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
独立核验依据 · Independent verification: 核验依据 1 ARCHIVE 标识 isbn_2900131015677:The atmosphere : an introd
#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