2010年1月至2021年3月斯里兰卡进口需求弹性及2019冠状病毒病大流行期间弹性变化

Medha Kumari, Janaka Maheepala, K. Koswatte, Sachira Perera
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摘要

估计了内战后至2021年3月期间斯里兰卡进口需求弹性以及2019冠状病毒病大流行期间的变化。(相对)价格弹性、(生产)活动弹性和汇率弹性分别使用普通最小二乘(OLS)技术(含和不含假人)、自回归分布滞后(ARDL)和误差校正模型)对总量和分类进口进行了估计。我们发现总进口需求的价格弹性是非弹性的。随着燃料从总进口中剔除,弹性略有增加。总进口需求、非食品类消费品、中间产品和投资品的活动弹性在短期内无弹性,在长期内有弹性,而短期弹性在疫情期间有所下降。粮食需求相对于相对价格具有弹性,在疫情期间,汇率和价格弹性有所下降。中间产品与价格和汇率关系不大,但与生产活动有关。我们的研究结果对斯里兰卡货币、汇率、财政和贸易政策的实施具有重要意义。
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Import Demand Elasticities of Sri Lanka from January 2010 to March 2021 and the Change in Elasticities during the COVID-19 Pandemic
Elasticity of demand for imports of Sri Lanka in the post-Civil War period up to March 2021 and the change in them during the COVID-19 pandemic were estimated. (Relative) price elasticity, (production) activity elasticity and exchange rate elasticity were estimated for aggregate and disaggregated imports using Ordinary Least Squares (OLS) techniques with and without dummies, Autoregressive Distributed Lag (ARDL), and Error Correction Modeling. We found that price elasticity of aggregate import demand is inelastic. With the removal of fuel from aggregate imports, elasticities increase marginally. Activity elasticities of aggregate import demand, non-food consumer goods, intermediate goods and investment goods are inelastic over the short run and elastic over the long run while short run elasticity declined during the pandemic. Demand for food is elastic with respect to relative prices and the exchange rate and price elasticity declined during the pandemic. Intermediate goods are not significantly related to prices and exchange rates but are related to production activity. Our results are important for implementation of monetary, exchange-rate, fiscal, and trade policies of Sri Lanka.
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Foreign Direct Investment and Economic Growth Evidence from Sri Lanka Revisiting the Export-led Growth Hypothesis for Liberalised Sri Lanka Budget Deficits and Inflation: The Case of Sri Lanka Import Demand Elasticities of Sri Lanka from January 2010 to March 2021 and the Change in Elasticities during the COVID-19 Pandemic Investigating Growth Performance of Sri Lanka
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