摘要
梁子湖是湖北省第二大淡水湖,了解梁子湖水质的时间变异性和空间变异性,对梁子湖区及周边城市建设具有重要意义。以春、夏、秋、冬4次采样得到的样本数据为研究对象,利用地统计分析方法,分析了总氮(TN)、总磷(TP)、氨氮(NH_4^+-N)和高锰酸盐指数(COD_(Mn))4个水质因子的时空特性。结果发现:水体中TN浓度的年变化特征为冬季高于春季,北部较高;TP浓度季节变化较小,从东到西呈片状降低;NH_4^+-N浓度夏季低于冬季,冬季个别区域高于秋季,总体趋势是东高西低;COD_(Mn)在冬春两季较低,而夏秋季节较高,主要集中在西梁子湖和东梁子湖中部。在时间上,梁子湖冬春季水质优于夏秋季;在空间上,梁子湖区中心水质较好,东梁子湖和入湖口附近水质较差。
Liangzi Lake is the second largest fresh water lake in Hubei Province. It is of important significance to understand the temporal and spatial variation of the lake water quality for construction of Liangzi Lake and neighboring cities. The sampling data of water quality during spring,summer,autumn and winter were studied,and the geostatistical analysis used to analyze the temporal and spatial characteristics of water quality factors,including total nitrogen（ TN）,total phosphorus（ TP）,ammonia nitrogen（ NH4＋-N） and permanganate index（ CODMn）. The results showed that the TN concentrations in water in winter were higher than the spring,with higher values in north area. The overall annual variation of TP was small,decreasing from east to west. The NH4＋-N was higher in winter compared with summer,decreasing from east to west,and in individual regions the concentration was higher in winter than in autumn. The CODMnwas generally low in spring and winter and higher the summer and the autumn,mainly in the middle of the western and eastern lake. Therefore,temporally the water quality in winter and spring was better than summer and autumn,and spatially the water quality was better in the center of lake but worse in the east estuary of the lake and the lake inlets.
作者
王红
姚君兰
KUNG Hsiang-te
李兆华
李艳蔷
梅新
陈红兵
WANG Hong YAO Junlan KUNG Hsiang-te LI Zhaohua LI Yanqiang MEI Xin CHEN Hongbing(Faculty of Resource and Environmental Science, Hubei University, Wuhan 430062, China Hubei Key Laboratory of Regional Development and Environmental Response, Wuhan 430062, China Department of Earth Sciences, University of Memphis, Memphis 38152, USA)
出处
《环境工程技术学报》
CAS
2017年第2期161-167,共7页
Journal of Environmental Engineering Technology
基金
科技部科技惠民计划项目(S2013GMD100042)
湖北省科技支撑计划项目(2015BCA294)
