DELINEATING POTENTIAL SITES FOR NATECH DUE TO CLIMATE CHANGE IN THE SELANGOR RIVER BASIN, MALAYSIA
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Abstract Climate change is expected to result in intensifying extreme weather that would increase the risks of climate hazards; leading to natural hazards triggering technological disasters (Natech) events. This paper highlights a simple method using easily available information to identify potential sites for Natech associated with climate change based on a case study of the Selangor River Basin in Malaysia. The approach draws heavily on susceptibility modelling, in combination with screening processes to delineate exposed potential point sources, followed by field inspection to validate the information. Findings reveal that with the onset of climate change, over 55% of the manufacturing industries in the Selangor River Basin are exposed to the risk of Natech due to floods and coastal inundation. The approach can be applied to river basins where industrial activities are prevalent and local information on future climate conditions is limited. It is useful for raising awareness, providing early warning of emerging hazards in worst-case scenarios, and prioritizing climate actions on Natech risk due to climate change.The Water Poverty Index (WPI) is an integrated indicator used for quantitatively assessing the national/regional water scarcity, which takes natural, social, economic and environmental factors into account. In this paper the methodology of WPI is applied to evaluate the water resources status in the main river basins of China. The results show that relative degrees of water scarcity in these main river basins are in the order as: the Liaohe River Basin, the Haihe River Basin, the Huaihe River Basin, the Yellow River Basin, the Songhuajiang River Basin, the Yangtze River Basin and the Pearl River Basin. The WPI pentagrams clearly indicate the causes of water scarcity in these basins. Not only can the WPI illustrate the basic situations of the water resources in these river basins, but also the harmony of the water management with the economic development and environmental protection. This paper also discusses the applicability and possible improvement of the WPI methodology. The WPI offers a simple and effective way for water resources assessment and provides a useful reference for water resources management.
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