热带海洋学报 ›› 2026, Vol. 45 ›› Issue (3): 109-121.doi: 10.11978/2025096CSTR: 32234.14.2025096

• 海洋生物学 • 上一篇    下一篇

红海湾电厂温排水对海域珊瑚群落的夏季热白化影响分析

杨冰1,2(), 袁涛萍1, 董俊德1, 江雷1, 钱江1, 杨清松1, 孙慧明1, 周炎武1()   

  1. 1 中国科学院南海海洋研究所, 广东 广州 510301
    2 中国科学院大学, 北京 100049
  • 收稿日期:2025-07-04 修回日期:2025-10-09 出版日期:2026-05-10 发布日期:2026-05-28
  • 通讯作者: 周炎武。email: zhouyanwu@scsio.ac.cn
  • 作者简介:

    杨冰(2001—), 女, 山东省滨州市人, 硕士研究生, 从事珊瑚礁生态学研究。email:

  • 基金资助:
    国家自然科学基金项目(42276160)

Effects of thermal discharge of power plants on coral communities in Honghai Bay, Guangdong Province

YANG Bing1,2(), YUAN Taoping1, DONG Junde1, JIANG Lei1, QIAN Jiang1, YANG Qingsong1, SUN Huiming1, ZHOU Yanwu1()   

  1. 1 South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China
    2 University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2025-07-04 Revised:2025-10-09 Online:2026-05-10 Published:2026-05-28
  • Contact: ZHOU Yanwu. email: zhouyanwu@scsio.ac.cn
  • Supported by:
    National Natural Science Foundation of China(42276160)

摘要:

珊瑚礁是生物多样性最高的生态系统之一, 具有巨大的社会经济价值。在海表温度(sea surface temperature, SST)上升的背景下, 造礁石珊瑚大规模白化的频度和强度日益加大, 其生存也面临严峻的危机。本文对红海湾海域开展2024年秋季生态调查, 有机整合太平岭核电厂和海丰火电厂温排水影响数值模拟、热周度(degree heating week, DHW)值分析, 讨论电厂温排水对珊瑚群落的影响, 为核电厂选址及生态风险评估提供政策参考。调查结果显示, 在距离温排水排放口较远的6个岛屿周边共分布着5科9属13种石珊瑚以及5科7属7种软珊瑚, 不同站点之间的珊瑚覆盖率存在较大差异(0.30%~36.38%)。白化风险预测结果表明, 温排水引发的海水升温夏季1℃影响范围进入芒屿岛珊瑚分布区, 未进入其他珊瑚分布区; 冬季2℃影响范围未进入海域珊瑚分布区。在常规气候年, 温排水对鸡心石附近珊瑚造成的影响在珊瑚的正常耐受范围之内。而在芒屿岛, 即使在常规水温的年份, 温排水也会使海水的DHW升高到4℃-周以上, 造成珊瑚白化的风险; 但进入秋季以后, SST逐渐降低, 珊瑚白化是有可能恢复的。综上, 在常规气候年, 电厂温排水对周边海岛珊瑚影响有限, 正常情况下不会对珊瑚群落造成明显不利影响。但是, 在夏季厄尔尼诺(El Niño)引发的海洋热浪期间, 温排水则会加剧海洋热浪对鸡心石和芒屿岛珊瑚的不利影响。须进一步加强科学监测与数据收集, 建立预测模型, 持续跟踪温排水对红海湾珊瑚生态的长期影响。

关键词: 红海湾, 珊瑚白化, 温排水, 热周度, 电厂

Abstract:

Coral reefs constitute ecosystems with exceptional biodiversity, contributing substantial economic value to society annually. Rising sea surface temperatures (SST) have led to a marked increase in the frequency and severity of coral bleaching events, posing a grave threat to the survival of reef-building corals. To assess the impact of thermal discharge from power plants on coral communities, an ecological survey was conducted in the Honghai Bay area during autumn 2024. This study integrated numerical simulations of thermal discharge from the Taipingling Nuclear Power Plant and Haifeng Thermal Power Plant with Degree Heating Week (DHW) analysis. The findings offer a policy-oriented reference for the siting of nuclear power plants and ecological risk assessment. The survey revealed that six islands, situated at a considerable distance from the thermal discharge outlets, harbored a diverse range of coral species, including 13 species of stony corals (belonging to 5 families and 9 genera) and 7 species of soft corals (spanning 5 families and 7 genera). Coral coverage varied considerably among different sites, ranging from 0.30% to 36.38%. Bleaching risk predictions indicated that the 1°C seawater warming induced by thermal discharge in summer extended into the coral distribution area of Mangyu Island but did not affect other coral habitats. Conversely, in winter, the 2°C warming had no effect on any coral distribution zones. Under typical climatic conditions, the impact of thermal discharge on corals near Jixinshi Island remained within their normal tolerance thresholds. However, even in years with average water temperatures, thermal discharge elevated the DHW in Mangyu Island’s waters by more than 4°C-weeks, thereby increasing the risk of coral bleaching. Nonetheless, as SST gradually declines in autumn, coral bleaching may begin to recover. In summary, the influence of power plant thermal discharge on coral communities around the islands in Honghai Bay is limited and generally does not cause significant adverse effects under normal circumstances. However, during summer marine heatwaves triggered by El Niño, thermal discharge exacerbates the adverse effects of marine heatwaves on corals in Jixinshi Island and Mangyu Island. It is imperative to strengthen scientific monitoring and data collection, continuously assess the long-term impacts of thermal discharge on coral ecosystems across different areas of Honghai Bay, and establish data models to predict future risks.

Key words: Honghai Bay, coral bleaching, thermal discharge, Degree Heating Week (DHW), power plant

中图分类号: 

  • Q178