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Spatial distribution of caliche nodules in surface soil and their influencing factors in the Liudaogou catchment of the northern Loess Plateau, China

文献类型：期刊论文

作者Ming’an Shao2,3; Tiexiong Gong2,3; Yuanjun Zhu2,3; Zhu, YJ (reprint author), Northwest A&F Univ, State Key Lab Soil Eros & Dryland Fanning Loess P, Yangling 712100, Shaanxi, Peoples R China.
刊名GEODERMA
出版日期2018
卷号329页码:11-19
关键词Caliche Nodules Slope Vegetation Cover Elevation Northern Loess Plateau
ISSN号0016-7061
DOI10.1016/j.geoderma.2018.05.012
文献子类Article
英文摘要Quantifying the distribution of caliche nodules in a catchment is a basis toward understanding soil erosion and soil degradation as well as soil-water processes in the soil containing caliche nodules. In this study, field surveys and soil sampling were coupled with spatial and statistical analyses along with image processing to investigate the spatial distribution of caliche nodules and their influencing factors in the Liudaogou catchment, the northern Loess Plateau of China. Results showed that more caliche nodules were present at the top of the mountain, mountain ridges, roadsides, edges of ravines, and other high elevation regions, as represented by comparatively higher caliche nodule coverage (CNC, 11.26-18.28%). Caliche nodules were rarely present in low elevation areas such as the terraced cropland and check dam, as represented by lower CNC ( < 2.55%). More than 65% of the total caliche nodules had a diameter of 10-50 mm. The caliche nodule coverage and diameter showed strong spatial dependence. The CNC was significantly related to the slope gradient and vegetation cover (P < 0.01), and the caliche nodule diameter (CND) was significantly related to the elevation (P < 0.01). Two simple models were established to predict the CNC and CND values given the parameters of slope gradient and vegetation cover. The validation of the models showed relatively high accuracy. These findings quantify caliche nodule distribution in a catchment for the first time, and may benefit the assessment of soil erosion and soil degradation in this special soil in the Loess Plateau.
学科主题Agriculture
出版地PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
语种英语
WOS记录号WOS:000436221200002
出版者ELSEVIER SCIENCE BV
资助机构National Natural Science Foundation of China [41371242, 41530854] ; National Natural Science Foundation of China [41371242, 41530854] ; Key Research Program of the Chinese Academy of Sciences [KFZD-SW-306] ; Key Research Program of the Chinese Academy of Sciences [KFZD-SW-306] ; National Natural Science Foundation of China [41371242, 41530854] ; National Natural Science Foundation of China [41371242, 41530854] ; Key Research Program of the Chinese Academy of Sciences [KFZD-SW-306] ; Key Research Program of the Chinese Academy of Sciences [KFZD-SW-306]
源URL[http://ir.iswc.ac.cn/handle/361005/8178]  
专题水保所科研产出--SCI_2018--SCI
通讯作者Zhu, YJ (reprint author), Northwest A&F Univ, State Key Lab Soil Eros & Dryland Fanning Loess P, Yangling 712100, Shaanxi, Peoples R China.
作者单位1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
2.Northwest A&F Univ, State Key Lab Soil Eros & Dryland Fanning Loess P, Yangling 712100, Shaanxi, Peoples R China
3.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China
4.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China
推荐引用方式
GB/T 7714		 Ming’an Shao,Tiexiong Gong,Yuanjun Zhu,et al. Spatial distribution of caliche nodules in surface soil and their influencing factors in the Liudaogou catchment of the northern Loess Plateau, China[J]. GEODERMA,2018,329:11-19.
APA Ming’an Shao,Tiexiong Gong,Yuanjun Zhu,&Zhu, YJ .(2018).Spatial distribution of caliche nodules in surface soil and their influencing factors in the Liudaogou catchment of the northern Loess Plateau, China.GEODERMA,329,11-19.
MLA Ming’an Shao,et al."Spatial distribution of caliche nodules in surface soil and their influencing factors in the Liudaogou catchment of the northern Loess Plateau, China".GEODERMA 329(2018):11-19.

入库方式： OAI收割

来源：水土保持研究所

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