干旱区生态环境知识资源中心(Arid): Effects of sand burial disturbance on establishment of three desert shrub species in the margin of oasis in northwestern China

Arid

DOI	10.1111/1440-1703.1269
	Effects of sand burial disturbance on establishment of three desert shrub species in the margin of oasis in northwestern China
	Wang, Guohua 1,2; Yu, Kailiang 3; Gou, Qianqian 1
通讯作者	Wang, Guohua
来源期刊	ECOLOGICAL RESEARCH
ISSN	0912-3814
EISSN	1440-1703
出版年	2019
卷号	34 期号:1 页码:127-135
英文摘要	Sand burial is an important environmental disturbance which determines seed germination, plant establishment, and plant fitness in sand dune ecosystems. But the critical importance of sand burial for seedling establishment of desert shrubs is rarely explored. We investigated the effects of sand burial at different regimes (0, 1, 2, 3, 4 and 5 cm, the main depths of soil seed bank) on the seedling emergence, growth and survival rate of three dominant desert shrubs (Calligonum mongolicum, Nitraria sphaerocarpa and Haloxylon ammodendron) for ecosystem restoration in sand dunes of northwestern China. The results indicated that shallow burial improved the seedling emergence and the subsequent seedling survival rate for the initial establishment period. The optimal burial depths were 2, 4 and 5 cm for H. ammodendron, N. sphaerocarpa and C. mongolicum, respectively; this difference in optimal burial depth may account for observed decreased regeneration of H. ammodendron as compared to the other two species. Beyond the optimal depths, we found that sand burial prevented seedling emergence for H. ammodendron and N. sphaerocarpa. Only a small proportion of seedlings can emerged from deep burial depth by increasing seedling biomass allocation to blow-ground stem. However, after emergence deep sand burial stimulated growth rate of emerged seedlings, increased the seedling vigor and promoted the seedling establishment. We suggest that sand burial could affect plant regeneration and potentially leaded to shift in species composition. Choice of suitable species for ecosystem restoration needs to account for its ability in term of seed germination and plant establishment/regeneration to adapt to disturbance of sand burial.
英文关键词	desert shrub species morphological adaptive allocation sand burial seedling emergence seedling survival
类型	Article
语种	英语
国家	Peoples R China ; USA
收录类别	SCI-E
WOS记录号	WOS:000457098500018
WOS关键词	SEED SIZE ; RAIN-FOREST ; GERMINATION ; EMERGENCE ; SURVIVAL ; MASS ; DEPTH ; BANKS ; PATTERNS ; FITNESS
WOS类目	Ecology
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/215231
作者单位	1.Shanxi Normal Univ, Coll Geog Sci, Linfen 041000, Peoples R China; 2.Chinese Acad Sci, Key Lab Ecohydrol & River Basin Sci, Linze Inland River Basin Res Stn, Lanzhou, Gansu, Peoples R China; 3.Univ Virginia, Dept Environm Sci, Clark Hall, Charlottesville, VA 22903 USA
推荐引用方式 GB/T 7714	Wang, Guohua,Yu, Kailiang,Gou, Qianqian. Effects of sand burial disturbance on establishment of three desert shrub species in the margin of oasis in northwestern China[J],2019,34(1):127-135.
APA	Wang, Guohua,Yu, Kailiang,&Gou, Qianqian.(2019).Effects of sand burial disturbance on establishment of three desert shrub species in the margin of oasis in northwestern China.ECOLOGICAL RESEARCH,34(1),127-135.
MLA	Wang, Guohua,et al."Effects of sand burial disturbance on establishment of three desert shrub species in the margin of oasis in northwestern China".ECOLOGICAL RESEARCH 34.1(2019):127-135.