Applicability Analysis for Various Emission Trading Offset Ratios
|關鍵字:||排放交易;抵換係數;適用性分析;emission trade;offset ratio;applicability analysis|
Air pollution emission trading (APET) is an economic incentive program that can effectively promote pollution reduction and technology advance. An offset ratio can be applied to reduce significant environmental and health impacts caused by inappropriate pollution load redistribution after implementing an APET program. Although an offset ratio determined based on the distances among emission sources was previously reported, population, ambient air quality and exposure risk were not considered. This study was thus initiated to explore and propose various offset ratio functions based on the distance and three essential factors of population density, ambient pollutant concentration, and exposure risk for reducing environmental and health risks after applying an APET program. The population density based function is proposed to avoid emission permits being transferred into highly populated areas. The ambient pollutant concentration based function is intended to avoid the occurrence of excessively high concentration areas due to cumulative impacts. And the exposure risk based function is used to avoid high human exposure for reducing health risk. An APET simulation model was established to implement several hypothetical case studies and to evaluate the applicability of each offset ratio function. As demonstrated by the results obtained for the illustrative cases, different offset ratio functions are applicable for different pollution source and population distributions. Carefully assessing the patterns of pollution source and population distributions is essential for selecting an appropriate offset function to improve air quality and decrease exposure risk.
|Appears in Collections:||Thesis|
Files in This Item: