气候变化领域集成服务门户(CCPortal): Effects of foliage litter of a pioneer shrub (Artemisia halodendron) on germination from the soil seedbank in a semi-arid sandy grassland in China

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DOI	10.1007/s10265-017-0954-0
	Effects of foliage litter of a pioneer shrub (Artemisia halodendron) on germination from the soil seedbank in a semi-arid sandy grassland in China
	Luo, Yongqing; Zhao, Xueyong; Li, Yuqiang; Wang, Tao
发表日期	2017
ISSN	0918-9440
EISSN	1618-0860
卷号	130 期号:6
英文摘要	Vegetation recovery during succession is an important process for ecological restoration of the soil, especially in degraded sandy land. However, the driving mechanisms, such as how a pioneer species competes with other species, is uncertain. In China's Horqin Sandy Land, Artemisia halodendron is an important shrub that is common on semi-fixed dunes, where it replaces Agriophyllum squarrosum during succession, and is an important indicator species of the second stage of dune stabilization. However, how it outcompetes other species is still unclear. In this study, we conducted a seed bank germination experiment using soil from the native habitats of A. halodendron on semi-fixed dunes. We covered the soil with foliage litter of A. halodendron at a range of concentrations. Seed germination and seedling growth were strongly affected by the foliage litter. Seed germination and seedling growth were not harmed by a low concentration (ae50 g m(-2)) of the foliage litter but severely inhibited by high concentrations (ae100 g m(-2)). Strong allelopathy, indicated by decreased germination, increased seedling loss, and decreased plant biomass, appeared during the later stages of germination (after about 20 days of incubation). Our results suggest that as a pioneer shrub during the vegetation succession that occurs during dune stabilization, A. halodendron outcompeted other species through the allelopathic effect of its foliage litter. This helps to explain the patchy distribution and heterogeneity of vegetation communities in the Horqin Sandy Land.
关键词	Allelopathy Artemisia halodendron Degraded sandy grassland Seed bank Seedling growth Vegetation recovery
学科领域	Plant Sciences
语种	英语
WOS研究方向	Plant Sciences
来源期刊	JOURNAL OF PLANT RESEARCH
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/111896
作者单位	Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Naiman Desertificat Res Stn, 320 Donggang West Rd, Lanzhou 730000, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Luo, Yongqing,Zhao, Xueyong,Li, Yuqiang,et al. Effects of foliage litter of a pioneer shrub (Artemisia halodendron) on germination from the soil seedbank in a semi-arid sandy grassland in China[J]. 中国科学院西北生态环境资源研究院,2017,130(6).
APA	Luo, Yongqing,Zhao, Xueyong,Li, Yuqiang,&Wang, Tao.(2017).Effects of foliage litter of a pioneer shrub (Artemisia halodendron) on germination from the soil seedbank in a semi-arid sandy grassland in China.JOURNAL OF PLANT RESEARCH,130(6).
MLA	Luo, Yongqing,et al."Effects of foliage litter of a pioneer shrub (Artemisia halodendron) on germination from the soil seedbank in a semi-arid sandy grassland in China".JOURNAL OF PLANT RESEARCH 130.6(2017).