Land Degradation and Development, Год журнала: 2024, Номер unknown

Опубликована: Ноя. 7, 2024

ABSTRACT Abrupt vegetation shifts, defined as an abrupt and irreversible level shift in the intercept (rather than slope) productivity, indicate transitions of unstable ecosystems to alternative states. Understanding these shifts is critical when monitoring ecosystem productivity because they may reveal drivers environmental impacts that differ from gradual changes vegetation. In China's Loess Plateau where sustainable water resource limits are being approached due revegetation, it unclear whether large‐scale have occurred how various affected soil content (SMC). this study, we found approximately 27.9% grasslands 24.8% forests on experienced positive 2000 2020. The results climate zone method multi‐period difference‐in‐differences (MDID) model showed effects SMC vary geographically. Approximately 55.9% 33.9% can wet (0–289 cm) during greening, while 35.7% 37.6% cause drying such events. Positive hydrological responses greening were concentrated with precipitation below 340 mm 520 mm, could be related limitation lower evapotranspiration. Similar also strong evaporative environments temperature, solar radiation, wind speed higher, vapor pressure deficit was lower, which been associated constraints evaporation through greening. This study reveals existence spatial heterogeneity response soils explores possible climate‐regulating mechanisms. used inform development targeted conservation restoration measures areas similar conditions.

Язык: Английский