气候变化领域集成服务门户(CCPortal): Nutrient availability alters the correlation between spring leaf-out and autumn leaf senescence dates

CCPortal

DOI	10.1093/treephys/tpz041
	Nutrient availability alters the correlation between spring leaf-out and autumn leaf senescence dates
	Fu, Yongshuo H.; Piao, Shilong; Delpierre, Nicolas; Hao, Fanghua; Hanninen, Heikki; Geng, Xiaojun; Penuelas, Josep; Zhang, Xuan; Janssens, Ivan A.; Campioli, Matteo
通讯作者	Fu, YSH (通讯作者)
发表日期	2019
ISSN	0829-318X
EISSN	1758-4469
起始页码	1277
结束页码	1284
卷号	39 期号:8
英文摘要	Leaf senescence (LS) affects tree fitness, species distribution and ecosystem structure and functioning. The drivers of LS and the processes underlying it have been studied, but the studies have mainly focused on environmental cues and have mainly been based on statistical analyses using in situ data sets. Experimental investigation and field verification of the processes and drivers are thus urgently needed. We conducted a nutrient-addition experiment after a spring-warming experiment in which an similar to 40-day range of leaf-out (LO) dates was induced in horse chestnut (Aesculus hippocastanum) and beech (Fagus sylvatica) saplings. We found that both increased nutrient supply and advanced LO date significantly affected the timing of LS, but their effects were opposite, as the former delayed and the latter advanced the senescence. The effects of nutrient supply and LO interacted species specifically. In chestnut, the delay of senescence caused by fertilization increased with the delay of LO and was thus stronger for individuals that flushed late in the spring. On the contrary, in beech the delay of senescence caused by fertilization decreased with the delay of LO and was insignificant for individuals with the latest LO. The experimental findings for beech were confirmed with mature trees at a regional scale. The interactive effect between nutrients and LO on senescence may be associated with variable sensitivity to photoperiod, growth sink limitation and/or direct effect of foliar nutrition on the timing of senescence. Our novel results show that the interactive effects of LO and nutrient supply on the timing of LS should be further addressed experimentally in forthcoming studies. It would also be interesting to consider our results in the further development of phenological models used in assessing the effects of climatic change. The differences found in the present study between horse chestnut and beech suggest that the results found for one species cannot necessarily be generalized to other species, so studies with different temperate tree species are called for.
关键词	CLIMATE-CHANGE NORTHERN-HEMISPHERE PHENOLOGY RESPONSES TEMPERATURE TREES NITROGEN GROWTH VARIABILITY PERFORMANCE
英文关键词	climate change; fertilization; leaf senescence; legacy effect; spring leaf out
语种	英语
WOS研究方向	Forestry
WOS类目	Forestry
WOS记录号	WOS:000493055600002
来源期刊	TREE PHYSIOLOGY
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/259650
推荐引用方式 GB/T 7714	Fu, Yongshuo H.,Piao, Shilong,Delpierre, Nicolas,et al. Nutrient availability alters the correlation between spring leaf-out and autumn leaf senescence dates[J]. 中国科学院青藏高原研究所,2019,39(8).
APA	Fu, Yongshuo H..,Piao, Shilong.,Delpierre, Nicolas.,Hao, Fanghua.,Hanninen, Heikki.,...&Campioli, Matteo.(2019).Nutrient availability alters the correlation between spring leaf-out and autumn leaf senescence dates.TREE PHYSIOLOGY,39(8).
MLA	Fu, Yongshuo H.,et al."Nutrient availability alters the correlation between spring leaf-out and autumn leaf senescence dates".TREE PHYSIOLOGY 39.8(2019).