兰州西部地区的黄土潜蚀作用  

A PRIMARY STUDY ON THE LOESS SUFFOSION EROSION IN THE AREA TO WEST OF LANZHOU,GANSU PROVINCE

作　　者：唐小明[1] 李长安[1] 黄长生 谢远云 刘雪梅 

机构地区：[1]中国地质大学

出　　处：《甘肃地质学报》1999年第1期72-77,共6页Acta Geologica Gansu

基　　金：红古城幅;新寺幅1:5万区域地质调查项目

摘　　要：黄土的侵蚀机理是开展黄土高原水土侵蚀综合治理的关键，通过兰州以西黄（河）湟（水）谷地黄土区１∶５万区域地质野外调查，认为黄土的潜蚀是黄土高原水土流失的一个重要因素。在黄土侵蚀的过程中，潜蚀作用起着重要的作用。在宏观上，它可以形成各种黄土潜蚀地貌，同时它还能引发或者加剧其他侵蚀作用。黄土的岩性是黄土具有潜蚀能力的内在因素，而气候、地下水、构造、植被以及人为因素是其外在因素。在黄土区１∶５万区域调查过程中应加强这一方面的调查。The mechanism of loess corrosion is pivotal in study on the water and soil erosion on the Loess Plateau.The authors draw a conclusion that suffosion erosion is a primary factor acting on water and soil erosion on the plateau by 1∶5,0000 regional geological investigation in the loess area to west of Lanzhou.Suffosion erosion takes an important action during the loess erosion.Macroscopical effects of this kind of corrosion incude:it can form all kinds of loess suffosion erosion and it can also bring and pick up other corrosion actions.Loess lithology is an intrinsic factor of suffosion erosion,while climate,groundwater,structure,vegetation and manmade diathesis all are exterior factors.In the end the authors suggest that more attention should be paid on applied Quaternary reseach during the 1∶50,000 regional geological investigation.

关 键 词：黄土潜蚀 地貌 区域地质调查 兰州 水土侵蚀 

分 类 号：P931.6[天文地球—自然地理学] S157.2[农业科学—土壤学]