【题目】通常把地球上的__________资源称为水资源。____________和____________是我国主要的淡水资源。
【答案】淡水 河流水 淡水湖泊水
【解析】
根据地球上的水,97%是海洋水,而人类所需的淡水资源仅占全球水量的2.5%;目前人类利用的淡水资源,主要是江河湖泊水和浅层地下水。我国水资源的时空分布情况受我国降水的影响,我国降水空间上来说从东南沿海向西北内陆降水逐渐减少,导致我国水资源东多西少、南多北少;我国水资源时间分配上具有夏秋多,冬春少和年际变化大的特点,进行分析解答。
通常把地球上的淡水资源称为水资源,我国主要的水资源是江流水、淡水湖泊水和浅层地下水。我国水资源的时空分布情况受我国降水的影响,夏秋季降水丰沛,河流处于汛期,水资源较为丰富,但容易造成涝灾害; 春冬季降水少,河流处于枯水期,水资源相对不足。
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