IMHE OpenIR  > 成都山地所知识仓储(2009年以前)
桂西北喀斯特丘陵区峰丛洼地小流域泥沙堆积的~(137)Cs示踪研究
Alternative TitleStudy on sediment deposition in a peak-cluster depression catchment using ~(137)Cs technique in
李豪1,2; 张信宝1,3; 白晓永1,2; 何永彬1,2; 王克林4
2010
Source Publication泥沙研究
ISSN0468-155X
Issue3Pages:17-24
SubtypeArticle
Contribution Rank1
Abstract西南喀斯特地区是我国生态环境最脆弱的地区之一,土壤侵蚀及其造成的石漠化已成为制约该区可持续发展最严重的生态环境问题.本文以桂西北喀斯特丘陵区环江成义屯的峰丛洼地小流域为研究对象,运用~(137)Cs示踪技术对洼地泥沙堆积与小流域土壤流失速率进行了定量研究.结果表明,1963-2007年的44年间,洼地泥沙堆积速率和堆积模数分别为0.38cm·a~(-1)和51.4t·km~(-2)·a~(-1).讨论了流域土壤地面流失与洼地泥沙堆积速率的关系,认为前者应比较接近于后者,研究小流域的土壤地面流失模数为57.1t·km~(-2)·a~(-1).研究结果表明,研究区域近几十年以来的地面水土流失轻微,土壤流失速率仅为数十t·km~(-1)·a~(-1).
Other AbstractThe Karst area of Southwest China is considered as one of regions having the most fragile ecological environment in China. Soil erosion and rocky desertification have become the most severe environmental concerns in the region. However, the reliable studies about soil erosion and sediment in that region are limited and the fundamental researches lag behind the practices of governing rocky desertification for a long time. A study on sediment deposition and soil loss rates has been undertaken in a hill peak -cluster depression catchment of hilly area of Northwest Guangxi by using ~(137)Cs technique. For the period from 1963 to 2007, the average deposition rate and deposition modulus of the catchment are 0. 38cm·yr~(-1) and 51. 4t·km~(-2)·yr~(-1), respectively. The relation between the surface soil loss rate and the sediment deposition rate was also discussed. They are very close and the surface soil loss rate of the catchment is 57.1t·km~(-2)·yr~(-1). The results indicate that the surface soil loss rate was slight in the study areas.
Keyword桂西北 喀斯特丘陵区 峰丛洼地 泥沙堆积 ~(137)Cs示踪
DOI10.16239/j.cnki.0468-155x.2010.01.012
Indexed ByCSCD
Language中文
CSCD IDCSCD:3857604
Citation statistics
Cited Times:5[CSCD]   [CSCD Record]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/25764
Collection成都山地所知识仓储(2009年以前)
Corresponding Author张信宝
Affiliation1.中国科学院水利部成都山地灾害与环境研究所;
2.中国科学院研究生院;
3.中国科学院地球化学研究所环境地球化学国家重点实验室;
4.中国科学院亚热带农业生态研究所
First Author Affilication中国科学院水利部成都山地灾害与环境研究所
Corresponding Author Affilication中国科学院水利部成都山地灾害与环境研究所
Recommended Citation
GB/T 7714
李豪,张信宝,白晓永,等. 桂西北喀斯特丘陵区峰丛洼地小流域泥沙堆积的~(137)Cs示踪研究[J]. 泥沙研究,2010(3):17-24.
APA 李豪,张信宝,白晓永,何永彬,&王克林.(2010).桂西北喀斯特丘陵区峰丛洼地小流域泥沙堆积的~(137)Cs示踪研究.泥沙研究(3),17-24.
MLA 李豪,et al."桂西北喀斯特丘陵区峰丛洼地小流域泥沙堆积的~(137)Cs示踪研究".泥沙研究 .3(2010):17-24.
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