ArticleFrontiers in plant science2026
Seasonal ecological quality in China: concurrent and lagged drought responses and dominant factors.
Article in Frontiers in plant science, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Introduction: Global warming is intensifying seasonal droughts and increasing their pressure on terrestrial ecosystems. However, most assessments of drought impacts on ecological quality remain focused on annual-scale or concurrent relationships, with insufficient attention to drought seasonality, lagged effects, and differences along aridity-humidity gradients. Methods: This study constructed spring, summer, and autumn Remote Sensing Ecological Index (RSEI) for China from 2001 to 2022, and analyzed the spatiotemporal variation characteristics of ecological quality at the seasonal scale. Meanwhile, by integrating the Standardized Precipitation Evapotranspiration Index (SPEI), other climatic variables, and human activity data, we investigated the concurrent and lagged effects of seasonal drought on ecological quality, incorporated these effects into the subsequent driving-factor analysis of ecological quality changes, and further compared drought responses and dominant-factor patterns across different dry-wet regions. Results and discussion: The mean RSEI in spring, summer, and autumn all increased significantly, with rates of 0.0032, 0.0017, and 0.0012 yr
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