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Temporal variations in infiltration properties of biological crusts covered soils on the Loess Plateau of China
Wang, Hao1,2; Zhang, Guang-hui1,2; Liu, Fa3; Geng, Ren1,2; Wang, Lun-jiang1,2
2017-12-01
Source PublicationCATENA
ISSN0341-8162
Volume159Pages:115-125
Corresponding AuthorZhang, Guang-hui(ghzhang@bnu.edu.cn)
AbstractBiological soil crusts (BSCs) are widespread in abandoned farmlands over the Loess Plateau after the "Grain for Green" project was implemented in 1999. However, few studies have been carried out to quantify the effects of BSCs on temporal variations of soil infiltration properties. This study was conducted to investigate the effects of two typical BSC (moss and cyanobacteria) on the temporal variations of soil infiltration properties reflected by soil sorptivities under different pressures of 0 (S-0) and - 3 (S-3) cm, saturated hydraulic conductivity (K-s), and wetting front depth (WFD) on the Loess Plateau. Two BSC-covered sites and one bare soil site (as control) were selected to measure soil infiltration properties using a disc infiltrometer under two consecutive pressure heads of 0 and 3 cm, and then the S-0, S-3, and K-s were calculated. The WFD was measured quickly by a ruler after the measurement of soil infiltration. The experiments started from May 9 to October 8, 2015 for 7 times at approximately 3 weeks interval. Soil physicochemical properties and BSC thickness were also measured to explain the temporal variations of soil infiltration properties. The results showed that the thickness of moss and cyanobacteria crusts increased continually during the experimental period. BSC affected top-soil (0-5 cm) properties (soil water content, bulk density, texture, and organic matter content) significantly, and the effects of moss were greater than those of cyanobacteria. BSC was effective to impede soil infiltration. Compared to the control, the mean S-0, S-3, K-s, and WFD of moss-covered soil reduced by 31.4%, 25.2%, 39.0%, and 22.7%. While, S-0, S-3, K-s and WFD of cyanobacteria-covered soil declined by 21.5%, 18.2%, 29.3%, and 11.9%, respectively. The temporal variations in infiltration properties of both moss- and cyanobacteria-covered soils were similar. S-0, S-3, K-s, and WFD generally decreased over time. However, the related infiltration properties of bare soil fluctuated over time with no distinguish trend. The temporal variations in infiltration properties were closely related to the seasonal variations in BSC thickness and soil water content.
KeywordSoil infiltration properties Biological soil crusts growth Disc infiltrometer Temporal variability The Loess Plateau
DOI10.1016/j.catena.2017.08.009
WOS KeywordDIFFERENT LAND USES ; NEGEV DESERT ; MICROBIOTIC CRUSTS ; HYDRAULIC CONDUCTIVITY ; SEMIARID ECOSYSTEMS ; WESTERN-NEGEV ; RUNOFF GENERATION ; SAND DUNES ; ISRAEL ; VEGETATION
Indexed BySCI
Language英语
Funding ProjectNational Key R & D Program of China[2017YFC0504702] ; State Key Program of National Natural Science of China[41530858] ; Fund for Creative Research Groups of the National Natural Science Foundation of China[41621061]
Funding OrganizationNational Key R & D Program of China ; State Key Program of National Natural Science of China ; Fund for Creative Research Groups of the National Natural Science Foundation of China
WOS Research AreaGeology ; Agriculture ; Water Resources
WOS SubjectGeosciences, Multidisciplinary ; Soil Science ; Water Resources
WOS IDWOS:000412254700011
PublisherELSEVIER SCIENCE BV
Citation statistics
Cited Times:11[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/62207
Collection中国科学院地理科学与资源研究所
Corresponding AuthorZhang, Guang-hui
Affiliation1.Beijing Normal Univ, State Key Lab Earth Surface Proc & Resources, Beijing 100875, Peoples R China
2.Beijing Normal Univ, Fac Geog Sci, Beijing 100875, Peoples R China
3.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China
Recommended Citation
GB/T 7714
Wang, Hao,Zhang, Guang-hui,Liu, Fa,et al. Temporal variations in infiltration properties of biological crusts covered soils on the Loess Plateau of China[J]. CATENA,2017,159:115-125.
APA Wang, Hao,Zhang, Guang-hui,Liu, Fa,Geng, Ren,&Wang, Lun-jiang.(2017).Temporal variations in infiltration properties of biological crusts covered soils on the Loess Plateau of China.CATENA,159,115-125.
MLA Wang, Hao,et al."Temporal variations in infiltration properties of biological crusts covered soils on the Loess Plateau of China".CATENA 159(2017):115-125.
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