The element geochemistry behavior of Guanghan claypan indicated that it has the dry change tendency in the environment.
广汉亚粘土层的元素地球化学行为表明它是在变干趋势的环境中形成的。
The sample magnetic susceptibility curve as a climate and environment index can show the research area's change and reflect the process of dry and cold to warm and humid.
样品频率磁化率曲线作为一种气候环境变化的代用指标也可以说明研究区域气候环境的变化，反映了一种干冷向暖湿变化的过程。
The dry weather of the Northwest China is a background factor of ecological environment change, we shouldn't neglect it.
当然西北地区的干旱气候是环境变迁的背景因素，我们不应忽视它。
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