干旱区生态环境知识资源中心(Arid): Trends in extreme climatic indices across the temperate steppes of China from 1961 to 2013

Arid

	Trends in extreme climatic indices across the temperate steppes of China from 1961 to 2013
	Li Yang; Wang Yuhui; Song Jianmin
来源期刊	Journal of Plant Ecology
ISSN	1752-9921
出版年	2019
卷号	12 期号:3 页码:485-497
英文摘要	Aims Extreme climate events have become more severe and frequent with global change in recent years.The Chinese temperate steppes are an important component of the Eurasian steppes and highly sensitive and vulnerable to climatic change.As a result,the occurrence of extreme climate events must have strong impacts on the temperate steppes.Therefore,understanding the spatio-temporal trends in extreme climate is important for us to assess the sensitivity and vulnerability of Chinese temperate steppes to climatic changes.This research had two specific objects to (i) specify the temporal changes in extreme climate events across the whole steppe and (ii) compare the trend differences for extreme climate events in different types of steppesmeadow steppe,typical steppe and desert steppe.Methods To investigate extreme climate trends in the temperate steppes of China,82 meteorological stations with daily temperature and precipitation data (1961-2013) were used.Meanwhile,eight core extreme climate indices (extreme high-temperature threshold,extreme lowtemperature threshold,frost days,heatwave duration,heavy rainfall threshold,percentage of heavy rainfall,heavy rainfall days and consecutive dry days) from the Statistical and Regional Dynamical Downscaling of Extremes for European Regions (STARDEX) project were selected to analyse the trends in extreme climate across the whole temperate steppe and the three main types (meadow steppe,typical steppe and desert steppe) through time and space.Important Findings The results showed that (i) the changes in extreme climatic temperature events across the whole temperate steppe were obvious during 1961-2013.The frost days (-3.40 days/10 year [yr]) decreased significantly,while the extreme high-temperature threshold (0.24°C/10 yr),extreme low-temperature threshold (0.52°C/10 yr),and heatwave duration (0.58 days/10 yr) increased notably.The annual changes in extreme precipitation were small and not significant.(ii) Differences appeared in the extreme climatic trends in different types of steppes.The desert steppe showed strong climate extremes and underwent the most significant asymmetric warming compared with the meadow steppe and typical steppe.At the same time,the heatwave duration (0.62 days/10 yr) increased.In terms of the extreme precipitation,there was no significant trend among the three types of steppes.However,the fluctuations in extreme precipitation were the largest in the desert steppe compared to those in the typical steppe and meadow steppe.
英文关键词	trend extreme climatic indices temperate steppe extreme precipitation extreme temperature
类型	Article
语种	英语
收录类别	CSCD
WOS研究方向	Life Sciences & Biomedicine - Other Topics
CSCD记录号	CSCD:6502298
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/336119
作者单位	Li Yang, Institute of Botany,Chinese Academy of Sciences;;Institute of Geographic Sciences and Natural Resources Research,Chinese Academy of Sciences;;University of Chinese Academy of Sciences, State Key Laboratory of Vegetation and Environmental Change;;Key Laboratory of Ecosystem Network Observation and Modeling,Chinese Academy of Sciences;;, ;;;;, Beijing;;Beijing;;Beijing 100093;;100101;;100049.; Wang Yuhui, Institute of Botany,Chinese Academy of Sciences,20 Nanxincun,Xiangshan, State Key Laboratory of Vegetation and Environmental Change, Beijing 100093, China.; Song Jianmin, Institute of Botany,Chinese Academy of Sciences,20 Nanxincun,Xiangshan, State Key Laboratory of Vegetation and Environmental Change, Beijing 100093, China.
推荐引用方式 GB/T 7714	Li Yang,Wang Yuhui,Song Jianmin. Trends in extreme climatic indices across the temperate steppes of China from 1961 to 2013[J],2019,12(3):485-497.
APA	Li Yang,Wang Yuhui,&Song Jianmin.(2019).Trends in extreme climatic indices across the temperate steppes of China from 1961 to 2013.Journal of Plant Ecology,12(3),485-497.
MLA	Li Yang,et al."Trends in extreme climatic indices across the temperate steppes of China from 1961 to 2013".Journal of Plant Ecology 12.3(2019):485-497.