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21. If a forested area surrounding a stream is cleared of trees, what might happen?
(A) Increased import of nutrients to the soil
(B) Decreased rates of soil and rock weathering
(C) Increased run-off of water
(D) Decreased rates of chemical leaching
(E) Increased denitrification


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Uanuannnn 大三下 (2019/05/07)
去森林化,植物無法留住.....觀看完整★★...


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NAlexE 大二上 (2024/01/03)

Campbell課本中提及實驗性於分水嶺(watershed)去森林化(deforestation) 會增加水和礦物質流失
三年內,相對未去森林化的控制組,多流失了30~40%,明顯肇因自缺乏植被吸收和蒸散。
而溪流(creek)中的硝酸鹽(NO3-)增加了60倍,使其成為不安全飲用水。
保住這些養分也可以防止下游發生藻華 (algal blooms)

21. If a forested area surrounding a stream is cleared of trees, what might happen? ->主詞 forested area (A) Increased import of nutrients to the soil > 從土中洗走養分,應為Export
(B) Decreased rates of soil and rock weathering > 溪水沖刷強度++ (C) Increased run-off of water > 溪水洗走多餘的水 (D) Decreas...
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21. If a forested area surrounding a str..-阿摩線上測驗