Polluted River Systems: Monitoring and Assessment of Ecotoxicological Risks     

G. Van der Velde  R. S. E. W. Leuven 《洁净——土壤、空气、水》1999,27(5):251-256

In the past chemical, ecological, and toxicological research was carried out in a separate way. Nowadays, more and more studies are undertaken considering these three approaches in an integrated way (triad studies). A sophisticated combination of chemical and biological monitoring and bioassays can improve water quality management of polluted rivers. Application of quantitative structure-activity relationships (QSARs), algorithms for mixture toxicity of known substances, chemical group parameters, and response-oriented sum parameters, may reduce uncertainties in ecotoxicological risk management.  相似文献   

胜利油田部分岸段岸滩演化和防护问题     

吴世迎  臧启运 《海洋科学进展》1997,(4)

本文在综合我所多年实地观测资料的基础上,讨论了黄河三角洲胜利油田所辖部分岸段岸滩演化和防护问题。认为岸滩演化主要受制于黄河尾闾变化和海动力的相互作用,预测了１９９６年汛期到来前黄河入海口由北汊１南侧人工改道后,岸滩发育的基本趋势和需要重视的问题。文章也讨论了防潮堤和有关海上设施的防护问题。  相似文献   

福建气象综合业务平台融入“天擎”技术方案设计及实现          下载免费PDF全文

余永城  王笑  魏夏潞 《气象科技》2022,50(5):653-659

为加快推进福建省气象业务系统的集约化、云化转型，需要依托福建气象大数据云平台（“天擎·福建”）对业务系统进行融入改造。本文介绍了“天擎·福建”的概况、总体架构和功能，重点阐述了福建气象综合业务平台融入“天擎”的技术方案及实现方法，从平台融入“天擎”、数据源切换至“天擎”、算法纳入加工流水线、数据产品存入“天擎”、系统监控进“天镜”、前端页面改造等6个方面实现了应用融入并投入业务运行，融入后综合业务平台的数据汇聚、加工和服务全流程进一步优化和规范，系统运行效率和访问速度显著提高，为其他的业务系统融入天擎提供借鉴。  相似文献   

What happens after climate change adaptation projects end: A community-based approach to ex-post assessment of adaptation projects     

《Global Environmental Change》2023

Over the last decade, hundreds of climate change adaptation projects have been funded and implemented. Despite the importance of these first-generation adaptation projects for establishing funders and implementors’ “best practices,” very little is known about how early adaptation projects have endured, to what ends, and for whom. In this article, I propose a community-based methodology for ex-post assessment of climate change adaptation projects. This methodology contributes to recognitional justice by asking the individuals and collectives tasked with sustaining adaptation initiatives to define adaptation success and what criteria for success should be assessed. I apply this subjective assessment approach in 10 communities across Ecuador that participated in an internationally funded adaptation project that concluded in 2015. My analysis draws together participatory mapping, walking interviews with local leaders, participant observation, and surveys with former project participants. The results highlight that even adaptation projects that were deemed highly successful at their closure have uncertain futures. I find that the sustainability mechanisms that were envisioned by project implementors have not functioned, and communities are shouldering the burden of reviving failing adaptation interventions. These findings highlight that the current model of episodic funding for climate change adaptation projects and evaluation processes needs to be revisited to acknowledge the long-term challenges faced by communities. This analysis also calls attention to the importance of ex-post assessment for adaptation projects and the potential of subjective assessment approaches for building more ontological and epistemological pluralism in understandings of successful climate change adaptation.  相似文献   

基于“天镜”的CIPAS3.0监控应用设计与实现     

刘乖乖  孙超  曾乐  刘北  顾文静 《气象科技》2023,51(6):907-916

本文通过分析“云+端”模式气候监测预测分析系统（简称：CIPAS3.0）的监控需求，给出基于气象综合业务实时监控系统（简称：天镜）CIPAS3.0监控应用架构和流程设计，详细描述了产品监视流程和数据源异常追溯算法，为下一步建设融入气象大数据云平台（简称：天擎）的业务系统通用监控提供了技术思路。CIPAS3.0监控应用实现了数据源、产品和基础资源的实时监视与告警，并提供数据源异常追溯、产品一键补算等功能，解决了数据源下载传输情况不透明、产品手工补算不方便等问题，减轻了运维人员定位和解决故障的工作量，提高了运维效率。本应用于2021年12月通过专家评审并投入业务化运行，截止目前已实现87种数据源和125种定时产品实时监控，为CIPAS3.0的稳定运行提供了保障。  相似文献   

卫星遥感监测城市扩展与环境变化的研究   总被引：2，自引：0，他引：2  

戴昌达  唐伶俐  陈刚  王杰生  杨幼昶 《遥感学报》1995,(1)

本文阐述应用北京地区自１９８４年至１９９２年４景秋季的ＴＭ图像，通过高精度几何配准，辐射水准归一化，热图像条纹噪声消除，各种干扰因素的识别．压抑、剔除，目标信息的增强、提取，以及背景影像的生成等图像应用处理，直接获得试区８年间城镇建设用地、绿地、水体，城市热岛等环境要素变化动态，快速制出客观反映城市扩展变化的系列图件。  相似文献   

一个示范性循环水养殖厂废水污染物的监测与特征分析     

曹西华  俞志明  刘鹰  李祥安  宋秀贤  袁涌铨 《海洋科学》2010,34(7):66-71

以示范性循环水养殖厂产生的废水为监测分析对象,采用在线连续监测和水样采集分析相结合的方法,观测了该养殖厂废水的化学特征,分析了影响水质的关键污染因子并探讨了其主要来源,同时对当前循环水养殖技术进一步发展亟需改进的关键技术环节进行了分析。结果表明,养殖废水中污染物的浓度与所养殖鱼的生长阶段相关;废水化学耗氧量变化受到其中悬浮物的影响,但化学耗氧量主要来源是水体中的溶解态物质;废水中的氮、磷污染物主要以溶解态存在,特别是无机形态。  相似文献   

海床基自动监测平台技术的研究应用   总被引：2，自引：1，他引：2  

孙思萍 《海洋技术学报》2003,22(3):81-84

介绍了海床基自动监测技术国内外进展，就海床基自动监测平台系统的关键技术进行了论述。海床基自动监测平台系统是携带众多海洋环境观测传感器在海底工作的、自容式综合测量装置。它可布设于河口、港湾或者近海海底，对悬浮泥沙参数、海洋动力参数、温、盐和水质进行长期、同步、自动测量；系统回收后，通过系统软件建立各种海洋动力条件下特别是大风浪条件下悬浮泥沙的运移规律；建立温、盐、水位、流速剖面和通量、水质的时空变化规律。将多个站点的监测数据进行综合处理建立起海洋水体交换生态环境的时空联系，为科学地管理、治理和利用海洋自然环境造福人们提供决策依据。  相似文献