The study of the response regularity of photosynthesis to flash drought in different vegetation ecosystems of the middle and lower reaches of the Yangtze River Basin.

Summary: Imagine a drought that strikes with the speed and intensity of a flash flood. These "flash droughts" are becoming longer and more damaging in China’s Yangtze River Basin. Scientists spent 24 years analyzing how different plants react to these sudden dry spells using advanced solar fluorescence technology. The verdict? While forests face these droughts more often, they are tougher and react slowly. Farm crops, however, are highly sensitive; they show stress signs within just 8 to 16 days, whereas trees hold out for nearly three weeks. This means farmers have a very narrow window to irrigate and save their harvest when a flash drought hits.