资源描述：
《汶川大地震陇东黄土高原崩塌滑坡的调查分析》由会员上传分享，免费在线阅读，更多相关内容在行业资料-天天文库。
1、第28卷第12期生态学报Vo.l28,No.122008年12月ACTAECOLOGICASINICADec.,2008汶川大地震陇东黄土高原崩塌滑坡的调查分析12,*1姚文波,刘文兆,侯甬坚(1.陕西师范大学西北历史环境与经济社会发展研究中心暨中国历史地理研究所,陕西西安710062;2.中国科学院水利部水土保持研究所,陕西杨陵712100)摘要:通过对甘肃省庆阳市、平凉市5.12汶川大地震地质灾害实地调查,发现此次地震造成的崩塌和滑坡,以小型为主,数量众多,主要分布在现代侵蚀沟边缘部位的断崖和陡坡上。地震在塬面、缓坡丘陵和川台地上所造成的崩塌,与
2、窑洞住宅和采矿业的分布基本一致。此次地震虽未造成大中型崩塌和滑坡,但对该地环境的影响不能忽视)))可改变微地貌、使未来几年内的土壤流失量有所增加等。认为在黄土高原地区,地震烈度到达Ô度以上,就会引起较为严重的重力侵蚀。对于我国地震高发区之一的黄土高原而言,探讨水土流失的成因时,须要关注地震的影响。关键词:5.12汶川大地震;陇东黄土高原;土壤侵蚀;环境效应文章编号:1000-0933(2008)12-5917-10中图分类号:Q143文献标识码:AInvestigationandanalysisofcollapsesandlandslidesonth
3、eLoessPlateauofEastGansuProvinceafterthe5.12WenchuanEarthquake12,*1YAOWen-Bo,LIUWen-Zhao,HOUYong-Jian1CenterforHistoricalEnvironmentandSocio-EconomicDevelopmentinNorthwestChinaandChineseHistoricalGeographyResearchInstitute,ShaanxiNormalUniversity,Xican710062,China2InstituteofSo
4、ilandWaterConservation,ChineseAcademyofSciencesandMinistryofWaterResources,Yangling712100,ShaanxiProvince,ChinaActaEcologicaSinica,2008,28(12):5917~5926.Abstract:Thispaperisbasedonthefieldinvestigationofthegeologicaldisasterthatcausedbythe5.12WenchuanEarthquakeinQingyangCityand
5、PingliangCity,GansuProvince.Itisfoundthattheearthquake-inducedcollapsesandlandslidesarecharcterizedbysmalltypeandlargenumberandaremainlydistributedattheoftheedgesofmodernerosionditch;Theearthquake-inducedlandslidesdistributedinthetablelandsurface,gentleslopehillsandtablelandoft
6、hevalley,isconsistentwiththecavedwellingandtheengineeringconstruction.Althoughthisearthquakehasnotcausedlargeormedium-sizedlandslip,wecnnontneglecttheinfluenceofitsnaturalenvironment,whichmaychangethemicrophysiognomyandincreasethesoilerosionetc.inthenextfewyears.Itindicatesthat
7、itwillcausemoreseriousgravityerosiononcetheearthquakeintensityoverdegreeÔintheLoessPlateauarea,whichslightlyhasthedifferencefromtheformergeneralrecognition.FortheLoessPlateauthatisoneofthefrequentearthquakeareasinChina,effectsofthe基金项目:国家/十一五0科技支撑计划课资助项目(2006BAD09B09)收稿日期:2008-
8、09-20;修订日期:2008-11-21作者简介:姚文波(1963~),男,甘肃镇原人,博士生,主要从事黄
