气候变化领域集成服务门户(CCPortal): Spring phenophases of larch are more sensitive to spring warming than to year-round warming: Results of a seasonally asymmetric warming experiment

CCPortal

DOI	10.1016/j.foreco.2020.118368
	Spring phenophases of larch are more sensitive to spring warming than to year-round warming: Results of a seasonally asymmetric warming experiment
	Yan T.; Song H.; Zeng H.
发表日期	2020
ISSN	0378-1127
卷号	474
英文摘要	Plant phenology is a highly sensitive indicator of climate change. The advancement in time of spring phenology due to climate warming is well documented. However, although the progressive warming process is asymmetrical across seasons in temperate and boreal regions, the consistency of spring phenological response to non-uniform seasonal warming has not been well studied. Furthermore, the different responses of budburst and leaf unfolding to seasonally uneven warming have not been fully explored. We investigated the responses of budburst and leaf unfolding in two-year-old larch (Larix principis-rupprechtii) seedlings to seasonally asymmetric warming treatments (with passive warming applied in open-top chambers) in northern China. We found that spring warming significantly advanced budburst and leaf unfolding by 7 and 2 days, respectively; year-round warming advanced budburst by 4 days but had no impact on the timing of leaf unfolding. Summer and winter warming had no effects on the timing and duration of spring phenophases. Notably, spring leaf unfolding was significantly delayed, by 2 days, following an autumnal warming, i.e., there was a carry-over effect (a 1-day delay in leaf senescence delayed leaf unfolding by 0.3 day in the next spring). The temperature sensitivities of budburst and leaf unfolding in the spring warming treatment (9.56 days/°C and 2.66 days/°C, respectively) were significantly greater than those in the year-round warming treatment (6.43 days/°C and 0.66 days/°C, respectively). We also found a trade-off relationship between the durations of budburst and leaf unfolding in the spring and year-round warming treatments. Our demonstration of (i) differences in the magnitude of responses between budburst and leaf unfolding, and (ii) the carry-over effect under non-uniform seasonal warming, should be incorporated into modeling simulations of spring phenological responses to future warming scenarios. Overall, our findings would have some critical implications for resistance and performance (e.g., frost damage risk and carbon uptake) in the seedling stage of plantation establishment under ongoing climate warming scenarios. © 2020 Elsevier B.V.
关键词	Biology Climate change Economic and social effects Forestry Risk perception Carry-over effects Open top chambers Plantation establishment Seasonal warming Sensitive indicator Temperature sensitivity Trade-off relationship Warming treatments Springs (components)Larix Larix gmelinii var. principis-rupprechtii
语种	英语
来源机构	Forest Ecology and Management
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/132621
推荐引用方式 GB/T 7714	Yan T.,Song H.,Zeng H.. Spring phenophases of larch are more sensitive to spring warming than to year-round warming: Results of a seasonally asymmetric warming experiment[J]. Forest Ecology and Management,2020,474.
APA	Yan T.,Song H.,&Zeng H..(2020).Spring phenophases of larch are more sensitive to spring warming than to year-round warming: Results of a seasonally asymmetric warming experiment.,474.
MLA	Yan T.,et al."Spring phenophases of larch are more sensitive to spring warming than to year-round warming: Results of a seasonally asymmetric warming experiment".474(2020).