Haowei Ni, Han Hu, Constantin M. Zohner, Weigen Huang, Ji Chen, Yishen Sun, Jixian Ding, Jizhong Zhou, Xiaoyuan Yan, Jiabao Zhang, Yuting Liang, Thomas W. Crowther
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引用次数: 0
摘要
全球变暖对农业生态系统构成了前所未有的威胁。虽然冬季气温上升比其他季节更为明显,但冬季变暖对作物生物质碳的影响尚未得到阐明。在这里,我们将全球观测数据与长达十年的田间试验相结合,发现冬季土壤温度与作物生物质碳之间存在显著的负相关。冬季土壤温度每升高一摄氏度,秸秆和谷物的生物质碳分别减少 6.6 ( ± 1.7) g kg-1 和 10.2 ( ± 2.3) g kg-1。这种减少主要归因于气候变暖导致的土壤有机质和微量营养元素的损失。如果忽视冬季变暖对作物生物质碳的不利影响,在未来气候变暖的情况下,粮食总产量可能会被高估 4% 到 19%。我们的研究强调了将冬季变暖纳入农业生产力模型以制定更有效的气候适应战略的迫切需要。
Effects of winter soil warming on crop biomass carbon loss from organic matter degradation
Global warming poses an unprecedented threat to agroecosystems. Although temperature increases are more pronounced during winter than in other seasons, the impact of winter warming on crop biomass carbon has not been elucidated. Here we integrate global observational data with a decade-long field experiment to uncover a significant negative correlation between winter soil temperature and crop biomass carbon. For every degree Celsius increase in winter soil temperature, straw and grain biomass carbon decreased by 6.6 ( ± 1.7) g kg-1 and 10.2 ( ± 2.3) g kg-1, respectively. This decline is primarily attributed to the loss of soil organic matter and micronutrients induced by warming. Ignoring the adverse effects of winter warming on crop biomass carbon could result in an overestimation of total food production by 4% to 19% under future warming scenarios. Our research highlights the critical need to incorporate winter warming into agricultural productivity models for more effective climate adaptation strategies.
期刊介绍:
Nature Communications, an open-access journal, publishes high-quality research spanning all areas of the natural sciences. Papers featured in the journal showcase significant advances relevant to specialists in each respective field. With a 2-year impact factor of 16.6 (2022) and a median time of 8 days from submission to the first editorial decision, Nature Communications is committed to rapid dissemination of research findings. As a multidisciplinary journal, it welcomes contributions from biological, health, physical, chemical, Earth, social, mathematical, applied, and engineering sciences, aiming to highlight important breakthroughs within each domain.