干旱区生态环境知识资源中心(Arid): Effects of small rainfall events on Haloxylon ammodendron seedling establishment in Northwest China

Arid

DOI	10.18520/cs/v116/i1/121-127
	Effects of small rainfall events on Haloxylon ammodendron seedling establishment in Northwest China
	Wang, Guohua 1,2; Gou, Qianqian 1; Zhao, Wenzhi2
通讯作者	Wang, Guohua
来源期刊	CURRENT SCIENCE
ISSN	0011-3891
出版年	2019
卷号	116 期号:1 页码:121-127
英文摘要	Small rainfall events (<= 5 mm) account for a large proportion of rainfall amount, and may play an important role in triggering plant regeneration in arid ecosystems. However, their potential ecological importance in seedling establishment of desert shrub has been previously ignored. We conducted two parallel pot experiments to examine the effects of amount and interval of small rainfall events on seedling emergence, growth and survival of the dominant shrub species Haloxylon ammodendron in sand dunes of Northwest China. The results showed that: (1) decrease in rainfall amounts did not significantly lower seedling emergence, growth and survival in comparison to control, while the large increase (+20%) in rainfall amount resulted in significant increase in seedling emergence, growth and survival for both continuous and intermittent small rainfall events; (2) continuous small rainfall events were more effective than intermittent ones for triggering seedling emergence, growth and survival; (3) small rainfall events may impact the seedling establishment of H. ammodendron only in wet years. Our results provide insights into the effects of small rainfall events on seedling establishment processes, and highlight the inherent complexity in predicting how seedling establishment of shrub species in desert ecosystems will respond to future fluctuations in small rainfall events.
英文关键词	Arid regions Haloxylon ammodendron seedling establishment small rainfall events
类型	Article
语种	英语
国家	Peoples R China
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000455326500028
WOS关键词	PRECIPITATION PULSES ; WATER PULSES ; SOIL-WATER ; ECOHYDROLOGY ; GERMINATION ; FREQUENCY ; RESPONSES ; DESERTS ; PLANTS ; BANKS
WOS类目	Multidisciplinary Sciences
WOS研究方向	Science & Technology - Other Topics
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/215013
作者单位	1.Shanxi Normal Univ, Coll Geog Sci, Linfen 041000, Peoples R China; 2.Chinese Acad Sci, Linze Inland River Basin Res Stn, Chinese Ecosyst Res Network, Key Lab Ecohydrol & River Basin Sci,Cold & Arid R, Lanzhou 730000, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Wang, Guohua,Gou, Qianqian,Zhao, Wenzhi. Effects of small rainfall events on Haloxylon ammodendron seedling establishment in Northwest China[J],2019,116(1):121-127.
APA	Wang, Guohua,Gou, Qianqian,&Zhao, Wenzhi.(2019).Effects of small rainfall events on Haloxylon ammodendron seedling establishment in Northwest China.CURRENT SCIENCE,116(1),121-127.
MLA	Wang, Guohua,et al."Effects of small rainfall events on Haloxylon ammodendron seedling establishment in Northwest China".CURRENT SCIENCE 116.1(2019):121-127.