Root-Zone Moisture Realized During a Compound Dry–Hot Event, Not Irrigation Persistence, Determines the Resilience of Cropland Carbon–Water Productivity in the Guanzhong Plain, China
Warming is making drought and heat co-occur more often, intensifying compound stress on cropland in northern China’s drylands, where water scarcity makes further irrigation expansion untenable. On the Guanzhong Plain, a major grain-producing region, it remains unclear which irrigation conditions buffer cropland carbon–...