量化煤炭发电造成的空气污染对印度农作物生产率的影响
Kirat Singh1, David B Lobell2,3, Inês M L Azevedo4,5,6,7,8
1Emmett Interdisciplinary Program in Environment and Resources, Stanford University, Stanford, CA 94305.
概括
由于二氧化 (NO2) 污染,印度的煤电厂显著降低了大米和小麦的产量,在某些地区造成超过10%的损失. 这些作物损害对于排放法规的健康影响而言至关重要.
科学领域:
- 环境科学 环境科学
- 农业科学 农业科学
- 公共卫生 公共卫生
背景情况:
- 煤炭发电造成的空气污染是印度空气质量差的主要原因之一.
- 虽然对健康的影响得到了充分的研究,但对煤炭污染对作物损害的定量评估缺乏.
研究的目的:
- 估计印度因燃煤发电厂的二氧化 (NO2) 排放造成的作物损失 (大米和小麦).
- 为了比较作物损害的强度与每单位发电的死亡损害.
主要方法:
- 采用回归模型,将电站级发电,风向和卫星测量的NO2结合起来.
- 评估了NO2暴露与大米和小麦作物生产率之间的关联.
- 分析了受影响地区如西孟加拉邦,中邦和北方邦的收益损失.
主要成果:
- 与煤炭相关的NO2排放导致严重暴露地区的年产损失超过10%,相当于6年的平均产量增长 (2011-2020年).
- 在许多发电厂,作物损害强度 (每千瓦时) 经常高于米和小麦的死亡损害强度.
- 造成最严重作物损失的站与死亡影响最高的站有所不同.
结论:
- 考虑到作物损失以及健康影响对于有效监管印度的煤电排放至关重要.
- 在作物收益和死亡率降低方面共同优化减排可以改变社会利益的分配.
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