图7示意某地区1月份日照时数分布。日照时数等值线单位为小时,相

图7示意某地区1月份日照时数分布。日照时数等值线单位为小时,相邻等值线的差值为20小时。按图示方法在图中标注出另外三条日照时数等值线的数值,并说明理由。(10分)

答案

答案: 如图。(2分)

    该地区(地处热带季风气候区)1月份盛行东北风(2分)。图示地区山峰以南、以西为背风坡(2分)。迎风坡多阴雨天气,日照时数低(2分)。背风坡少雨,多晴暖天气,日照时数高(2分)。


解析:

该题涉及等值线的判读与应用、日照时数的差异分析。

综合考察考生分析问题、解决问题、阐释规律的能力。

需注意:相邻两条等值线的数值或者相同或者相差一个等差值。

判读图中各等值线的递变规律或趋势是该题的关键;注意题干有效信息提取:一月份、冬季风、山脉、山脉西南、山脉东北、迎风坡、背风坡、降水与阴雨状况。

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