IMHE OpenIR  > 山地表生过程与生态调控重点实验室
Alternative TitleParticle Characteristics of Eroded Purple Soil from Slope Land in the Three Gorges Reservoir Region
郭进; 文安邦; 严冬春; 史忠林; 巨莉
Corresponding Author文安邦
Source Publication水土保持学报
Other AbstractSimulated rainstorm experiment was carried out on a selected 20° runoff plot filled with purple soil which was long-term under farming practice,grain size composition and its variations of the experimental purple soil were analyzed,comparisons between sediment and soil grain size distributions were conducted as well as the changes of sediment particle composition during the individual event.The results show that:(1)Purple soil contains a broad range of grain sizes,biggish heterogeneity exists in slope surface soil and fine soil particles(0.002~0.25 mm) are of the highest content.(2)Finer primary soil particles and micro-aggregates(0.05 mm),which are the main body of sediment,occupies more than 65% of the total sediment during the early phase of the event,of which silt and micro-aggregates(0.002~0.05 mm) occupies the most.Mean enrichments of the two types of particles in the individual sediment samples are 1.30,1.44,respectively during the early phase of the event and 1.12,1.10,respectively of the total sediment.(3)Mean enrichments of physical clay(0.01 mm) and waters-table aggregate(0.25 mm) of the sediment are 1.10,1.16,respectively.(4)Grain size composition of the individual sediment sample gradually comes close to the matrix soil as the event continued.
Keyword紫色土 土壤侵蚀 颗粒组成 微团聚体 三峡库区
Funding Organization国家科技支撑计划项目(2011BAD31B03);中国科学院西部行动计划项目(KZCX2-XB3-09)
Document Type期刊论文
Recommended Citation
GB/T 7714
郭进,文安邦,严冬春,等. 三峡库区紫色土坡地土壤颗粒流失特征[J]. 水土保持学报,2012,26(3):18-21.
APA 郭进,文安邦,严冬春,史忠林,&巨莉.(2012).三峡库区紫色土坡地土壤颗粒流失特征.水土保持学报,26(3),18-21.
MLA 郭进,et al."三峡库区紫色土坡地土壤颗粒流失特征".水土保持学报 26.3(2012):18-21.
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