EFFECTS OF EROSION AND DEPOSITION ON PARTICLE SIZE DISTRIBUTION OF DEPOSITED FARMLAND SOILS ON THE CHINESE LOESS PLATEAU

CORC > 成都山地灾害与环境研究所 > 中国科学院水利部成都山地灾害与环境研究所 > 山地表生过程与生态调控重点实验室

	EFFECTS OF EROSION AND DEPOSITION ON PARTICLE SIZE DISTRIBUTION OF DEPOSITED FARMLAND SOILS ON THE CHINESE LOESS PLATEAU
	Zhao, Pei 1; Shao, Ming An 2; Omran, Wail 3; Amer, Abdel-Monem Mohamed 3
刊名	REVISTA BRASILEIRA DE CIENCIA DO SOLO
	2011-11-01
卷号	35 期号:6 页码:2135-2144
关键词	soil texture stratification soil erodibility dam construction soil conservation
ISSN号	0100-0683
通讯作者	Zhao, P（赵培）
英文摘要	Particle 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.
WOS标题词	Science & Technology ; Life Sciences & Biomedicine
类目[WOS]	Soil Science
研究领域[WOS]	Agriculture
关键词[WOS]	ORGANIC-MATTER ; WATER-CONTENT ; VARIABILITY ; FRACTIONS ; DAM
收录类别	SCI
语种	英语
WOS记录号	WOS:000299438600028
公开日期	2013-06-25
内容类型	期刊论文
源URL	[http://ir.imde.ac.cn/handle/131551/5475]
专题	成都山地灾害与环境研究所_山地表生过程与生态调控重点实验室
作者单位	1.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
推荐引用方式 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.