干旱区生态环境知识资源中心(Arid): The effect of urban temperature gradients on grassland microclimate amelioration in Los Angeles, USA

Arid

DOI	10.1111/avsc.12556
	The effect of urban temperature gradients on grassland microclimate amelioration in Los Angeles, USA
	English, John; Wright, Alexandra J.
通讯作者	English, J (corresponding author), CSU Los Angeles, Biol Sci, 5151 State Univ Dr, Los Angeles, CA 90032 USA.
来源期刊	APPLIED VEGETATION SCIENCE
ISSN	1402-2001
EISSN	1654-109X
出版年	2021
卷号	24 期号:1
英文摘要	Aim Microclimate amelioration between neighboring plants may be more common in environments with greater abiotic stress. This pattern has been shown in deserts, alpine systems, and forests, but has not been explored along urban severity gradients. In this study we hypothesized that strong temperature gradients in the greater Los Angeles area might be driving changes in microclimate amelioration in annual grasslands. Location Twenty-seven sites along a 100-km latitudinal, 72-km longitudinal urban gradient across the greater Los Angeles area in California, USA. Methods We measured macro- and microclimate variables during the 2019 growing season. We took measurements of temperature, humidity, and vapor pressure deficit (VPD) at the site level as well as under grass canopies. Results We found strong cooling effects of the vegetation during the day and warming effects from vegetation at night. We found that these effects were strongest on the hottest/driest days and at the hottest (and often most urban) sites. Conclusions Our microclimate amelioration data suggest that positive interactions might become stronger along urban temperature gradients and may be determining plant interactions in these areas in a way that was not previously considered.
英文关键词	California grasslands facilitation heat islands humidity stress gradient hypothesis temperature urban ecology vapor pressure deficit
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000605012200001
WOS关键词	POSITIVE INTERACTIONS ; FACILITATION ; CALIFORNIA ; CLIMATE ; PLANTS ; TRANSPIRATION ; CONSEQUENCES ; CONDUCTANCE ; COMPETITION ; CAVITATION
WOS类目	Plant Sciences ; Ecology ; Forestry
WOS研究方向	Plant Sciences ; Environmental Sciences & Ecology ; Forestry
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/349517
作者单位	[English, John; Wright, Alexandra J.] Calif State Univ Los Angeles, Dept Biol Sci, Los Angeles, CA 90032 USA
推荐引用方式 GB/T 7714	English, John,Wright, Alexandra J.. The effect of urban temperature gradients on grassland microclimate amelioration in Los Angeles, USA[J],2021,24(1).
APA	English, John,&Wright, Alexandra J..(2021).The effect of urban temperature gradients on grassland microclimate amelioration in Los Angeles, USA.APPLIED VEGETATION SCIENCE,24(1).
MLA	English, John,et al."The effect of urban temperature gradients on grassland microclimate amelioration in Los Angeles, USA".APPLIED VEGETATION SCIENCE 24.1(2021).