引用本文:黄国情,吴时强,周杰,吴修锋,周冬卉.太湖蓝藻生境对气候变化的响应[J].水利水运工程学报,2014,(6):39-44
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太湖蓝藻生境对气候变化的响应
黄国情, 吴时强, 周杰, 吴修锋, 周冬卉
南京水利科学研究院 水文水资源与水利工程科学国家重点实验室
摘要:
近年来太湖蓝藻暴发已成为重要水污染事件,是太湖面临的重大水安全问题,气候变化因素加剧了其严重性。为了预测未来由于气候变化对太湖蓝藻暴发的影响,并提出应对气候变化的策略,开展了蓝藻生境对气候变化响应关系的研究。基于大量实测气象资料的统计分析与气候变化情景计算,总结分析了近50年来太湖流域气候变化呈现出气温增高、风速略有下降、日照减少、降雨增多、湿度降低等趋势。气候变化是太湖蓝藻水华暴发的重要影响因素,其中气温与风速变化是影响太湖藻类生长的敏感气象因子。气温升高导致的蓝藻暴发风险平均10年将增加约2%,风速降低导致蓝藻水华暴发的风险平均每5年增加约3.5%。结合蓝藻对敏感因子响应关系的试验结果,提出了截污减排、适当清除底泥、打捞蓝藻、调水引流、修复生态等应对措施。
关键词:  气候变化  太湖  蓝藻暴发  应对措施
DOI:
分类号:X524
基金项目:国家水体污染控制与治理科技重大专项(2012ZX07506-003);水利部公益性行业科研专项项目(201301041);中央级公益性科研院所基本科研业务费专项资金(Y110005,Y114002)
Response of blue-green algae habitat in Taihu Lake to climate change
HUANG Guo-qing, WU Shi-qiang, ZHOU JIe, WU Xiu-feng, ZHOU Dong-hui
State Key Laboratory of Hydrology Water Resources and Hydraulic Engineering, Nanjing Hydraulic Research Institute
Abstract:
In recent years, the algae blooms in the Lake Taihu has become an important water pollution event and major water safe problems, aggravated by a factor of climate change.In order to predict the influence of future climate change on the blooms of blue algae in the Lake Taihu, and propose the responding strategy, a research on climate change the corresponding relationship of cyanobacteria habitat was carried out. Based on a lot of measured meteorological data and climate change scenario calculations, the trend on climate change for recent 50's years of the Lake Taihu Basin is obtained with increasing in air temperature, slight decreasing in wind speed, reducing in sunshine time, increasing in rainfall and decreasing in humidity. The main factors of climate change on blue-green algae blooms in Lake Taihu are the variations in air temperature and wind speed. The risk of blue-green algae blooms is rising per 10 years on approximately 2% caused by air temperature increases and every 5 years on about average 3.5% caused by wind speed decreases. Combined with experimental responses of blue-green algae to the sensitive factors, some response measures are suggested including cutting pollution abatement, removing sediment appropriately, blue-green algae salvage, water diversiondrainage, ecological restoration etc.
Key words:  climate change  Lake Taihu  blue green algae blooms  response measures
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