文档介绍：土壤侵蚀原理实习指导书(水土保持与荒漠化防治专业) 西北农林科技大学资源环境学院 2012 年7月目录第一章实习地自然和社会概况····································································· 1 第一节自然环境特征··········································································· 1 一、地质地貌·················································································· 1 二、气候及水文··············································································· 1 三、植被与土壤··············································································· 2 第二节人文环境特征··········································································· 2 一、土地资源利用及生产力········