摘要
基于岳阳市南湖的水质监测数据与同期的气象资料,对2004—2018年岳阳市南湖水质营养状况进行了综合评价,并用逐步回归方法建立了综合营养状态指数(TLI)气象因子预测模型。结果表明,岳阳市南湖水体整体处于轻度富营养水平。2004—2008年岳阳市南湖水质富营养化程度呈明显的上升趋势,2008年达到峰值并呈中度富营养状态;自2010年达到次峰值后,至2018年呈下降趋势。TLI月分布中,峰值出现在7月,谷值出现在10月。TLI与各气象因子的关系表明,TLI与气温、日照时数、风速显著正相关,与气压显著负相关。以月最低气压和月平均风速建立的TLI预报模型模拟效果较好。
Based on the water quality monitoring data of South Lake and the meteorological data in the same period,the water quality and nutrition status of South Lake in Yueyang city from 2004 to 2018 were comprehensively evaluated,and the meteorological factor prediction model of comprehensive nutritional status index(TLI)was established by stepwise regression method.The results show that the water body of South Lake in Yueyang city was at the level of mild eutrophication.From 2004 to 2008,the eutrophication degree of Yueyang South Lake water showed an obvious upward trend,reached the peak in 2008 and showed a moderate eutrophication state;After reaching the second peak in 2010,it showed a downward trend to 2018.In the monthly distribution of TLI,the peak appears in July and the valley appears in October.The relationship between TLI and meteorological factors shows that TLI was significantly positively correlated with air temperature,sunshine hours and wind speed,and negatively correlated with air pressure.The TLI prediction model based on monthly minimum pressure and monthly average wind speed has good simulation effect.
作者
覃鸿
杨伟
黄菊梅
王波
刘学
QIN Hong;YANG Wei;HUANG Ju-mei;WANG Bo;LIU Xue(Yueyang Meteorological Administration,Yueyang 414000,Hunan,China;Yueyang Ecological Environment Bureau,Yueyang 414000,Hunan,China;Yueyang Meteorological Bureau,Yueyang 414000,Hunan,China)
出处
《湖北农业科学》
2021年第S02期152-155,251,共5页
Hubei Agricultural Sciences
基金
湖南省岳阳市气象局2021年课题
关键词
岳阳市南湖
水质评价
富营养化
气象因子
逐步回归
South Lake water in Yueyang city
water quality evaluation
eutrophication
meteorological factors
stepwise regression
作者简介
覃鸿(1974-),女,广西容县人,高级工程师,主要从事气候影响评价和气象科技服务,(电话)18173052136(电子信箱)qh0126@163.com。
