干旱化
荒漠化
干旱指数
蒸散量
干旱
环境科学
生产力
农业
水资源管理
降水
水文学(农业)
农林复合经营
地理
经济
生态学
气象学
生物
岩土工程
宏观经济学
考古
工程类
作者
Maurizio Malpede,Marco Percoco
出处
期刊:European Review of Agricultural Economics
[Oxford University Press]
日期:2023-04-07
卷期号:50 (3): 978-1012
摘要
Abstract The economic effects of global warming have gained considerable attention in the recent economic literature. While the relationship between rainfall and agriculture is well known, precipitations alone do not capture the soil water availability, which depends on the evaporation of the water (potential evapotranspiration [PET]). This paper presents evidence of the relationship between aridification and agricultural productivity. We show that areas that have experienced increased precipitations have become arider due to increased PET. We then project future aridification patterns. We find that the global arid area will increase by 3.9 per cent by 2040. This implies a global loss of about 20 million tons of maize, 19 million tons of rice, 8 million tons of soybeans and 21 million tons of wheat until 2040 if no action to combat desertification is taken.
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