干旱区生态环境知识资源中心(Arid): Daily minimum temperature and precipitation control on spring phenology in arid-mountain ecosystems in China

Arid

DOI	10.1002/joc.6351
	Daily minimum temperature and precipitation control on spring phenology in arid-mountain ecosystems in China
	Du, Jun 1,2; Li, Kai 3; He, Zhibin 1,2; Chen, Longfei 1,2; Lin, Pengfei 1,2,4; Zhu, Xi 1,2,4
通讯作者	He, Zhibin
来源期刊	INTERNATIONAL JOURNAL OF CLIMATOLOGY
ISSN	0899-8418
EISSN	1097-0088
出版年	2020
卷号	40 期号:5 页码:2568-2579
英文摘要	Climate anomaly has caused substantial shifts in phenology of mountain ecosystems, but the underlying mechanism of phenological responses to climate change is still not well understood. In essence, the abundance of vegetation communities increases the complexity of phenology-climate relationships, leading to a certain limitation in predictions of future dynamics among different vegetation types using a unified model. In this study, we focused on the climatic constraints on spring phenology in arid mountains (AMs) of China, and emphasis was laid on accurate representation of mechanisms that control phenology across different vegetation types. We Firstly explored spatio-temporal variations in satellite-derived estimates of starting date of vegetation growing season (SOS) over the period 2000-2015 using moderate-resolution imaging spectro-radiometer (MODIS) normalized difference vegetation index (NDVI). Phenological models in response to climate variability were then established by using mixed-effect models based on satellite observations and an extensive dataset of climatic measurements. Our results showed that the climatic regulation on SOS varied greatly over vegetation types. More climatic factors that regulate phenological development were found in grassland than forest and shrubland. At ecosystem level, two critical climate factors, daily minimum temperature (T-min) and precipitation, explained 74-95% of total variability in predicted SOS. The observed sensitivity to T-min is expected to be closely linked with the risk of frost damage, while preseason precipitation determines water availability in spring. The varying ecosystem sensitivity revealed the different resilience and adaptability to changing climate among vegetation types, which have been linked to their eco-physiological characteristics (e.g., water use efficiency) and environmental conditions (e.g., elevation). Overall, our results indicate a strong dependence of spring phenology on T-min and precipitation, and create an opportunity for a more realistic representation of vegetation phenology and growth of AM plants in China in land surface models.
英文关键词	arid mountain ecosystems climate change daily minimum temperature NDVI precipitation spring phenology
类型	Article
语种	英语
国家	Peoples R China
收录类别	SCI-E
WOS记录号	WOS:000494630200001
WOS关键词	GREEN-UP DATE ; CLIMATE-CHANGE ; FROST DAMAGE ; ECOLOGICAL RESPONSES ; VEGETATION ; SATELLITE ; EXTREMES ; REGIONS ; IMPACTS ; TREES
WOS类目	Meteorology & Atmospheric Sciences
WOS研究方向	Meteorology & Atmospheric Sciences
EI主题词	2019-11-06
来源机构	兰州大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/310774
作者单位	1.Chinese Acad Sci, Linze Inland River Basin Res Stn, Chinese Ecosyst Res Network, Lanzhou 730000, Gansu, Peoples R China; 2.Chinese Acad Sci, Key Lab Ecohydrol Inland River Basin, Northwest Inst Ecoenvironm & Resources, Lanzhou, Gansu, Peoples R China; 3.Lanzhou Univ, Coll Earth Environm Sci, Key Lab Western Chinas Environm Syst, Lanzhou, Gansu, Peoples R China; 4.Univ Chinese Acad Sci, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Du, Jun,Li, Kai,He, Zhibin,et al. Daily minimum temperature and precipitation control on spring phenology in arid-mountain ecosystems in China[J]. 兰州大学,2020,40(5):2568-2579.
APA	Du, Jun,Li, Kai,He, Zhibin,Chen, Longfei,Lin, Pengfei,&Zhu, Xi.(2020).Daily minimum temperature and precipitation control on spring phenology in arid-mountain ecosystems in China.INTERNATIONAL JOURNAL OF CLIMATOLOGY,40(5),2568-2579.
MLA	Du, Jun,et al."Daily minimum temperature and precipitation control on spring phenology in arid-mountain ecosystems in China".INTERNATIONAL JOURNAL OF CLIMATOLOGY 40.5(2020):2568-2579.