mekong-eco Environment

3 个科学问题 · 环境生态 Environment

本页目录

湄公河为什么被称为"亚洲的多瑙河"?

Why is the Mekong called "the Danube of Asia"?

它流经六国、滋养着巨大的三角洲与渔场,是数千万人的血脉;同一条河串起多国生态与生计,重要性堪比多瑙河在欧洲的角色。
Flowing through six countries and feeding a vast delta and fisheries, it's the lifeline for tens of millions—one river tying many nations' ecology and livelihoods, like the Danube in Europe.
难度 进阶 · 适合 大众 CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source

左玉辉 主编,《环境学》第2版,高等教育出版社,2009

Zuo Yuhui ed., Environmental Science, 2nd ed., Higher Education Press, 2009

#湄公河 #跨国河流 #渔场

湄公河上游建水坝,为什么会让下游渔获减少?

Why do upstream Mekong dams reduce downstream fish catches?

大坝阻断了鱼类洄游通道,并改变了天然的洪枯节律;下游依赖涨水繁殖的鱼类少了"信号",渔获随之下降,影响千万人的餐桌。
Dams block migration and flatten the natural flood-pulse; fish that breed on rising water lose their cue, so catches fall—affecting millions of dinner tables.
难度 进阶 · 适合 高中(15-18) CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source

左玉辉 主编,《环境学》第2版,高等教育出版社,2009

Zuo Yuhui ed., Environmental Science, 2nd ed., Higher Education Press, 2009

#水坝 #洄游 #渔获

湄公河三角洲为什么在"下沉"?

Why is the Mekong Delta "sinking"?

上游水坝拦截泥沙、三角洲过度抽取地下水,地面沉降速度超过海平面上升;原本靠泥沙补给的平原失去"进补",海水倒灌随之加剧。
Upstream dams trap sediment while excessive groundwater pumping causes subsidence faster than sea-level rise; the plain loses its sediment "top-up," worsening seawater intrusion.
难度 进阶 · 适合 高中(15-18) CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source

左玉辉 主编,《环境学》第2版,高等教育出版社,2009

Zuo Yuhui ed., Environmental Science, 2nd ed., Higher Education Press, 2009

#地面沉降 #采砂 #海水倒灌