Fourteen typical profiles of different altitude on the south slope of the taibai peak of qinling mountaint , which is 3767 meters in altitude , were researched in this study . by field survey , the physical and chemical characteristics anasysis of the soils , we studied thoroughly the soil genetic , discussed the positions in taxonomic classification and the distribution of the soils on the basis of the keys to chinese soil taxonomy ( 3rd edition ) , and to provide the foundation of soil taxonomy of mountain and resources development 本研究以海拔3767m的秦岭主峰太白山南坡不同海拔高度的14个典型土壤剖面为研究对象，通过野外调查、室内理化性质分析，研究了土壤的发生特性，以《中国土壤系统分类检索(第三版) 》为依据，确定了其在系统分类中的地位和分布界线。旨在为山地土壤系统分类和土壤资源开发利用提供依据。
Soil and water loss of city includes soil loss and water loss . with the short of water resource more and more serious , as do soil loss , water loss of city also affects the development of city . soil and water loss of city occurs not only on the earth surface , but also under the ground . the type of soil and water loss is diverse . at the same time , the characters of city soil and water loss are different in different regions 城市水土流失包括土的流失和水的流失。在水资源日益短缺的今天，城市水资源的流失与土壤资源的流失一样，严重影响着城市的发展，但在水土流失研究中对水资源的流失相对重视不够，将水土流失中水土的交互作用作为一个系统工程进行研究的工作则更少。城市水土流失不仅发生在地表，也发生在地表以下，共同构成城市水土流失的立体系统。
