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1.
水质常规监测采样频率确定方法研究   总被引:2,自引:0,他引:2  
对安徽省淮河蚌埠闸以上干流2个水质监测断面的水质监测资料用偏差分析的方法,研究确定水质常规监测采样频率的方法。对1998年以来淮河蚌埠闸以上干流和颍河干流安徽段7个监测断面的水质常规监测数据进行了正态性检验,并对1998年以来的12个监测断面水质常规监测数据用统计学的方法,研究确定水质常规监测采样频率的方法。  相似文献   

2.
水质监测采样频率计算方法探讨   总被引:1,自引:1,他引:1  
水质监测频率计算是水质监测工作中重要的基础工作。确定合适的采样频率,即能满足监测目的的要求,又可以减少工作量,节省物力财力。根据邢台市饮用水水源井水质监测试验数据,采用统计学的方法进行水质采样的频率计算,该计算方法以年为计算时段.依据水体中物质含量变化幅度大小。确定相应的采样频率。用该方法计算的水质采样频率,可为制定水质监测方案提供参考依据.避免制定水质监测方法的盲目性和不确定性。  相似文献   

3.
Many studies focus on stream water temperature (WT) because it is considered a key ecological factor. However, few of them have investigated the use of WT data from water level monitoring networks, which often measure WT as ancillary data. Our study was conducted in southern Belgium at a high temporal resolution with continuous data recorded at intervals of 10 min between 2012 and 2016 and large spatial scale greater than 16,000 km2. This study aimed to assess whether a regional water level network (140 stations) is reliable for continuous WT monitoring based on a Bland–Altman analysis with WT collected through a European monitoring network (Water Framework Directive). This study also investigates whether WT data acquired by water level stations can be used to perform both state‐of‐the‐art visualization of thermal regimes and spatio‐temporal queries for specific ecological monitoring. We found that the water level stations were reliable tools in recording continuous WT in the streams of the study area. The temperature difference between the two WT monitoring networks was ?0.57°C on average. Our positive results promote the use of WT from water level stations in order to globally characterize the thermal regime of streams as well as to provide spatial or temporal information on this regime at high frequencies. As an example, our data showed the effectiveness for brown trout (Salmo trutta fario L.) in spatializing thermal risk areas related to the thermal requirement of this fish species; in 2015, 19% of stations located in brown trout fish zone recorded temperatures above 25°C.  相似文献   

4.
册田水质自动监测系统的建设与运行   总被引:5,自引:4,他引:1  
在省界断面和主要监测断面设立水质自动监测站,对断面水质进行实时监控,具有十分重要的意义.文中主要介绍水利部\"21世纪初期首都水资源可持续利用规划\"建设项目--册田水质自动监测系统的组成和软件框架,详细介绍了系统的验收、运行和维护.册田水质自动监测系统采用了新式的取水方式,具有水质综合评价的高级应用功能及提供第三方软件开发等最新功能.该系统的建成可以有效控制水库污染、保证首都人民用水安全.  相似文献   

5.
水情自动监测系统是通过及时收集上游雨量、水位等水文信息进行分析,提前获得水情预报,在水文水资源监测自动化、现代化建设中发挥积极的作用。该系统在牡丹江流域防汛使用过程中设置合理、性能稳定、运行可靠。  相似文献   

6.
对河津禹门口冲洪积扇水源地地下水动态及水质进行分析,提出了进一步加强水源地地下水环境保护的建议。  相似文献   

7.
论市县水利工程质量管理体制建设   总被引:2,自引:0,他引:2  
“百年大计,质量第一”是工程项目建设的永恒主题。要本着对人民、对历史高度负责的态度,来认识和重视水利工程建设的质量和安全,把质量和安全作为政府行政主管部门管理工程建设的核心来抓,并紧紧围绕这个核心建立健全水利工程质量管理体制,着重探索了市县水利工程质量监督机构的设置和职能问题。  相似文献   

8.
地表水环境监测进展与问题探讨   总被引:11,自引:0,他引:11  
分析水环境监测的进展情况,对目前水环境监测网络、监测项目、监测方法及水环境标准进行总结;阐述各项水环境监测技术包括理化监测、生物监测、遥感监测的进展状况,分析水环境监测中存在的监测项目缺乏针对性、监测管理没有统一性等问题,提出未来的发展方向。  相似文献   

9.
介绍了上海浦东新区太阳能小型无人值守水质自动监测系统的特点、组成和软件框架,同时对水质自动监测数据和实验室分析数据进行了比较分析,表明两者之间有很好的相关性和对比性.太阳能小型无人值守水质自动监测站体积小、功能强、投入少、维护量小,适用于不同水体的长期连续在线监测.  相似文献   

10.
基于集对分析多元模糊法的湖泊水质评价   总被引:1,自引:0,他引:1  
针对湖泊水质评价中存在模糊性的特征,应用集对分析多元模糊法建立湖泊水质评价模型,并对西湖和青海湖的水质进行评价,西湖和青海湖的水质分别为Ⅴ类和Ⅲ类。应用实例表明该模型严谨、简洁方便、有效可行,能较好地应用于生产实际。  相似文献   

11.
    
The Tigris is one of the most important transboundary rivers in western Asia and originates in the Toros mountains of the Eastern Anatolia region of Turkey. Multivariate statistical techniques, such as cluster analysis (CA), principal component analysis (PCA) and factor analysis (FA), were applied for the evaluation of temporal/spatial variations and the interpretation of a water quality data set for the Tigris River, which was obtained during 1 year of monitoring. This study presents the usefulness of multivariate statistical techniques for the evaluation and interpretation of complex water quality data sets and apportionment of pollution sources/factors to obtain better information about water quality and the design of a monitoring network for the effective management of water resources. Hierarchical CA grouped 12 months into two periods (the first and second periods) and classified seven monitoring sites into three groups, that is, less polluted sites, medium polluted sites and highly polluted sites, based on similarities in the water quality characteristics. PCA/FA identified five factors in the data structure, which explained 77.5% of the total variance of the data set. This allowed us to group the selected parameters according to common features and to evaluate the influence of each group on the overall variation in water quality. Varifactors obtained from the factor analysis indicated that the parameters responsible for water quality variation were mainly related to soluble salts (natural), organic pollution and nutrients (anthropogenic). Copyright © 2011 John Wiley & Sons, Ltd.  相似文献   

12.
水质远程监控系统的建设已成为水质监测现代化发展的必然要求,我国正逐步试点和推广.从水质远程监控系统的概念和国内外发展现状出发,探讨了流域层面建设水质监控系统框架、逻辑结构、视频传输、监控参数等方面的若干技术问题,为更好地推动水质监控系统的发展提供建设思路.  相似文献   

13.
固城湖是长江下游受闸站调控的重要通江湖泊,在水量调蓄、城乡供水、农业灌溉、水产养殖及维系生态平衡方面具有重要作用。分析了固城湖2014—2020年水文情势和湖泊水质变化特征,探讨了水文情势对固城湖水质变化的影响。研究结果表明:(1)固城湖水文情势受水阳江入流、降水及闸站调控、临时泵站补水等共同作用,相比于多年平均水位,近年来冬春季水位抬高近2 m,全年最低水位出现时期由冬春推迟到初夏,湖泊天然水文情势已发生改变;(2)固城湖总氮、总磷、氨氮、高锰酸盐指数质量体积分数多年平均值分别为0.90、0.04、0.16和4.00 mg/L,叶绿素a质量体积分数为0.01 mg/L,水体氮磷营养盐浓度和高锰酸盐指数呈下降趋势,叶绿素a浓度和营养指数呈上升趋势,湖泊由中营养向富营养状态过渡;(3)入湖水量与透明度呈极显著负相关关系,和总磷浓度、叶绿素a浓度、营养指数呈显著正相关关系,月平均水位和高锰酸盐指数、氨氮浓度、总磷浓度呈显著正相关关系。受闸站控制的水文情势变化是固城湖水质变化的重要驱动因子。建议进一步提高固城湖水资源调控能力,保障枯水期和极端干旱条件下生产、生活和生态用水需求;加强流域水体污染防治,提升入湖河流水体水质。  相似文献   

14.
分质水量综合评价方法的研究及应用   总被引:3,自引:0,他引:3  
以淮河干流和主要支流沙颍河为研究区域,在现有水质监测站网和监测频次的基础上,结合水量变化过程分析水质的时空分布规律,探讨分质水量的综合评价方法。以研究区域的水质、水量和污染源资料建立水质模型(Mike11-WQ),用模拟的水质过程与实测水量结合评价分质水资源量;对比逐日水质资料与不同监测频次(每月1次和每旬1次)的实测水质资料,分析分质水量评价的精度与可行性;通过不同方法的应用效果分析与比较,对有关问题进行讨论。  相似文献   

15.
尽管河道整治工程设计具有明确的设计原则,但是如何判别一个确定的整治线是否满足设计要求,仍是河道整治中难以确定的问题之一。作为尝试,文中基于对水流动力轴线、自然岸线、堤防线等河势特征曲线进行系统的频率分析,提出了可用的相关判定参数。  相似文献   

16.
近年来,太湖流域的水污染问题受到极大的关注,水量水质监测站在监控和改善太湖流域的水环境中起着举足轻重的作用。介绍了太湖流域水质自动监测站的建设情况,分析了2008年引江济太期间常熟等5个自动监测站的监测数据,并对监测站的重要性进行详细的分析和评价。由监测数据得知,5个自动监测站水质总体上有所改善。为进一步改善太湖流域的水质,建议加大监测站的建设和优化力度,加强监测站之间和监测站与水量控制单位的联动性。  相似文献   

17.
水质自动监测技术综述   总被引:7,自引:0,他引:7  
目前水质监测仪器由于应用了现代传感技术、计算机技术和通信技术进行全自动远程监测,使得水质监测向全天候、高速、实时、网络化、智能化方向发展。简要介绍水质监测技术,内容包括水质监测仪器综述、水质监测常用分析方法的种类、计算机在水质监测中的应用等。  相似文献   

18.
    
The Clean Water Act of 1972 is credited with improving water quality across the USA, although few long‐term studies tracking hydrologic, chemical, and biological responses to cleanup efforts exist. The Trinity River of Texas was plagued by poor water quality for more than a century before passage of legislation to reduce point source pollution from the Dallas–Fort Worth (DFW) Metroplex. We tracked changes in components of flow regime; concentrations of ammonia, nitrate, phosphorus, and biochemical oxygen demand (BOD); and fish assemblage composition in three mainstem reaches during a 40‐year period (1968–2008) following implementation of a large‐scale cleanup initiative. Results suggest little change in flow regime components such as magnitude, timing, and rate of change among the three reaches during 1968–2008. Concentrations of water quality parameters declined through time and with greater distance from DFW, including the lowest concentrations in the reach downstream of a mainstem reservoir (Lake Livingston). Fish assemblage composition shifts correlated with attenuated nutrient and BOD concentrations, and species richness generally increased among all reaches. Native and intolerant fishes consistently increased through time among all three reaches, although lentic and non‐native species also increased downstream of Lake Livingston. Our findings suggest a revitalization of the Trinity River fish assemblage associated with reduced nutrient pollution in DFW (even among distant reaches) and also illustrate potential confounding factors such as stream impoundment and continued nutrient deposition that likely preclude complete recovery. Copyright © 2014 John Wiley & Sons, Ltd.  相似文献   

19.
针对水文信息实时监测的特点,依托北江水雨情自动测报系统数据库,结合Googlemaps产品,基于WebGIS技术进行B/s平台构建和应用开发。系统功能包括水雨情信息的实时动态监视、查询、发布,以及由用户自定义生成各种交互式动态报表。系统的研制提高水文、防汛等相关部门的工作效率和科学性,推动韶关水文信息化建设进程,拓宽WebGIS的应用领域。  相似文献   

20.
本文结合南城子水库除险加固应急工程建设需求,考虑到汛期洪水可能对水库防洪安全和大坝稳定造成的恶劣影响,将水文遥测、大坝监测、防汛会商等技术应用于水库安全管理保障信息体系中,集成预报、预警、分析、管理、会商等安全管理保障体系,实现水库安全的硬件监测支撑和软件应用平台服务的管理目标。  相似文献   

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