Divergent changes of the elevational synchronicity in vegetation spring phenology in North China from 2001 to 2017 in connection with variations in chilling

doi:10.1002/joc.7170

	Divergent changes of the elevational synchronicity in vegetation spring phenology in North China from 2001 to 2017 in connection with variations in chilling
	Dai, Junhu 2,3,4; Zhu, Mengyao 2,3; Mao, Wei 1; Liu, Ronggao 2; Wang, Huanjiong 2; Alatalo, Juha Mikael 5; Tao, Zexing 2; Ge, Quansheng 2,3
刊名	INTERNATIONAL JOURNAL OF CLIMATOLOGY
	2021-05-13
页码	13
关键词	chilling mountain phenology remote sensing start of growing season temperate broadleaf deciduous forest
ISSN号	0899-8418
DOI	10.1002/joc.7170
通讯作者	Dai, Junhu(daijh@igsnrr.ac.cn) ; Ge, Quansheng(geqs@igsnrr.ac.cn)
英文摘要	Mountain ecosystems are sensitive to climate change, and vegetation phenology provides one of the best signals to exemplify ecosystem responses to climate change. Vegetation phenology of mountain ecosystems is usually characterized with an elevational pattern, with the growing season starts earlier and ends later in lower versus higher elevations. With climate change, this elevational gradient of vegetation phenology is likely to shift as well. However, both the patterns and the underlying driving forces for potential changes in this elevational gradient of vegetation phenology are still unclear. Here, we used 500-m resolutioned normalized difference vegetation index (NDVI) data from Moderate Resolution Imaging Spectroradiometer (MODIS) for the period of 2001 to 2017 to investigate changes in the start of growing season (SOS) along the elevational gradient for six mountains in northern China dominated by broadleaf deciduous forests. We found that while SOS consistently advanced for most of the pixels, the elevational lapse rate of SOS (S-E) showed various trends for different mountains. Specifically, S-E showed a significant (p-value < .05) decreasing trend for the two southernmost mountains, indicating an increasing elevational synchronization in SOS. However, such phenological synchronization was not found in other temperate mountains. As warming has caused relatively consistent increases in heat forcing across different elevations and among different mountains but has led to highly various changes in chilling hours between high and low elevations, we suggested that the distinctive pattern in elevational synchronicity of spring phenology between southern and northern mountains in temperate China was primarily due to their different recent changes in chilling hours. Our work provides a novel key hypothesis for explaining the divergent changes in elevational gradients of vegetation phenology that can be tested in other regions for mountain ecosystems.
资助项目	National Key R&D Program of China[2018YFA0606102] ; National Natural Science Foundation of China[41771056] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDA19020303]
WOS关键词	LEAF BUD BURST ; CLIMATE-CHANGE ; TEMPERATURE SENSITIVITY ; PLANT PHENOLOGY ; TREE PHENOLOGY ; CARBON UPTAKE ; SHIFTS ; VARIABILITY ; ECOSYSTEMS ; MODELS
WOS研究方向	Meteorology & Atmospheric Sciences
语种	英语
出版者	WILEY
WOS记录号	WOS:000649855800001
资助机构	National Key R&D Program of China ; National Natural Science Foundation of China ; Strategic Priority Research Program of Chinese Academy of Sciences
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/161568]
专题	中国科学院地理科学与资源研究所
通讯作者	Dai, Junhu; Ge, Quansheng
作者单位	1.Hainan Univ, Coll Ecol & Environm, Haikou, Hainan, Peoples R China 2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, Beijing, Peoples R China 3.Univ Chinese Acad Sci, Beijing, Peoples R China 4.CAS HEC, China Pakistan Joint Res Ctr Earth Sci, Islamabad, Pakistan 5.Qatar Univ, Environm Sci Ctr, Doha, Qatar
推荐引用方式 GB/T 7714	Dai, Junhu,Zhu, Mengyao,Mao, Wei,et al. Divergent changes of the elevational synchronicity in vegetation spring phenology in North China from 2001 to 2017 in connection with variations in chilling[J]. INTERNATIONAL JOURNAL OF CLIMATOLOGY,2021:13.
APA	Dai, Junhu.,Zhu, Mengyao.,Mao, Wei.,Liu, Ronggao.,Wang, Huanjiong.,...&Ge, Quansheng.(2021).Divergent changes of the elevational synchronicity in vegetation spring phenology in North China from 2001 to 2017 in connection with variations in chilling.INTERNATIONAL JOURNAL OF CLIMATOLOGY,13.
MLA	Dai, Junhu,et al."Divergent changes of the elevational synchronicity in vegetation spring phenology in North China from 2001 to 2017 in connection with variations in chilling".INTERNATIONAL JOURNAL OF CLIMATOLOGY (2021):13.