desert Earth Science

3 个科学问题 · 地球科学 Earth Science

本页目录

为什么沙漠会扩大?

Why do deserts expand?

过度放牧和干旱使植被消失,土壤被风沙带走。
Overgrazing and drought strip vegetation, letting sand take over.
难度 进阶 · 适合 初中(12-15) CC BY 4.0 · 已核验 · Verified 2026-08-23
来源 · Source

Tarbuck & Lutgens,《Earth Science》第14版,Pearson,2015

E. J. Tarbuck and F. K. Lutgens, Earth Science, 14th ed., Pearson, 2015

#沙漠化 #植被 #干旱

地球上为什么会有沙漠?

Why are there deserts on Earth?

在副热带高压带或大山背风处,空气下沉、少雨,加上蒸发强,长期下来就变成了干旱的沙漠。
Under subtropical highs or behind mountains, air sinks and rains little while evaporation is high, gradually creating arid deserts.
难度 入门 · 适合 小学高段(9-12) CC BY 4.0 · 已核验 · Verified 2026-11-03
来源 · Source

卢特根斯、塔巴克《大气:科学导论》,Pearson,2011

Lutgens, F.K. & Tarbuck, E.J., The Atmosphere: An Introduction to Meteorology, Pearson, 2011

#沙漠 #副高

沙尘暴里的沙子、尘土都是从哪里来的?

Where does the sand and dust in a sandstorm come from?

主要来自干旱区裸露的戈壁、荒漠和干涸湖床,强风把疏松的沙尘卷上高空,一路吹到很远的地方。
Mainly from bare gobi, desert and dried lake beds; strong wind lofts loose dust high and carries it far.
难度 入门 · 适合 大众 CC BY 4.0 · 已核验 · Verified 2026-08-23
来源 · Source

Tarbuck & Lutgens,《Earth Science》第14版,Pearson,2015

E. J. Tarbuck and F. K. Lutgens, Earth Science, 14th ed., Pearson, 2015

#沙尘暴 #源区