Towards the influences of three types of biocrusts on soil water in drylands: Insights from horizontal infiltration and soil water retention
文献类型：期刊论文
| 作者 | Sun, Fuhai1; Xiao, Bo2,3,4; Kidron, Giora J.5 |
| 刊名 | GEODERMA
 |
| 出版日期 | 2022-12-15 |
| 卷号 | 428页码:16 |
| ISSN号 | 0016-7061 |
| 关键词 | Biological soil crust Soil water diffusivity Soil water sorptivity Soil water-holding capacity Soil water balance Chinese Loess Plateau |
| DOI | 10.1016/j.geoderma.2022.116136 |
| 通讯作者 | Xiao, Bo(xiaobo@cau.edu.cn) |
| 英文摘要 | As a "living skin " of soil in drylands, biocrusts possibly change the retention and movement of soil water, and thus critically influence hydrological and erosion processes as well as soil moisture regime. Contrary to vertical infiltration, little attention was paid to horizontal infiltration, which may provide important information on soil water diffusivity and sorptivity. In this study, the one-dimensional horizontal infiltration experiments for bare soil and three types of biocrusts (cyanobacterial, cyanobacterial-moss mixed, and moss crusts) were conducted with disturbed soil samples in a semiarid dryland. Undisturbed soil samples were also taken for each treatment, and their soil water retention capacity were determined in the laboratory. The substantial differences that were found were analyzed, and the differences were further validated through monitoring and comparing their in situ soil moisture regimes at depth of 0-20 cm. Our results showed that the three types of biocrusts had significantly lower constant infiltration rate (0.11 vs. 0.18 cm min(-1)) and infiltration water amount (6.75 vs. 10.01 cm) than bare soil, and their wetting front moved much slower (0.60 vs. 1.14 cm min(-1)) in comparison to bare soil, with bare soil > cyanobacterial crusts > cyanobacterial-moss mixed crusts > moss crusts. Total sorptivity of cyanobacterial, mixed, and moss crusts were 21%, 32%, and 53% lower than that of bare soil, respectively. More importantly, at the same level of water content, all crust types had lower water diffusivity, sorptivity, and conductivity than the bare soil, and exhibited a higher water content than bare soil at a same level of matric potential (across the range of -15,000-0 hPa), indicating an increase in water-holding capacity and water availability of the biocrusts in contrast to bare soil. Furthermore, the in-situ soil water content of all biocrusts increased on average by 30% at depth of 0-10 cm but decreased by 23% at 10-20 cm. Confirming the lower infiltrability and higher water-holding capacity of the biocrusts in comparison to bare soil, biocrusts increase surface soil water retention capacity and water availability at the surface, thus playing a vital role in reshaping the surface soil water balance, which subsequently may affect surface hydropedological and biochemical processes in drylands. |
| WOS关键词 | MOSS-DOMINATED BIOCRUSTS ; BIOLOGICAL SOIL ; LOESS PLATEAU ; HYDRAULIC-PROPERTIES ; NEGEV DESERT ; PHYSICOCHEMICAL CHARACTERISTICS ; MICROBIOTIC CRUSTS ; SURFACE-ROUGHNESS ; TENGGER DESERT ; WESTERN NEGEV |
| 资助项目 | National Natural Science Foundation of China[42077010] ; Light of West China Program of the Chinese Academy of Sciences[2019] ; Open Fund for Key Laboratory of Land Degradation and Ecological Restoration in Northwestern China of Ningxia University[LDER2022Z02] |
| WOS研究方向 | Agriculture |
| 语种 | 英语 |
| 出版者 | ELSEVIER |
| WOS记录号 | WOS:000861737900001 |
| 资助机构 | National Natural Science Foundation of China ; Light of West China Program of the Chinese Academy of Sciences ; Open Fund for Key Laboratory of Land Degradation and Ecological Restoration in Northwestern China of Ningxia University |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/185035]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Xiao, Bo |
| 作者单位 | 1.China Agr Univ, Coll Land Sci & Technol, Key Lab Arable Land Conservat North China, Minist Agr & Rural Affairs, Beijing 100193, Peoples R China 2.Ningxia Univ, Breeding Base State Key Lab Land Degradat & Ecol R, Key Lab Restorat & Reconstruct Degraded Ecosyst No, Minist Educ, Yinchuan 750021, Peoples R China 3.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess Pl, Yangling 712100, Shaanxi, Peoples R China 4.Chinese Acad Sci, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess Pl, Minist Water Resources, 26, Xinong Rd, Yangling 712100, Shaanxi, Peoples R China 5.Hebrew Univ Jerusalem, Inst Earth Sci, Givat Ram Campus, IL-91904 Jerusalem, Israel |
| 推荐引用方式 GB/T 7714 | Sun, Fuhai,Xiao, Bo,Kidron, Giora J.. Towards the influences of three types of biocrusts on soil water in drylands: Insights from horizontal infiltration and soil water retention[J]. GEODERMA,2022,428:16. |
| APA | Sun, Fuhai,Xiao, Bo,&Kidron, Giora J..(2022).Towards the influences of three types of biocrusts on soil water in drylands: Insights from horizontal infiltration and soil water retention.GEODERMA,428,16. |
| MLA | Sun, Fuhai,et al."Towards the influences of three types of biocrusts on soil water in drylands: Insights from horizontal infiltration and soil water retention".GEODERMA 428(2022):16. |
入库方式： OAI收割
来源：地理科学与资源研究所
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