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Factors that Influence the Vertical Distribution of Soil Water Content in the Critical Zone on the Loess Plateau, China
Qiao, Jiangbo1; Zhu, Yuanjun2; Jia, Xiaoxu3; Huang, Laiming3; Shao, Ming'an2,3,4
2018-05-17
Source PublicationVADOSE ZONE JOURNAL
ISSN1539-1663
Volume17Issue:1Pages:7
Corresponding AuthorZhu, Yuanjun(jiangboqiao815@163.com)
AbstractIn arid and semiarid regions, determining the vertical distribution of the soil water content (SWC) in the Earth's Critical Zone is important for understanding hydrological processes and for evaluating soil water storage (SWS) levels. However, the vertical distribution of SWC and its storage in deeper layers are unclear due to the difficulties associated with soil sampling. In this study, we investigated the vertical distribution of the SWC and SWS, and analyzed the relationship between SWC and related soil properties, including bulk density (BD), sand, silt, clay, and soil organic C (SOC), from the top of the soil profile to the bedrock at five sampling sites on the Loess Plateau in China (Yangling, Changwu, Fuxian, An'sai, and Shenmu) by soil core drilling. The results showed that the SWC variations at the five sampling sites tended to become weak as the depth increased. The mean SWC of all sampling sites exhibited a decreasing trend from south to north, with a significant difference (P < 0.01). Stepwise multiple regression analysis and state-space modeling showed that the BD was an important factor that affected the variations in the SWC in the deep soil layer. The trend of vertical distribution of the SWS was similar to that of the SWC. The results of this study deepen our understanding of the water conditions in deep soil layers, as well as the evaluation of SWS on the Loess Plateau in China.
DOI10.2136/vzj2017.11.0196
WOS KeywordSPACE MODELING APPROACH ; TEMPORAL STABILITY ; MOISTURE-CONTENT ; SPATIAL-PATTERN ; ORGANIC-CARBON ; SCALE ; VARIABILITY ; PROFILES ; CATCHMENT ; SURFACE
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[415711300781] ; National Natural Science Foundation of China[41371242] ; National Natural Science Foundation of China[41530854] ; National Key Research and Development Program of China[2016YFC0501706-03]
Funding OrganizationNational Natural Science Foundation of China ; National Key Research and Development Program of China
WOS Research AreaEnvironmental Sciences & Ecology ; Agriculture ; Water Resources
WOS SubjectEnvironmental Sciences ; Soil Science ; Water Resources
WOS IDWOS:000440562000001
PublisherSOIL SCI SOC AMER
Citation statistics
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/54466
Collection中国科学院地理科学与资源研究所
Corresponding AuthorZhu, Yuanjun
Affiliation1.Northwest A&F Univ, Coll Resources & Environm, Yangling 712100, Shaanxi, Peoples R China
2.Northwest A&F Univ, State Key Lab Soil Eros & Dryland Agr Loess Plate, Yangling 712100, Shaanxi, Peoples R China
3.Chinese Acad Sci, Key Lab Ecosyst Network Observ & Modelling, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China
4.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Qiao, Jiangbo,Zhu, Yuanjun,Jia, Xiaoxu,et al. Factors that Influence the Vertical Distribution of Soil Water Content in the Critical Zone on the Loess Plateau, China[J]. VADOSE ZONE JOURNAL,2018,17(1):7.
APA Qiao, Jiangbo,Zhu, Yuanjun,Jia, Xiaoxu,Huang, Laiming,&Shao, Ming'an.(2018).Factors that Influence the Vertical Distribution of Soil Water Content in the Critical Zone on the Loess Plateau, China.VADOSE ZONE JOURNAL,17(1),7.
MLA Qiao, Jiangbo,et al."Factors that Influence the Vertical Distribution of Soil Water Content in the Critical Zone on the Loess Plateau, China".VADOSE ZONE JOURNAL 17.1(2018):7.
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