干旱区生态环境知识资源中心(Arid): Late-season drought exerts more negative effects on plant diversity and cover than early-season drought through changing soil moisture in a semi-arid grassland

Arid

DOI	10.1111/jvs.13151
	Late-season drought exerts more negative effects on plant diversity and cover than early-season drought through changing soil moisture in a semi-arid grassland
	Miao, Renhui; Miao, Yuan; Liu, Yuli; Guo, Meixia; Fu, Guangya; Xiao, Rui; Yang, Zhongling; Li, Guoyong; Chen, Zhijie; Han, Shijie
通讯作者	Yang, ZL
来源期刊	JOURNAL OF VEGETATION SCIENCE
ISSN	1100-9233
EISSN	1654-1103
出版年	2022
卷号	33 期号:5
英文摘要	Questions Drought timing during the growing season can profoundly influence plant diversity and cover, with subsequent impacts on ecosystem functions and services in terrestrial environments. However, the different responses of plant communities to drought in different periods of the growing season remain uncertain. Location The research was conducted in a semi-arid grassland at the Duolun Restoration Ecology Research and Demonstration Station, in Inner Mongolia, China. Methods The responses of plant species richness and cover to early- and late-season drought with a four-year field experiment were examined in a semi-arid grassland in northern China. Soil moisture at different depths was measured to explore the underlying mechanisms of the drought effects on plant richness and cover. Results Over the four years, late- rather than early-season drought suppressed plant richness. Decreased species richness (-1.65 species) under late-season drought was mainly due to suppressed perennial forb richness (-1.88 species). Late-season drought also exerted greater negative effects on plant cover than early-season drought. Effects of late-season drought on plant cover depended on annual precipitation. Reduced plant cover (-7.5%) under early-season drought stemmed from declines in shrubs and semi-shrubs, particularly Artemisia frigida cover (-4.9%), which is sensitive to water deficits because of its shallow root depth (14.01 cm). Declined plant cover (-39.0%) under late-season drought was mainly caused by suppressed perennial forb (-21.5%) and shrub and semi-shrubs cover (-17.4%). The combined effects of early- and late-season drought on plant cover were greater than the treatment alone, likely due to aggravating water deficits under growing-season drought. Conclusions Our results suggest late-season drought is more critical for shifting plant communities. than early-season drought. Our findings highlight the regulatory role of drought timing on plant community composition and development in arid and semi-arid regions.
英文关键词	growing season precipitation timing rainout shelter soil moisture species diversity extreme drought climate change
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000865883600001
WOS关键词	COMMUNITY PRODUCTIVITY ; RAINFALL VARIABILITY ; SPECIES RICHNESS ; EXTREME DROUGHT ; CLIMATE ; RESPONSES ; MEMORY ; CHINA
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/2XILL650/393629
推荐引用方式 GB/T 7714	Miao, Renhui,Miao, Yuan,Liu, Yuli,et al. Late-season drought exerts more negative effects on plant diversity and cover than early-season drought through changing soil moisture in a semi-arid grassland[J],2022,33(5).
APA	Miao, Renhui.,Miao, Yuan.,Liu, Yuli.,Guo, Meixia.,Fu, Guangya.,...&Han, Shijie.(2022).Late-season drought exerts more negative effects on plant diversity and cover than early-season drought through changing soil moisture in a semi-arid grassland.JOURNAL OF VEGETATION SCIENCE,33(5).
MLA	Miao, Renhui,et al."Late-season drought exerts more negative effects on plant diversity and cover than early-season drought through changing soil moisture in a semi-arid grassland".JOURNAL OF VEGETATION SCIENCE 33.5(2022).