Climate Change and Classic Maya Water Management

The critical importance of water is undeniable. It is particularly vital in semitropical regions with noticeable wet and dry seasons, such as the southern Maya lowlands. Not enough rain results in decreasing water supply and quality, failed crops, and famine. Too much water results in flooding, destruction, poor water quality, and famine. We show not only how Classic Maya (ca. A.D. 250–950) society dealt with the annual seasonal extremes, but also how kings and farmers responded differently in the face of a series of droughts in the Terminal Classic period (ca. A.D. 800–950). Maya farmers are still around today; kings, however, disappeared over 1,000 years ago. There is a lesson here on how people and water managers responded to long-term climate change, something our own society faces at present. The basis for royal power rested in what kings provided their subjects materially—that is, water during annual drought via massive artificial reservoirs, and spiritually—that is, public ceremonies, games, festivals, feasts, and other integrative activities. In the face of rulers losing their powers due to drought, people left. Without their labor, support and services, the foundation of royal power crumbled; it was too inflexible and little suited to adapting to change.

水的极端重要性毋庸置疑。在干湿季分明的副热带地区，如玛雅南部低地，水资源的战略意义尤为凸显。降雨不足会导致供水缩减、水质下降、作物绝收与饥荒；而过量降水则会引发洪涝灾害、生态破坏、水质恶化，同样造成饥荒。本研究不仅阐明了古典玛雅（Classic Maya，约公元250–950年）社会如何应对年度季节性气候极端事件，还揭示了在终端古典期（Terminal Classic Period，约公元800–950年）遭遇一系列干旱时，玛雅君主与农民的应对策略存在何种差异。如今玛雅农民依然存续于世，但玛雅君主早已在千余年前销声匿迹。这一历史案例为我们揭示了民众与水资源管理者如何应对长期气候变化——而这正是当代人类社会正面临的严峻挑战。玛雅君主的权力根基，在于其为臣民提供的两类支持：物质层面，即通过大型人工水库在年度干旱期保障供水；精神层面，即举办公共仪式、竞技活动、节庆庆典、宴饮集会及其他凝聚社群的整合性活动。当君主因干旱丧失统治权力时，民众便会离去。失去了民众的劳力、支持与服务，君主权力的根基随之崩塌；这套统治体系过于僵化，难以适应环境变化。