五陵塬边坡侵蚀地貌发育及其影响因素-论文.pdf

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1、第34卷第3期水土保持通报Vo1．34，No．32014年6月BulletinofSoilandWaterConservationJun．，2014五陵塬边坡侵蚀地貌发育及其影响因素杜忠潮，贺宝园(咸阳师范学院关中古代陵寝文化研究中心旅游与资源环境学院，陕西咸阳712000)摘要：基于前人研究成果和对陕西省关中平原中部五陵塬边坡侵蚀地貌大量的实地考察，应用遥感卫星图像等信息资料，对五陵塬南、北缘侵蚀沟谷和黄土滑塌的发育状况进行考察和分析。研究表明，五陵塬南缘发育的河流高阶地前坎(高差8～30m的

2、黄土崖)为窑洞聚落带，受坡面径流作用发育侵蚀沟谷和黄土坍塌；该塬边黄土窑洞带侵蚀沟谷的发育状况表现为东段密度较小，规模较大，西段反之。北缘河流高阶地前坎(高差3o～90m的黄土崖)西段主要发育“群发性”黄土滑塌。东段侵蚀沟谷数量少，长度较大。五陵塬边坡侵蚀地貌的发育，主要受地质构造、地形条件、新构造运动、黄土岩性和结构、大气降水与农田灌溉以及人类活动等因素影响，并会对五陵塬周边人类居住安全，边坡水土流失，塬面文物古迹保护和西咸新区发展建设产生负面影响效应。关键词：五陵塬；侵蚀地貌；发育；影响文献

3、标识码：A文章编号：1000—288X(2014)03—0316-07中图分类号：K903DevelopmentandImpactsofErodedLandformonSideSlopeofWulingTablelandDUZhong—chao，HEBao—yuan(CollegeofTourism，ResourcesandEnvironment，XianyangNormalUniversity，Xianyang，Shaanxi712000，China)Abstract：Basedonprevi

4、ousresearchresultsandfieldinvestigationsoferodedlandformonsideslopeoftheWulingtableland，intheEasternGuanzhongPlainofShaanxiProvincremotesensingsatelliteimagesandotherinformationareappliedtoanalyzethedevelopmentoferodedgullyandloesscollapseonthesouthe

5、rnandnorthernedgesoftheta—bleland．Thedevelopmentconditions，spatia1differencesandinfluencefactorsfortheerodedlandformarediscussed．Studiesshowthattheriversill(8~30mhighloesscliff)onthesouthernedgeofthetablelandiSthecavesettle—mentzone，theerodedgullyand

6、loesscollapseareaffectedbyrunoffandthecavezoneontheedgewithero—dedgullypresentsthedevelopmentofasmalldensitybutlargescaleontheeasternedge，butviceversaonthewesternsection．Ontheriversillofthenorthernmargin(30~9Omhighloesscliff)，themajordevelop—mentofth

7、ewesternpartischaracterizedbymassiveloesscollapsing，buttheeasternparthassmallamountandlongerodedvalleys．Theerodedlandformdevelopmentonside—slopeoftheWulingtablelandismainlyaf—fectedbygeologicalstructure，topographicalconditions，newtectonicmovement，loe

8、sslithologyandstrue—ture，atmosphericprecipitationandirrigation，aswellashumanactivities．Ithasnegativeeffectsoninhabita—tionsecurity，slopeerosion，highlandheritageconservationandthedevelopmentandconstructionoftheNewXi’an-XianyangDevelopingDistrict．Acade