地理漫步·世界地理英语30篇（4）

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尤卡坦半岛：喀斯特水文与天坑主导的淡水供给系统

The Yucatán Peninsula lacks surface rivers due to its porous limestone bedrock.
Rainwater rapidly infiltrates through fractures, forming extensive underground aquifers and caverns.
Cenotes—natural sinkholes—are windows into this subterranean water network.
These features result from limestone dissolution and roof collapse over millennia.
Cenotes vary in size, depth, and connectivity, creating localized freshwater oases in dry seasons.
Their spatial distribution reflects underlying joint patterns and regional groundwater flow directions.
Maya civilization strategically settled near cenotes for reliable water and ritual significance.
Modern tourism and agriculture now strain aquifer recharge rates across the peninsula.
Saltwater intrusion threatens coastal cenotes as sea levels rise and pumping increases.
This karst landscape demonstrates how geology dictates hydrological accessibility and human settlement patterns.