IMHE OpenIR  > 山地灾害与地表过程重点实验室
地震效应下的土壤侵蚀空间分布特征及分析——以九寨沟地震为例
Alternative TitleSpatial distribution characteristics and analysis of soil erosion under earthquake effect:A case study of Jiuzhaigou earthquake
夏冰1; 范宣梅1; 郭晓军2; 杨帆1; 邹城彬1; 熊坤勇1
2020
Source Publication中国水土保持科学
ISSN2096-2673
Volume18Issue:1Pages:79-89
SubtypeArticle
Contribution Rank2
Abstract在空间信息技术(GIS)支持下应用USLE模型定量计算出九寨沟地震前后受灾区的土壤侵蚀强度,并对地震前后土壤侵蚀参数做了简要的对比分析,划分出受地震影响较大的区域,探讨该区域土壤侵蚀的空间分布规律与距发震断层距离、坡度、高程和坡向4个方面之间的关系,为震后灾区水土保持工作提供科学依据。结果表明:相比2015年该区域的侵蚀参数,地震后侵蚀面积增加55 km~2,侵蚀总量提高57%,平均侵蚀强度增加45%;在侵蚀强度类别中轻微度、轻度和中度的面积占比在震后全部下降,强度侵蚀及以上侵蚀的面积占比都有所上升,在地震影响下研究区的土壤侵蚀强度等级有向强度侵蚀等级及以上侵蚀等级转移的趋势;地震造成土壤侵蚀严重加剧的区域主要集中在距发震断层2 km范围内、坡度≥30° ~ 60°、高程≥2 000 ~ 4 000 m、坡向为北坡、东北坡和东南坡的地带。
Other Abstract[Background]The natural factors affecting soil erosion are soil,rainfall and vegetation.The structure and particle composition of the soil affect the soil′s ability to resist erosion and erosion.When the soil is loose,the adhesion between particles is weak,and the structure is loose,it is susceptible to water erosion.The earthquake in Jiuzhaigou caused the mountain body to be broken,soil loose and vegetation destruction in Jiuzhaigou county,which greatly increased the probability of soil erosion in Jiuzhaigou County.[Methods]Based on GIS and USLE models,the soil erosion intensity in the disaster area before and after the earthquake was quantitatively calculated,and the soil erosion parameters before and after the earthquake were briefly compared and analyzed,and the areas affected by the earthquake were divided.Combined the regional statistical analysis(Zonal)with ArcGIS,the relationship between the spatial distribution of soil erosion in this area and the distance from the fault,slope,elevation and aspect were explored.[Results]1)Compared with that before the earthquake,the erosion area after the earthquake increased by 8.1%,the total erosion increased by 28%,and the erosion intensity increased by 18.39%.In the erosion intensity category,the area proportion of slight,light and moderate erosion all decreased after the earthquake,while the area proportion of moderate and serious and above erosion increased.2)The closer the distance from the fault was,the larger the area of the earthquake prone was.As the distance from the fault increasing,the area of the easily-affected area decreased.In the easily-affected area,the increment of erosion intensity decreases sharply with the distance from the fault increasing.3)The areas susceptible to earthquake in the study area mainly occured at elevations of 2000-4000 m,accounting for 99%of the total area.In the slope range of 30°-60°,the erosion area accounted for 89.25%of the total area of the susceptible area,respectively.The areas affected by earthquake were distributed
Keyword土壤侵蚀 九寨沟地震 地理信息系统(GIS) 通用土壤流失方程(USLE)
DOI10.16843/j.sswc.2020.01.010
Indexed ByCSCD
Language中文
CSCD IDCSCD:6734040
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/35300
Collection山地灾害与地表过程重点实验室
Corresponding Author范宣梅
Affiliation1.成都理工大学地质灾害防治与地质环境保护国家重点实验室;
2.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
夏冰,范宣梅,郭晓军,等. 地震效应下的土壤侵蚀空间分布特征及分析——以九寨沟地震为例[J]. 中国水土保持科学,2020,18(1):79-89.
APA 夏冰,范宣梅,郭晓军,杨帆,邹城彬,&熊坤勇.(2020).地震效应下的土壤侵蚀空间分布特征及分析——以九寨沟地震为例.中国水土保持科学,18(1),79-89.
MLA 夏冰,et al."地震效应下的土壤侵蚀空间分布特征及分析——以九寨沟地震为例".中国水土保持科学 18.1(2020):79-89.
Files in This Item:
File Name/Size DocType Version Access License
地震效应下的土壤侵蚀空间分布特征及分析_(6160KB)期刊论文出版稿开放获取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
[夏冰]'s Articles
[范宣梅]'s Articles
[郭晓军]'s Articles
Baidu academic
Similar articles in Baidu academic
[夏冰]'s Articles
[范宣梅]'s Articles
[郭晓军]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[夏冰]'s Articles
[范宣梅]'s Articles
[郭晓军]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: 地震效应下的土壤侵蚀空间分布特征及分析_以九寨沟地震为例_夏冰.pdf
Format: Adobe PDF
This file does not support browsing at this time
All comments (0)
No comment.
 

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