干旱区生态环境知识资源中心(Arid): Effects of vegetation type on the microbial characteristics of the fissure soil-plant systems in karst rocky desertification regions of SW China

Arid

DOI	10.1016/j.scitotenv.2020.136543
	Effects of vegetation type on the microbial characteristics of the fissure soil-plant systems in karst rocky desertification regions of SW China
	Yan, Youjin 1; Dai, Quanhou 1,2; Hu, Gang 1; Jiao, Quan 1,3; Mei, Lina 1,2; Fu, Wenbing 1,4
通讯作者	Dai, Quanhou
来源期刊	SCIENCE OF THE TOTAL ENVIRONMENT
ISSN	0048-9697
EISSN	1879-1026
出版年	2020
卷号	712
英文摘要	In karst regions, shallow karst fissure (SKI') soil has proven to be an important plant habitat and soil resource. However, how plants affect the microbial abundance and community composition of SKI soil remains poorly studied. We explored the soil microbial community structure differences in fractured soil-plant systems by determining phospholipid fatty acid (PITA) profiles under three vegetation types (herbs, shrubs and trees) in SKI' and used a bare SKF without vegetation as the control in a karst rocky desertification area. The total microbial biomass and microbial community composition differed between surface soil and SKF soil. The total microbial biomass in surface soil was higher than that in SKF soil. In addition, in contrast to surface soil, the microbial communities in SKF soil were more vulnerable to the effects of environmental variables. Furthermore, plants had a significant positive effect on the accumulation of microbial biomass in surface and SKF soil: shrubs had the strongest effect, followed by trees. Vegetation types significantly affected the ratios of saturated PLFAs to monounsaturated PLFAs (SAT/MONO ratio) and cyclopropyl PLFAs to precursors (cy/pre ratio). In contrast to the SKF without vegetation, the SAT/MONO ratio and cylpre ratio under grasslands, shrublands and trees were low. Herbs and shrubs had the greatest capacity to enhance the ability of soil to respond to environmental stress compared to trees. Our results suggest that, as an important plant habitat in karst regions, the condition of SKF soil should be urgently improved. The stereoscopic collocation of shrub-grass vegetation may be the preferred measure for vegetation restoration. Deep-rooted shrubs and grasses are best at improving soil and plant growth. Our study can be useful for developing strategies for vegetation rehabilitation in karst regions. (C) 2020 Elsevier Boy. All rights reserved.
英文关键词	Karst rocky desertification (KRD) Shallow karst fissure (SKF) Vegetation type Phospholipid fatty acids (PLEA) Microbial community composition
类型	Article
语种	英语
国家	Peoples R China
收录类别	SCI-E
WOS记录号	WOS:000512369600050
WOS关键词	PHOSPHOLIPID FATTY-ACIDS ; SURFACE RUNOFF ; LAND-USE ; COMMUNITIES ; FOREST ; BACTERIAL ; EROSION ; QUALITY ; BIOMASS ; LITTER
WOS类目	Environmental Sciences
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/2XILL650/315524
作者单位	1.Guizhou Univ, Guizhou Univ Inst Soil Eros & Ecol Restorat, Inst Forest Resources & Environm Guizhou, Coll Forestry, Guiyang 550025, Peoples R China; 2.Guizhou Univ, Key Lab Plant Resource Conservat & Germplasm Inno, Collaborat Innovat Ctr Mt Ecol & AgroBioengn CICM, Minist Educ, Guiyang 550025, Guizhou, Peoples R China; 3.Zunyi City Honghuagang Dist Water Affairs Bur, Zunyi 563000, Guizhou, Peoples R China; 4.Guizhou Huabao Environm Technol Advisory Co Ltd, Guiyang 550000, Guizhou, Peoples R China
推荐引用方式 GB/T 7714	Yan, Youjin,Dai, Quanhou,Hu, Gang,et al. Effects of vegetation type on the microbial characteristics of the fissure soil-plant systems in karst rocky desertification regions of SW China[J],2020,712.
APA	Yan, Youjin,Dai, Quanhou,Hu, Gang,Jiao, Quan,Mei, Lina,&Fu, Wenbing.(2020).Effects of vegetation type on the microbial characteristics of the fissure soil-plant systems in karst rocky desertification regions of SW China.SCIENCE OF THE TOTAL ENVIRONMENT,712.
MLA	Yan, Youjin,et al."Effects of vegetation type on the microbial characteristics of the fissure soil-plant systems in karst rocky desertification regions of SW China".SCIENCE OF THE TOTAL ENVIRONMENT 712(2020).