在一些国家由地下水供给的水是仅有的可用水源。
In some countries the supply of water from underground can be the only source of water available.
如果人们大量利用额外土地，继续扩大肥料和杀虫剂的使用范围，进一步损耗日益减少的地下水供给的话，那将会是很容易的。
Easy, that is, if the world brings into play swathes of extra land, spreads still more fertilizers and pesticides, and further depletes already scarce groundwater supplies.
研究结果表明，红胶泥和风化岩沫土土壤地类主要位于沟谷两岸，地下水供给较为充裕，是浅根性树木生长发育的良好土壤类型；
The research indicates that red clay and mantle rock soil, which distribute both sides of gully and with rich groundwater, are better for shallow-root tree to grow.
有些地区由于土质、地形位置或与河流或地下水的距离，几乎没有水分能提供给植物，而另一些地区则有。
Some areas, because of their soil texture, topographical position, or distance from rivers or groundwater, have virtually no water available to plants, whereas others do.
从河流和湖泊中渗出的这种渗透水供给地下水源。
Such infiltration, which includes seepage from streams and lakes, contributes to the ground water supply.
由于荒漠盆地平原系统不产生径流，因此，地表水、浅层地下水和泉水、湖泊都必然地以相邻的山地系统为供给水源地。
The adjacent mountain systems are the water source areas of all the streams, shallow groundwater, springs, and lakes because runoff does not occur in the desert basin and plain systems.
由于荒漠盆地平原系统不产生径流，因此，地表水、浅层地下水和泉水、湖泊都必然地以相邻的山地系统为供给水源地。
The adjacent mountain systems are the water source areas of all the streams, shallow groundwater, springs, and lakes because runoff formation does not occur in the desert basin and plain systems.
由于荒漠盆地平原系统不产生径流，因此，地表水、浅层地下水和泉水、湖泊都必然地以相邻的山地系统为供给水源地。
The adjacent mountain systems are the water source areas of all the streams, shallow groundwater, springs, and lakes because runoff formation does not occur in the desert basin and plain systems.
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