加快水利基础设施建设助推新阶段水利高质量发展

文章围绕推进水利高质量发展这个主题,以全面提升国家水安全保障能力为 目标,紧密结合水利工程建设实际,深刻把握"十四五"时期水利建设工作面临的新任务新要求,明确提出"十四五"时期水利工程建设工作的总体思路、重点工作和措施.     

践行新理念 谋求新作为 为率先全面建成小康社会提供坚实水利保障

在总结"十三五"水利工作和分析当前新形势、新要求的基础上,从理清"十三五"水利发展思路、找准"十三五"水利发展定位出发,谋划"十三五"水利新发展。并以推进水利现代化建设为总揽,以扎实做好防汛防旱抗台工作、大力推进农田水利建设、不断加强河湖与水利工程管理、全面深化水利改革、深入推进法治水利建设和科技创新、贯彻落实全面从严治党8个方面为关键点,部署落实2016年水利工作。     

江苏:奋力开启水利现代化建设新征程

2011年是"十二五"发展开局之年.江苏省水利工作以深入贯彻中央和省委两个"1号文件"和两个"水利会议"为契机,深入践行可持续发展治水思路,不断加强水利建设、强化水利管理、深化水利改革、创新水利发展,加快推进全省水利现代化建设进程.     

聚力谋广西发展 实干促水利跨越

<正>2013年,广西水利系统深入贯彻落实中央和自治区有关水利工作重大决策部署,坚持把保持水利投资增长作为重中之重,把创新水利体制机制作为根本动力,全力推进水利建设,不断深化水利改革,全面加强水利管理,水利改革发展各项工作取得了显著成效,为广西经济社会发展提供了强有力支撑。以"安全水利"为本,狠抓防汛抗旱工作。面对广西局部地区的春旱和夏旱以及14次洪涝灾害,坚持把保障人     

江苏省"十四五"水利科技创新发展体系探索

面对全省水利科技创新的新形势、新要求,制定"十四五"水利科技创新发展体系迫在眉睫.在总结"十三五"期间水利科技创新相关成就,判断全新形势和存在问题的基础上,分析下一阶段发展的重要领域及任务,从体制机制改革、载体建设、规范化管理、成果推广转化、科普教育宣传及对外交流合作等多方面构建今后水利科技创新的发展体系,旨在为提升江苏省水利科技创新政策提供参考.     

把握新形势创新争前列奋力开创水利规划计划工作新局面

文章全面总结了全省"十三五"期间和2020年水利规划计划工作,落实国家重大战略部署,统筹谋划"十四五"水利规划计划工作,并提出了2021年工作具体要点.     

广西:谱写“治水惠民兴水强桂”新篇章

2011年,广西治水兴水热潮涌动,水利事业迎来了加快发展新的春天.一年来,广西认真贯彻落实中央1号文件和中央水利工作会议精神,以制定出台相关配套政策为重点,以民生水利建设为核心,以重大水利项目推进为抓手,全力推进水利改革发展各项工作取得显著成效,为实现"富民强桂"新跨越提供了有力的水利支撑和保障.     

上海:抓住契机全面部署积极推进水利改革发展

2011年,上海市委、市政府把贯彻落实中央1号文件和中央水利工作会议精神作为加快转变经济发展方式、推动上海"四个中心"建设的重要契机,进行了全面动员和部署,目前各项水利改革发展工作正在稳步推进中.一是切实加强对水利改革发展工作的领导.①研究制定实施意见.中央1号文件出台后,上海市委、市政府印发实施意见,明确了今后5～10年上海水利改革发展的指导思想、目标任务、工作重点、配套政策和责任分工.     

水润平阳 福泽民生——临汾市水利发展改革开创新局面

十七大以来,党中央、国务院高度重视水利工作中央一号文件首次聚焦水利,召开了高规格的中央水利工作会,全力推进水利改革跨越式发展。山西省响应号召,结合实际,先行先试,积极推进山西大水网建设。临汾市积极贯彻落实十七大精神,按照中央决策围绕全省水利战略部署,深入推进"六水兴临"战略水利改革发展开创了新的局面。     

内蒙古:兴水节水管水加快水利发展

2011年中央1号文件出台后,2月22日内蒙古自治区党委、政府出台了《关于进一步加快水利改革发展的实施意见》.中央水利工作会议后,9月9日,自治区党委、政府召开全自治区水利工作会议,提出了"兴水是治本之策,节水是当务之急,努力向科学管水要效益"的新时期治水思路,再次对水利工作作出动员部署.自治区水利厅认真贯彻落实中央、自治区加快水利改革发展决策部署,采取有效措施,强力推进各项政策措施的落实.     

Application of the Distributed Hydrological Model,TOPNET, to the Big Darby Creek Watershed,Ohio, USA

Evaluation of the applicability and utility of watershed hydrologic models in different hydro-geologic and soil conditions is necessary for a range of spatial scales and to assess the utility of these models as watershed water resources management tools. This study presents the application of the hydrological model TOPNET to the Big Darby Creek watershed, Ohio, United States. It focuses on the simulation modeling of stream flow in the watershed based on meteorological data for the eight year period of 1992–1999. Visual comparison of time series plots and statistical measures namely, Nash-Sutcliffe efficiency (NS), coefficient of correlation (R²), and the percent bias (PBIAS) were used to assess the model performance. The statistical model evaluation results indicated that the model has a relatively high confidence and can give a good representation of the flow hydrographs for the watershed. For the calibration period simulations of annual stream flow were accurate with a mean R² and NS of 86% and 85% for the Big Darby at Darbyville gaging station. For the little Darby at West Jefferson gaging station a mean R² of 81% was obtained while the NS averaged 78%. Further analysis based on the aggregation of the water years into wet seasons and dry seasons, the model was also able to adequately simulate stream flow for both gaging stations and for both low flow periods and high flow periods. Statistical analysis for the validation period also yielded high R² values of 88% and 83% for the Darby at Big Darby at Darbyville gaging station and Little Darby at West Jefferson gaging station respectively. The worst PBIAS obtained for both calibration and validation period was 18% and this is better than recommended values for satisfactory daily simulations of ±25% for PBIAS. The encouraging simulation results obtained in this study shows the utility and usefulness of the TOPNET model in hydrological modeling and ultimately as a water resources management tool.     

采用新材料 提高工程质量 降低工程成本

北京市怀柔应急备用地下水源工程,由21对水源井、14.4km输水管线、地下水回灌3部分组成,是集电气、机械、自动化、通讯为一体的技术密集型产业.该工程于2002年9月开工,2003年8月30日正式向北京输水,年产水1.2亿m3,日产水33.5万m3,工程通水后为缓解北京水资源紧缺的现状起到了重要作用.不仅取得了一定的经济效益,而且还取得了巨大的社会效益和政治效益.     

Effects of drought on the physicochemical,nutrient, and carbon metrics of flows in the Savannah River,Georgia, USA

Hydrological drought has wide-ranging impacts on water quality, nutrient and carbon metrics, and given the uncertainty of climate change and the predicted increased frequency and intensity of drought in the future, investigations into changes induced by drought become increasingly important. This study compared physicochemical parameters (temperature, conductivity, pH and DO), nutrients (TN, NO_X [NO₂ + NO₃], NH₃ and TP) and carbon (TOC and DOC) between hydrological drought conditions (2006–2008) and hydrological normal conditions (2016–2019) at five sites along the lower Savannah River (Georgia, USA). Although we had predicted that water temperatures would increase from drought, we instead found temperature was significantly lower during drought conditions. Levels of pH and DO were significantly higher during drought. Further, TN, TOC and DOC concentrations were significantly lower during drought, but NO_X concentrations were significantly higher during drought. Conductivity varied at the lower river sites, being significantly higher during drought at sites located below the city of Augusta, GA. These complex changes could be attributed to volume reductions coupled with an increase in the percentage of total flow originating from groundwater as well as limnetic reservoir inputs, persistent point source pollution, reduced natural catchment inputs and/or reduced floodplain interactions. The changes that occurred during drought may be disruptive to aquatic life, not only from reduced water quantity but also due to a scarcity of some biologically essential materials and lower food resources, combined with artificially high levels of some other potentially stressful materials.     

Investigating the invasion of the nonindigenous zooplankter, Eubosmina coregoni, in Lake Winnipeg,Manitoba, Canada

The spread of nonindigenous species (NIS) over land and via interconnecting water bodies is threatening aquatic ecosystems worldwide. This study examines the invasion of the first known NIS zooplankter, Eubosmina coregoni, into Lake Winnipeg, Manitoba, Canada. Analyses of cladoceran microfossils from a sediment core collected in the North Basin of the lake indicate this species first appeared in sediments dated to the late 1980s. An increase in total cladoceran accumulation rates coupled with increasing N, C, P, and chlorophyll a over the last 40 years provides evidence of eutrophication. Extant samples from fall 2002-2005 indicate that E. coregoni is mainly restricted to the North Basin while Bosmina longirostris is present throughout the lake. Results from this study provide baseline data regarding the invasion and establishment of E. coregoni, a precursor to future NIS that may have substantial ecological and economic impacts on the Lake Winnipeg ecosystem.     

湘资沅澧“四水”资源综合管理和开发利用的思考与建议

文章针对湖南省湘资沅澧“四水”管理现状及问题，借鉴省外、国外流域管理利用模式和经验，探讨流域开发管理趋势，并提出综合管理及开发利用建议。