通过对起垄处理5年（2003-2007年）后的重度苏打盐碱化草地土壤水盐分布、物理特性及植被状况等相关指标的测定,探讨了起垄措施对重度......

南方红壤侵蚀退化区由于土壤侵蚀在均匀坡面上形成细沟、浅沟、切沟等不同规模的侵蚀沟,以及大小不等、形状各异的微地形。为研究......

The present research aims to investigate the geomorphological changes of the city lands due to the physical development ......

Structural characteristic of surface soil ground has great effect on the ground motion amplitude when earthquake happens......