tool consists of three interacting modules: damage assessment, risk assessment, and measures. Calculations using this tool show that the flood risk reduction target defined in the Action Plan on Floods of the ICPR in 1998 could be achieved with the measures already taken and those planned until 2030. Upon request, the ICPR will provide this tool and the method to other river basin organizations, national authorities, or scientific institutions. This article presents the method and GIS-tool developed by the ICPR as well as first calculation results.


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