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气候风险实现和生态恶化对西班牙马门诺 (Mar Menor) 的房价的影响
Matías Lamas Rodríguez1, Mari Luz Garcia Lorenzo2, Manuel Medina Magro3
1Banco de España, Madrid, Spain.
Scientific reports
|July 21, 2023
概括
气候变化引发的极端天气导致有害的藻类繁殖 (HAB). 在Mar Menor,一个主要的HAB事件导致住房投资回报率下降了43%,成本超过40亿欧元.
科学领域:
- 环境科学 环境科学
- 气候变化研究 气候变化研究
- 生态系统经济学 生态系统经济学
背景情况:
- 极端气候事件和相关的降雨/洪水增加了营养物流入水体的流量.
- 这种营养丰富会引发有害的藻类繁殖 (HAB),特别是在脆弱的生态系统中.
- 欧洲最大的盐水湖Mar Menor是一个脆弱的生态系统,容易受到这种退化.
研究的目的:
- 分析马尔·门诺湖中特定有害藻类繁殖 (HAB) 事件造成的重大经济损害.
- 量化感知到的环境退化对当地住房投资回报的影响.
- 将生态恶化的经济后果与全球气候变化事件联系起来.
主要方法:
- 分析与马尔·门诺地区住房投资回报相关的经济数据.
- 对HAB事件影响地区的投资回报与相似不受影响的邻近地区的投资回报的比较.
- 评估2015年HAB事件后住房财富的经济损失.
主要成果:
- 在2015年HAB事件发生6年后,马门诺周边地区的住房投资回报率比相似邻近地区低43%.
- 这导致房屋财富损失超过4000万欧元.
- 来自HAB事件的经济损失大约是从干耕转向灌作物的经济收益的十倍.
结论:
- 由于气候变化而加剧的生态恶化,具有严重和可量化的经济影响.
- 有害的藻类繁殖可以大幅降低房地产价值,并影响当地经济.
- 保护像Mar Menor这样脆弱的生态系统对于减轻气候变化相关的经济损害至关重要.
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