粗放型农业和无节制的伐木加剧了长江河床附近地区的水土流失，使长江携带的泥沙量排名全世界第四。
Extensive farming and unrestricted logging along the Yangtze's banks have increased the earth'serosion into the river, making it the fourth largest sediment carrier in the world.
但是森林就能够阻止水土流失，使气温下降。
But the forests can prevent water loss and soil erosion, and cool off the global temperatures.
彻底保护水土流失，使各种植物生长旺盛，根茎发达。
Completely stopping the soil erosion, which les various plants to grow vigorously.
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