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Effects of small rainfall events on Haloxylon ammodendron seedling establishment in Northwest China
Wang, Guohua1,2; Gou, Qianqian1; Zhao, Wenzhi2
2019-01-10
Source PublicationCURRENT SCIENCE
ISSN0011-3891
Volume116Issue:1Pages:121-127
Corresponding AuthorWang, Guohua(gimi123@126.com)
AbstractSmall 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.
KeywordArid regions Haloxylon ammodendron seedling establishment small rainfall events
DOI10.18520/cs/v116/i1/121-127
WOS KeywordPRECIPITATION PULSES ; WATER PULSES ; SOIL-WATER ; ECOHYDROLOGY ; GERMINATION ; FREQUENCY ; RESPONSES ; DESERTS ; PLANTS ; BANKS
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[41701045] ; Opening Fund of Key Laboratory of Ecohydrology of Inland River Basin, Chinese Academy of Sciences[KLEIRB-ZS-16-05]
Funding OrganizationNational Natural Science Foundation of China ; Opening Fund of Key Laboratory of Ecohydrology of Inland River Basin, Chinese Academy of Sciences
WOS Research AreaScience & Technology - Other Topics
WOS SubjectMultidisciplinary Sciences
WOS IDWOS:000455326500028
PublisherINDIAN ACAD SCIENCES
Citation statistics
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/50614
Collection中国科学院地理科学与资源研究所
Corresponding AuthorWang, Guohua
Affiliation1.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
Recommended Citation
GB/T 7714
Wang, Guohua,Gou, Qianqian,Zhao, Wenzhi. Effects of small rainfall events on Haloxylon ammodendron seedling establishment in Northwest China[J]. CURRENT SCIENCE,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.
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