IMHE OpenIR  > 山地表生过程与生态调控重点实验室
紫色土坡地侵蚀产沙过程的7Be法初探
Alternative TitleIndicating Erosion and Sediment Yielding Processes on Purple Soil Slopes Using ~7Be Measurements
史忠林; 文安邦; 严冬春; 巨莉; 郭进
Corresponding Author文安邦
2013
Source Publication山地学报
Volume31Issue:1Pages:71-76
Other Abstract 利用环境放射性核素示踪技术研究土壤侵蚀是传统土壤侵蚀监测技术的重要补充手段。宇宙成因核素7Be具有半衰期短和在表土分布浅等特点,能够用于指示短时间尺度的坡面侵蚀堆积过程。采用7Be技术与泥沙颗粒分析相结合,定量判读了模拟降雨下紫色土坡面侵蚀过程演变。结果表明,对于20°坡面,7Be法指示的坡面侵蚀方式转折点与侵蚀泥沙颗粒变化得到的结果基本一致。7Be在表征侵蚀过程演变时具有独特的优势,可以将坡面片蚀发育过程随降雨时间的变化明显地识别出来。这对防治坡面侵蚀,特别是细沟侵蚀的发生具有重要意义。 
;  Fallout radionuclides tracing techniques have been proven to be an important complementally means to conventional soil erosion monitoring methods.Due to its short half-time and shallow distribution in soil profile,the cosmogenic radionuclide 7Be serves as a useful tool for indicating short-term erosion and sedimentation processes.Based on the combined use of 7Be measurements and sediment grain size analysis,this paper investigated the erosion and sediment yielding processes using simulated rainfall experiments undertaken on purple soil slopes.The results shown that the turning point of erosion forms estimated from 7Be measurements was similar to that of the sediment grain size analysis,especially for 20° slope.7Be approach has unique advantages when indicating the development of erosion processes and the sheet erosion can be clearly identified.This information has great significance in soil erosion prevention,especially rill erosion.
Keyword放射性核素 7be 紫色土 侵蚀 三峡库区
Subject Area土壤学 ; 水土保持学
Indexed ByCSCD
Language中文
CSCD IDCSCD:4874585
Funding Organization国家科技支撑计划项目课题(No.2011BAD31B03);中国科学院西部行动计划项目(No.KZCX2-XB3-09)
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/6602
Collection山地表生过程与生态调控重点实验室
科技与合作处
Recommended Citation
GB/T 7714
史忠林,文安邦,严冬春,等. 紫色土坡地侵蚀产沙过程的7Be法初探[J]. 山地学报,2013,31(1):71-76.
APA 史忠林,文安邦,严冬春,巨莉,&郭进.(2013).紫色土坡地侵蚀产沙过程的7Be法初探.山地学报,31(1),71-76.
MLA 史忠林,et al."紫色土坡地侵蚀产沙过程的7Be法初探".山地学报 31.1(2013):71-76.
Files in This Item:
File Name/Size DocType Version Access License
紫色土坡地侵蚀产沙过程的_7Be法初探_(594KB) 开放获取CC BY-NC-SAView Application Full Text
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[史忠林]'s Articles
[文安邦]'s Articles
[严冬春]'s Articles
Baidu academic
Similar articles in Baidu academic
[史忠林]'s Articles
[文安邦]'s Articles
[严冬春]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[史忠林]'s Articles
[文安邦]'s Articles
[严冬春]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: 紫色土坡地侵蚀产沙过程的_7Be法初探_史忠林.pdf
Format: Adobe PDF
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.