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Pedotransfer functions for estimating the field capacity and permanent wilting point in the critical zone of the Loess Plateau, China
Qiao, Jiangbo1; Zhu, Yuanjun2; Jia, Xiaoxu3; Huang, Laiming3; Shao, Ming'an2,3
2019
Source PublicationJOURNAL OF SOILS AND SEDIMENTS
ISSN1439-0108
Volume19Issue:1Pages:140-147
Corresponding AuthorZhu, Yuanjun(zhuyuanjun@foxmail.com)
AbstractPurposeField capacity (FC) and permanent wilting point (PWP) are important physical properties for evaluating the available soil water storage, as well as being used as input variables for related agro-hydrological models. Direct measurements of FC and PWP are time consuming and expensive, and thus, it is necessary to develop related pedotransfer functions (PTFs). In this study, stepwise multiple linear regression (SMLR) and artificial neural network (ANN) methods were used to develop FC and PWP PTFs for the deep layer of the Loess Plateau based on the bulk density (BD),sand, silt, clay, and soil organic carbon (SOC) contents.Materials and methodsSoil core drilling was used to obtain undisturbed soil cores from three typical sites on the Loess Plateau, which ranged from the top of the soil profile to the bedrock (0-200m). The FC and PWP were measured using the centrifugation method at suctions of -33 and -1500kPa, respectively.Results and discussionThe results showed that FC and PWP exhibited moderate variation where the coefficients of variation were 11 and 23%, respectively. FC had significant correlations with sand, silt, clay, and SOC (P<0.01), while there were also significant correlations between all of the variables and PWP. In addition, sand was an important input variable for predicting FC, and clay and BD for predicting PWP. The performance of the SMLR and ANN approaches was similar.ConclusionsIn this study, we developed new PTFs for FC and PWP as the first set of PTFs based on data obtained from deep profiles in the Loess Plateau. These PTFs are important for evaluating the soil water conditions in the deep profile in this region.
KeywordEarth's critical zone Field capacity Pedotransfer function Permanent wilting point
DOI10.1007/s11368-018-2036-x
WOS KeywordSOIL HYDRAULIC-PROPERTIES ; WATER RETENTION ; BULK-DENSITY ; PREDICTION ; REGRESSION ; TEXTURE
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China for a major international cooperation program between China and England[41571130081] ; 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 for a major international cooperation program between China and England ; National Natural Science Foundation of China ; National Key Research and Development Program of China
WOS Research AreaEnvironmental Sciences & Ecology ; Agriculture
WOS SubjectEnvironmental Sciences ; Soil Science
WOS IDWOS:000456207800014
PublisherSPRINGER HEIDELBERG
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Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/50528
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, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China
Recommended Citation
GB/T 7714
Qiao, Jiangbo,Zhu, Yuanjun,Jia, Xiaoxu,et al. Pedotransfer functions for estimating the field capacity and permanent wilting point in the critical zone of the Loess Plateau, China[J]. JOURNAL OF SOILS AND SEDIMENTS,2019,19(1):140-147.
APA Qiao, Jiangbo,Zhu, Yuanjun,Jia, Xiaoxu,Huang, Laiming,&Shao, Ming'an.(2019).Pedotransfer functions for estimating the field capacity and permanent wilting point in the critical zone of the Loess Plateau, China.JOURNAL OF SOILS AND SEDIMENTS,19(1),140-147.
MLA Qiao, Jiangbo,et al."Pedotransfer functions for estimating the field capacity and permanent wilting point in the critical zone of the Loess Plateau, China".JOURNAL OF SOILS AND SEDIMENTS 19.1(2019):140-147.
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