Climate, Год журнала: 2025, Номер 13(5), С. 83 - 83

Опубликована: Апрель 26, 2025

While highland barley on the Tibetan Plateau is adversely affected by water stress during its growth period, precipitation enhancement could potentially mitigate this issue. Accurate assessment of benefits obtained through crucial for local governments to develop policies sustainable agriculture. To quantify these benefits, WOFOST model was employed evaluate effects under four different scenarios. The demonstrated strong performance, with a Nash–Sutcliffe Efficiency (NSE) 0.93 and root mean square error (RMSE) 3.66. Using calibrated model, yield increases were simulated three meteorological drought conditions classified Standardized Precipitation Evapotranspiration Index (SPEI). results showed that minimal years less rainfall, primarily due lower leaf area index extreme conditions. Additionally, impact nonlinear. An 5% had negligible effects, while enhancements greater than 10% led significant increases. Specifically, reproductive stage resulted in regional 170.7, 325.5, 465.9, 580.5 kg/ha 5%, 10%, 15%, 20%, respectively, surpassing from vegetative stage. This increase attributed barley’s sensitivity at critical stages unique climate Plateau. For Longzi—the largest base production, planting 3440 ha 2024—a an economic benefit CNY 9.8 million. Under change scenarios, decreasing trends yields be effectively offset enhancement, highlighting applicability as effective tool mitigating Tibet. Future studies should integrate crop models weather numerical better address uncertainties.

Язык: Английский