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EFFECTS OF EROSION AND DEPOSITION ON PARTICLE SIZE DISTRIBUTION OF DEPOSITED FARMLAND SOILS ON THE CHINESE LOESS PLATEAU
Zhao, Pei1; Shao, Ming An2; Omran, Wail3; Amer, Abdel-Monem Mohamed3
2011-11-01
Source PublicationREVISTA BRASILEIRA DE CIENCIA DO SOLO
Volume35Issue:6Pages:2135-2144
AbstractParticle size distribution (PSD) in the soil profile is strongly related to erosion, deposition, and physical and chemical processes. Water cycling and plant growth are also affected by PSD. Material sedimented upstream of the dam constructions formed large areas of deposited farmland (DF) soils on the Chinese Loess Plateau (CLP), which has been the site of the most severe soil erosion in the world. Two DFs without tillage on the CLP were chosen to study the combined effect of erosion and check dams on PSD. Eighty-eight layers (each 10 cm thick) of filled deposited farmland (FDF) soils and 22 layers of silting deposited farmland (SDF) soils of each studied soil profile were collected and 932 soil samples were investigated using laser granulometry. The particle sizes were stratified in both DFs based on soil properties and erosion resistance. The obtained results of clay and silt fractions showed similar horizontal distribution, indicating parallel characteristics of erosion and deposition processes. Fine sand represented the largest fraction, suggesting the preferential detachment of this fraction. The most erodible range of particle sizes was 0.25-0.5 mm, followed by 0.2-0.25 mm in the studied soil profiles. The correlation between particle size and soil water contents tended to increase with increasing water contents in FDF. Due to the abundant shallow groundwater, the relationship between particle size and soil water content in SDF was lost. Further studies on PSD in the DF area are needed to enhance the conservation management of soil and water resources in this region.
SubtypeArticle
KeywordSoil Texture Stratification Soil Erodibility Dam Construction Soil Conservation
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
WOS Subject ExtendedAgriculture
WOS KeywordORGANIC-MATTER ; WATER-CONTENT ; VARIABILITY ; FRACTIONS ; DAM
Indexed BySCI
Language英语
WOS SubjectSoil Science
WOS IDWOS:000299438600028
PublisherSOC BRASILEIRA DE CIENCIA DO SOLO
Citation statistics
Cited Times:7[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/67996
Collection中国科学院地理科学与资源研究所
Corresponding AuthorZhao, Pei
Affiliation1.CAS, Inst Mt Hazards & Environm, Key Lab Mt Surface Proc & Ecol Regulat, Chengdu, Peoples R China
2.CAS, Inst Geog Sci & Nat Resources Res, Beijing, Peoples R China
3.Menoufia Univ, Fac Agr, Dept Soil Sci, Menoufia, Egypt
Recommended Citation
GB/T 7714
Zhao, Pei,Shao, Ming An,Omran, Wail,et al. EFFECTS OF EROSION AND DEPOSITION ON PARTICLE SIZE DISTRIBUTION OF DEPOSITED FARMLAND SOILS ON THE CHINESE LOESS PLATEAU[J]. REVISTA BRASILEIRA DE CIENCIA DO SOLO,2011,35(6):2135-2144.
APA Zhao, Pei,Shao, Ming An,Omran, Wail,&Amer, Abdel-Monem Mohamed.(2011).EFFECTS OF EROSION AND DEPOSITION ON PARTICLE SIZE DISTRIBUTION OF DEPOSITED FARMLAND SOILS ON THE CHINESE LOESS PLATEAU.REVISTA BRASILEIRA DE CIENCIA DO SOLO,35(6),2135-2144.
MLA Zhao, Pei,et al."EFFECTS OF EROSION AND DEPOSITION ON PARTICLE SIZE DISTRIBUTION OF DEPOSITED FARMLAND SOILS ON THE CHINESE LOESS PLATEAU".REVISTA BRASILEIRA DE CIENCIA DO SOLO 35.6(2011):2135-2144.
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