干旱区生态环境知识资源中心(Arid): Variation in soil bulk density and hydraulic conductivity within a quasi-circular vegetation patch and bare soil area

Arid

DOI	10.1007/s11368-019-02549-3
	Variation in soil bulk density and hydraulic conductivity within a quasi-circular vegetation patch and bare soil area
	Liu, Qingsheng 1,2; Liu, Gaohuan 1; Huang, Chong 1; Li, He 1
通讯作者	Liu, Qingsheng
来源期刊	JOURNAL OF SOILS AND SEDIMENTS
ISSN	1439-0108
EISSN	1614-7480
出版年	2020
卷号	20 期号:4 页码:2019-2030
英文摘要	Purpose Soil bulk density and hydraulic conductivity are two of many key factors for vegetation establishment and the other way around. Variations in them may cause patchy vegetation distribution in arid and semiarid areas. Characterizing their spatial variations in relation to quasi-circular vegetation patches (QVPs) is important for the effective revegetation of wetlands in the Yellow River Delta (YRD), China. Materials and methods This study investigated the variations of soil bulk density and hydraulic conductivity based on 86 soil bulk density and 63 hydraulic conductivity samples within a quasi-circular vegetation patch area in the YRD. The nonparametric Mann-Whitney U and Kruskal-Wallis H tests, respectively, were used to evaluate the differences in soil bulk density and hydraulic conductivity between the QVPs and bare soil areas. Results and discussions There were significant differences in soil bulk density and hydraulic conductivity between QVPs and bare soil areas. Conversely, there were no significant differences in the two parameters among different QVPs. The average QVP bulk density and hydraulic conductivity (2.0 cm suction) were 12.4% lower and 191.8% higher, respectively, than those of bare soil areas. Plant species communities within QVPs did not significantly differ in terms of their influences on hydraulic conductivity but did differ in terms of their impacts on soil bulk density. Soil bulk density increased from the QVP centers to their edges whereas the opposite was observed for hydraulic conductivity. This finding indicated that QVPs drastically increase soil hydraulic conductivity, and soil bulk density influenced the spatial distribution of plant species communities within QVPs. Conclusions This study expanded our understanding of occurrence and encroachment of QVPs in the YRD, may help understand spontaneous plant colonization and succession mechanism and lay the foundation for developing adaptive wetland restoration strategies in the YRD.
英文关键词	Quasi-circular vegetation patch Soil bulk density Soil hydraulic conductivity Wetlands Yellow River Delta
类型	Article
语种	英语
国家	Peoples R China
收录类别	SCI-E
WOS记录号	WOS:000505375300001
WOS关键词	YELLOW-RIVER DELTA ; PLANT COLONIZATION ; SEASONAL-CHANGES ; FOREST ; RESTORATION ; SUCCESSION ; COMPACTION ; GROWTH
WOS类目	Environmental Sciences ; Soil Science
WOS研究方向	Environmental Sciences & Ecology ; Agriculture
EI主题词	2020-01-03
来源机构	中国科学院地理科学与资源研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/312373
作者单位	1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, State Key Lab Resources & Environm Informat Syst, Beijing 100101, Peoples R China; 2.Jiangsu Ctr Collaborat Innovat Geog Informat Reso, Nanjing 210023, Jiangsu, Peoples R China
推荐引用方式 GB/T 7714	Liu, Qingsheng,Liu, Gaohuan,Huang, Chong,et al. Variation in soil bulk density and hydraulic conductivity within a quasi-circular vegetation patch and bare soil area[J]. 中国科学院地理科学与资源研究所,2020,20(4):2019-2030.
APA	Liu, Qingsheng,Liu, Gaohuan,Huang, Chong,&Li, He.(2020).Variation in soil bulk density and hydraulic conductivity within a quasi-circular vegetation patch and bare soil area.JOURNAL OF SOILS AND SEDIMENTS,20(4),2019-2030.
MLA	Liu, Qingsheng,et al."Variation in soil bulk density and hydraulic conductivity within a quasi-circular vegetation patch and bare soil area".JOURNAL OF SOILS AND SEDIMENTS 20.4(2020):2019-2030.