干旱区生态环境知识资源中心(Arid): Soil biocrusts reduce seed germination and contribute to the decline in Artemisia ordosica Krasch. shrub populations in the Mu Us Sandy Land of North China

Arid

DOI	10.1016/j.gecco.2021.e01467
	Soil biocrusts reduce seed germination and contribute to the decline in Artemisia ordosica Krasch. shrub populations in the Mu Us Sandy Land of North China
	Li, Xu; Yu, Ming-Han; Ding, Guo-Dong; He, Yingying; Liu, Wei; Wang, Chun-Yuan
通讯作者	Yu, MH ; Ding, GD (corresponding author), Beijing Forestry Univ, Yanchi Res Stn, Sch Soil & Water Conservat, Beijing 100083, Peoples R China.
来源期刊	GLOBAL ECOLOGY AND CONSERVATION
ISSN	2351-9894
出版年	2021
卷号	26
英文摘要	The sand-stabilising, xeric shrub Artemisia ordosica Krasch. has experienced widespread decline decades after being widely distributed through seeding in the Mu Us Sandy Land in China. The role of biocrusts in the decline of A. ordosica populations has received attention but has not been directly confirmed. To clarify the effects of biocrusts on shrub decline, a field study was conducted with different biocrust treatments (bare sand, lichen biocrust, moss biocrust, biocrust removed) in August 2019 in the Mu Us Sandy Land in North China. In each biocrust treatment, the age structure, dynamic indices, and reproductive allocation patterns of the A. ordosica population were determined, in addition to soil characteristics. A separate laboratory study was conducted to determine the effects of soil moisture and nutrients on seed germination. With the development of biocrust, the age structure of A. ordosica populations began to decline, but when the biocrust was removed, A. ordosica seedlings re-established. Soil moisture and nutrient contents were higher under lichen biocrust (earlier stage of biocrust development) and biocrust removal than under moss biocrust (later stage of biocrust development). In response to the adverse conditions under biocrust, A. ordosica increased reproductive output while reducing vegetative growth, thereby increasing the possibility for offspring dispersal and colonisation of new habitats. By contrast, with biocrust removal, A. ordosica reduced reproductive allocation. In addition, with the development of biocrust, soil moisture was reduced, and seed germination was limited. Thus, biocrusts are important in the decline of A. ordosica in sandy lands because of reductions in seed germination, which further suggests that moderate removal of biocrusts to improve seed germination can be key in the sustainable development of sandy land vegetation. (c) 2021 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
英文关键词	Survival strategy Population decline Reproductive allocation Productivity Seedling establishment Sandy lands
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:000641413600008
WOS关键词	VEGETATION SUCCESSION ; PLANT ; DESERT ; ALLOCATION ; CRUSTS ; RESTORATION ; NUTRIENTS ; BIOMASS ; DUNES ; ESTABLISHMENT
WOS类目	Biodiversity Conservation ; Ecology
WOS研究方向	Biodiversity & Conservation ; Environmental Sciences & Ecology
来源机构	北京林业大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/350453
作者单位	[Li, Xu; Yu, Ming-Han; Ding, Guo-Dong; He, Yingying; Liu, Wei; Wang, Chun-Yuan] Beijing Forestry Univ, Yanchi Res Stn, Sch Soil & Water Conservat, Beijing 100083, Peoples R China; [Li, Xu; Yu, Ming-Han; Ding, Guo-Dong; He, Yingying; Liu, Wei; Wang, Chun-Yuan] Beijing Forestry Univ, Key Lab State Forestry Adm Soil & Water Conservat, Beijing 100083, Peoples R China
推荐引用方式 GB/T 7714	Li, Xu,Yu, Ming-Han,Ding, Guo-Dong,et al. Soil biocrusts reduce seed germination and contribute to the decline in Artemisia ordosica Krasch. shrub populations in the Mu Us Sandy Land of North China[J]. 北京林业大学,2021,26.
APA	Li, Xu,Yu, Ming-Han,Ding, Guo-Dong,He, Yingying,Liu, Wei,&Wang, Chun-Yuan.(2021).Soil biocrusts reduce seed germination and contribute to the decline in Artemisia ordosica Krasch. shrub populations in the Mu Us Sandy Land of North China.GLOBAL ECOLOGY AND CONSERVATION,26.
MLA	Li, Xu,et al."Soil biocrusts reduce seed germination and contribute to the decline in Artemisia ordosica Krasch. shrub populations in the Mu Us Sandy Land of North China".GLOBAL ECOLOGY AND CONSERVATION 26(2021).