Congo River Flow and Rainforest Evapotranspiration

课文

1. The Congo River carries the world’s second-largest average discharge, yet its basin receives less rainfall than the Amazon does.

   刚果河的平均径流量居世界第二，但其流域降水量却少于亚马孙河流域。

2. This seeming paradox occurs because dense rainforest canopy recycles water constantly through evapotranspiration.

   这一看似矛盾的现象源于茂密雨林冠层通过蒸散作用持续循环水分。

3. Trees absorb groundwater and release vapor daily—up to 80% of regional precipitation originates from forest transpiration.

   树木吸收地下水并每日释放水汽——区域降水约80%源自森林蒸腾。

4. As moist air rises, it cools and condenses, causing frequent afternoon thunderstorms that refill rivers year-round.

   湿润空气上升后冷却凝结，导致午后雷暴频发，全年不断补给河流。

5. Without this green pump, dry seasons would be longer and river levels could drop by 30% or more.

   若失去这一‘绿色水泵’，旱季将延长，河流水位可能下降30%以上。

6. Deforestation disrupts this cycle, reducing local rainfall and increasing surface runoff that erodes fertile topsoil.

   森林砍伐扰乱该循环，减少当地降雨，并加剧地表径流，侵蚀肥沃表土。

7. Hydrologists use satellite data to track how evapotranspiration rates change when logging expands near tributaries.

   水文学家利用卫星数据追踪伐木向支流附近扩张时蒸散率的变化。

8. Even though the Congo Basin covers only 3% of Earth’s land, it holds 15% of its tropical forest carbon.

   刚果盆地仅占地球陆地面积的3%，却储存着全球15%的热带森林碳。

9. River gauges show stable flows during drought years—proof that intact forests buffer hydrological extremes.

   水文站数据显示，干旱年份河流流量依然稳定——证明完整森林能缓解水文极端性。

10. Conserving this ‘breathing forest’ remains vital not just for wildlife, but for continental-scale water security.

    保护这片‘会呼吸的森林’，不仅关乎野生动物，更关系整个大陆的水资源安全。