为什么火山附近的土壤特别肥沃？
Why is soil near volcanoes especially fertile?
火山灰和熔岩风化成富含钾、磷等矿物的土壤，疏松透气又养分足，所以火山脚下常是良田。
Volcanic ash and lava weather into loose soil rich in potassium, phosphorus and more, making fertile farmland on volcanic flanks.
难度 进阶 · 适合 初中(12-15)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
舒良树 主编,《普通地质学》第3版(曾获全国首届优秀教材一等奖)
Shu Liangshu ed., General Geology, 3rd ed. (winner of the 1st National Excellent Textbook Award)
独立核验依据 · Independent verification: 核验依据 2 ISBN 9787116123892（豆瓣书目条目: 普通地质学）
#火山土 #肥沃
为什么会有温泉和火山？
Why are there hot springs and volcanoes?
地球内部很热：地下水沿地壳薄弱带被加热上涌形成温泉，岩浆被挤到地表则形成火山。
Earth's interior is very hot: where groundwater is heated and rises along weak crustal zones it forms hot springs, and where magma is pushed to the surface it forms volcanoes.
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
舒良树 主编,《普通地质学》第3版(曾获全国首届优秀教材一等奖)
Shu Liangshu ed., General Geology, 3rd ed. (winner of the 1st National Excellent Textbook Award)
独立核验依据 · Independent verification: 核验依据 2 ISBN 9787116123892（豆瓣书目条目: 普通地质学）
#地幔 #岩浆 #地壳