中国北方地区人口密集，水源短缺，处于气候变化影响前线。
Heavily populated and short of water, northern China is in the front-line.
目前对中国北方地区农村家庭能源消费结构演变的研究较少。
There is scarce study on the evolvement of rural household energy consumption structure in Northern China at present.
中国北方地区地下水位下降，农民不得不改种耐旱、低产作物，甚至摞荒。
The underground water dropped in northern China, peasants has to plant dry-proof and low-yield products, even deserted.
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