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- Title
Compound Dry and Wet Extremes Lead to an Increased Risk of Rice Yield Loss.
- Authors
Chen, Huijiao; Wang, Shuo
- Abstract
Extreme dry and wet events can result in significant crop yield losses. However, the impact of consecutive occurrence of dry and wet extremes on crop yield remains unclear. Here, we investigate the hotspots of compound dry and wet (CDW) extremes across global rice croplands and their impacts on rice yield. We identify a significant increasing trend in the frequency of CDW extremes during 1981–2016. The risk of yield loss caused by CDW extremes can be twice as high as the risk from individual wet and dry extremes. Furthermore, we find that global rice croplands face a 43% higher risk of rice yield loss due to dry‐to‐wet extremes compared to wet‐to‐dry extremes. Our findings provide new insights into the sustainability of global rice production and food security in the face of compound hydrological extremes. Plain Language Summary: It is widely recognized that compound events may exert larger impacts on crop production compared to individual extremes. Here, we investigate the consecutive occurrence of dry and wet (CDW) extremes during the rice‐growing season and estimate their impacts on rice yield. We observe a significant increase in the frequency of CDW extremes across global rice croplands during the rice‐growing season from 1981 to 2016. The CDW extremes exert a larger impact on rice yield loss compared to individual wet and dry extremes. The CDW extremes, characterized by longer durations of both dry and wet extremes and faster transitions between them, have an even more adverse influence on rice yield. The risk of yield loss caused by CDW extremes is 200% higher than the risk from individual wet and dry extremes. Furthermore, global rice croplands face a 43% higher risk of yield loss due to dry‐to‐wet extremes than wet‐to‐dry extremes. Key Points: A significant increasing trend in the frequency of compound dry and wet (CDW) extremes was observed across global rice croplandsThe risk of rice yield loss caused by CDW extremes can be twice as high as the risk from individual wet and dry extremesGlobal rice croplands face a 43% higher risk of rice yield loss caused by dry‐to‐wet extremes compared to wet‐to‐dry extremes
- Subjects
UPLAND rice; AGRICULTURAL productivity; CROP yields; CROP losses; RICE drying; RICE quality; FOOD quality
- Publication
Geophysical Research Letters, 2023, Vol 50, Issue 24, p1
- ISSN
0094-8276
- Publication type
Article
- DOI
10.1029/2023GL105817