Natural soil fertility is dropping in many areas because of continuous industrial fertiliser and pesticide use, while the growth of algae is increasing in lakes because of the fertiliser run-off.

在很多地区，由于工业化肥和农药的持续使用，导致自然土壤的肥力正在下降，然而化肥的流入却导致湖泊中藻类生长得越来越快。

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Natural soil fertility is dropping in many areas because of continuous industrial fertilizer and pesticide use, while the growth of algae is increasing in lakes because of the fertilizer run-off.

在很多地区，由于工业化肥和农药的持续使用，导致自然土壤的肥力正在下降，然而化肥的流入却导致湖泊中藻类生长地越来越快。

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Algae and mosses are not only two common pioneer plants in the process of vegetation succession but also two groups with the highest biomass in the biological soil crust.

藻类和苔藓植物是荒漠植被演替过程中常见的两类先锋植物，同时也是生物结皮中生物量最大的2个类群。

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That means more nutrients in the soil, where it feeds food crops, and less in lakes and streams, where it feeds algae that sucks up oxygen and kills fish.

FORBES: The $8 Billion Bargain: How Watershed Payments Save Cities, Support Farms And Combat Climate Change