因此，黄土-古土壤序列中元素含量的分布、化学综合参数等地球化学特征都对环境变化有直接的指示意义，代表了该区域化学风化的强度及时空规律。
Accordingly, the distribution of elements content and the chemical parameter all can show the variety of environment and intension of weathering in the Weihe Valley.
本文采用自然正交函数分解法对我国南方地区的降水气候序列与夏季（5～8月）逐日降水序列进行时空特征分析和对应天气形势分析。
In this paper the climatology of the precipitation, the daily rainfall series of months 5-8 and the correlative weather systems are analysed.
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