干旱区生态环境知识资源中心(Arid): Ecohydrological effects of biocrust type on restoration dynamics in drylands

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DOI	10.1016/j.scitotenv.2019.06.007
	Ecohydrological effects of biocrust type on restoration dynamics in drylands
	Chen, Ning 1,2; Liu, Xudong 1,2; Zheng, Kai 1,2; Zhang, Cankun 1,2; Liu, Yongjing 1,2; Lu, Kanglong 1,2; Jia, Rongliang 3; Zhao, Changming 1,2
通讯作者	Zhao, Changming
来源期刊	SCIENCE OF THE TOTAL ENVIRONMENT
ISSN	0048-9697
EISSN	1879-1026
出版年	2019
卷号	687 页码:527-534
英文摘要	Global climate change influences not only vascular plants, but also biological soil crusts (biocrusts), which play important roles in dryland vegetation dynamics by redistributing rainfall in soils. Different types of biocrusts, spanning a spectrum from cyanobacteria-dominated and moss-dominated, have distinct roles in rainfall redistribution patterns, but the ecohydrological effects of different biocrust types on dryland ecosystem dynamics remain largely unclear. This study developed an ecohydrological model with biocrust as a system state variable to explicitly explore the effects of different biocrust types on dryland vegetation dynamics in Shapotou region in northern China, particularly after restoration. The results indicated that both cyanobacteria-andmoss-dominated biocrusts could support high grass cover (approximately 40%) after restoration. Cyanobacterial, but not moss biocrusts, could also maintain a high level of shrub cover (13 and 3%, respectively). Shifting from cyanobacteria to mosses gradually increased the biocrust cover from approximately 40% to 80%. The biocrust's water-holding capacity (the volume of water it can intercept per unit area) is likely be able to explain the dynamics of biocrust and shrub cover (with correlation efficiency of R-2 = 0.972 and 0.987, respectively), but not grass cover (R-2 = 0.224). The findings suggest that biocrust type may significantly affect coverage of biocrusts and shrubs, but not grass coverage, and global climate change may influence dryland restoration by altering biocrust types. (C) 2019 Elsevier B.V. All rights reserved.
英文关键词	Biocrust type Restoration Ecohydrological model Drylands Vascular plants
类型	Article
语种	英语
国家	Peoples R China
收录类别	SCI-E
WOS记录号	WOS:000480316300055
WOS关键词	BIOLOGICAL SOIL CRUSTS ; VASCULAR PLANTS ; TENGGER-DESERT ; CLIMATE-CHANGE ; WATER ; DISTURBANCE ; VEGETATION ; MOISTURE ; GRASS ; GERMINATION
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
来源机构	兰州大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/218715
作者单位	1.Lanzhou Univ, Sch Life Sci, State Key Lab Grassland Agroecosyst, 222 Tianshui South Rd, Lanzhou 730000, Gansu, Peoples R China; 2.Lanzhou Univ, Yuzhong Mt Ecosyst Field Observat & Res Stn, 222 Tianshui South Rd, Lanzhou 730000, Gansu, Peoples R China; 3.Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Shapotou Desert Res & Environm Stn, 320 Donggang West Rd, Lanzhou 730000, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Chen, Ning,Liu, Xudong,Zheng, Kai,et al. Ecohydrological effects of biocrust type on restoration dynamics in drylands[J]. 兰州大学,2019,687:527-534.
APA	Chen, Ning.,Liu, Xudong.,Zheng, Kai.,Zhang, Cankun.,Liu, Yongjing.,...&Zhao, Changming.(2019).Ecohydrological effects of biocrust type on restoration dynamics in drylands.SCIENCE OF THE TOTAL ENVIRONMENT,687,527-534.
MLA	Chen, Ning,et al."Ecohydrological effects of biocrust type on restoration dynamics in drylands".SCIENCE OF THE TOTAL ENVIRONMENT 687(2019):527-534.