干旱区生态环境知识资源中心(Arid): Sandy Habitats Play an Important Role in Shrub Encroachment in Grasslands

Arid

DOI	10.3390/agronomy12112858
	Sandy Habitats Play an Important Role in Shrub Encroachment in Grasslands
	Xie, Lina; Li, Yuchen; Guo, Hongyu; Wang, Chunwen; Chen, Qing; He, Peng; Ma, Chengcang
通讯作者	Ma, CC
来源期刊	AGRONOMY-BASEL
EISSN	2073-4395
出版年	2022
卷号	12 期号:11
英文摘要	Shrub species have increased in density and cover in desertification areas, however, the role of sandy habitats in contributing to the expansion of shrubs is poorly understood. Although the effect of sandy habitats on plant growth and reproduction have been demonstrated, most existing studies lack either experimental demonstration or an integrated study during the whole shrub life cycle. We performed field and laboratory experiments to examine the responses of four stages in the life cycle of shrubs (seed germination, plant growth, seed reproduction, clonal reproduction) to sandy habitats (including sand substrate, sand burial and wind erosion) for Caragana shrubs. Results showed that both sand substrate and sand burial facilitated seed germination, seedling biomass, sapling establishment, plant growth, and root-shoot ratio of Caragana. Meanwhile, they both strongly increased seed number and seed preservation, and thus enhanced sexual reproduction. Sand burial favored clonal reproduction of Caragana by promoting the formation of branch-derived ramets, while wind erosion benefited clonal reproduction by facilitating the formation of root-derived ramets. These results suggested that sandy habitats facilitated seed germination, plant growth, sexual reproduction, and clonal reproduction of Caragana, which could explain why shrub abundance, shrub area and shrub height of Caragana in sandy areas was higher than in grasslands. Our study provided an experimental demonstration that sandy habitats promoted the population growth of Caragana shrubs during the whole life cycle and highlighted the significant role of sandy habitats in facilitating shrub encroachment in grasslands.
英文关键词	sand burial wind erosion sand substrate clonal reproduction sexual reproduction Caragana species
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000894358800001
WOS关键词	SEED-GERMINATION ; WIND EROSION ; BURIAL DISTURBANCE ; BIOMASS ALLOCATION ; CLIMATE GRADIENT ; SOIL TEXTURE ; GROWTH ; REPRODUCTION ; SURVIVAL ; DESERT
WOS类目	Agronomy ; Plant Sciences
WOS研究方向	Agriculture ; Plant Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/391786
推荐引用方式 GB/T 7714	Xie, Lina,Li, Yuchen,Guo, Hongyu,et al. Sandy Habitats Play an Important Role in Shrub Encroachment in Grasslands[J],2022,12(11).
APA	Xie, Lina.,Li, Yuchen.,Guo, Hongyu.,Wang, Chunwen.,Chen, Qing.,...&Ma, Chengcang.(2022).Sandy Habitats Play an Important Role in Shrub Encroachment in Grasslands.AGRONOMY-BASEL,12(11).
MLA	Xie, Lina,et al."Sandy Habitats Play an Important Role in Shrub Encroachment in Grasslands".AGRONOMY-BASEL 12.11(2022).