万师强教授团队于2023年6月在《Ecological Indicators》上发表最新研究成果:Divergent responses of reproductive phenology to asymmetric warming: Evidence from a 10-year grassland experiment in the Inner Mongolian Steppe。
对称的白天和夜间变暖具有深刻的陆地生态系统植物生长和生态系统碳循环的影响.然而,长期不对称增温对植物物候的影响和物种特异性反应仍不清楚。我们进行了为期十年的控制实验。随着中国北方温带草原的昼夜变暖,研究了六种物种的生殖物候。本物种在两个时间段内对不对称变暖的反应:早期(2006-2009)和后期(2013-2015)。总体而言,夜间变暖使早花物种的结果时间在早期和晚期分别提前了1.2和1.6天。早花物种繁殖持续时间对夜间变暖的响应具有物种特异性。植物物候的这种物种特异性响应对短期和长期变暖的反应差异主要是由于土壤水分差异。研究结果强调了功能性状在调解反应和气候变暖下温带草地植物物候的适应。
本研究比较优势种生殖物候对白天和夜间增温的响应,评价了生殖物候对短期(2006-2009)和长期(2013-2015)增温的响应差异,探索了调节生殖物候对不对称增温差异的原因。
Flowering and fruiting times were advanced of early-blooming species by nighttime warming, but were not significantly affected by daytime warming. Species-specific responses of plant phenology and differences in response to short- vs long-term warming were detected under nighttime warming.