Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1111/gcb.15586 |
Divergent responses of phenology and growth to summer and autumnal warming | |
Tao Yan; Yongshuo Fu; Matteo Campioli; Josep Peñ; uelas; Xuhui Wang | |
2021-03-17 | |
发表期刊 | Global Change Biology |
出版年 | 2021 |
英文摘要 | Plant phenology is highly sensitive to climate change, and shifts in autumnal foliar senescence are critical for plant productivity and nutrient cycling. Global warming has delayed the timing of foliar senescence, but the response of autumnal foliar senescence to nonuniform seasonal warming remains poorly understood, with experimental evidence in trees especially scarce. We therefore conducted a field experiment on seasonally asymmetric warming on 2‐year‐old larch (Larix principis‐rupprechtii) seedlings in two hydrologically contrasting years (wet 2018 and dry 2019). Autumnal and year‐round warming significantly delayed the timing of foliar senescence by 6 and 7 d in 2018, the wet year, with corresponding temperature sensitivities of 6.73 ± 1.47 and 8.26 ± 1.00 d/°C, respectively. Interestingly, the dates of senescence did not change across the warming treatments in 2019, the dry year. However, there was no significant effect of summer warming on the timing of foliar senescence neither in the wet nor dry year. The delayed autumnal foliar senescence was responsible for an increase in biomass only in the wet year, 2018. In contrast, summer warming, but not autumnal warming, increased the mortality of the seedlings in both 2018 and 2019. These results suggest that the hydrological conditions substantially modify the response of autumnal phenology and growth to seasonal warming. Autumnal warming increases growth, whereas summer warming could cause carbon starvation/hydraulic failure, reduce growth, and lead to higher mortality. Our results suggest that the functioning, ecosystem services, and sustainability of forests in the future depend on the strength and pattern of nonuniform seasonal warming. This study can inspire new research in phenology and tree growth in experiments with asymmetric warming. |
领域 | 气候变化 ; 资源环境 |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/319839 |
专题 | 气候变化 资源环境科学 |
推荐引用方式 GB/T 7714 | Tao Yan,Yongshuo Fu,Matteo Campioli,et al. Divergent responses of phenology and growth to summer and autumnal warming[J]. Global Change Biology,2021. |
APA | Tao Yan,Yongshuo Fu,Matteo Campioli,Josep Peñ,uelas,&Xuhui Wang.(2021).Divergent responses of phenology and growth to summer and autumnal warming.Global Change Biology. |
MLA | Tao Yan,et al."Divergent responses of phenology and growth to summer and autumnal warming".Global Change Biology (2021). |
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