Based on Tupu theory, this paper studied the.dynamic changes, conversion modes, expansion intensity and landscape attrib......

在确认"黄土也是古土壤"的前提下,对新近发现的位于黄土高原西北部的宁夏彭阳剖面进行了磁化率、粒度、色度、CaCO3等环境变化代用......