Sands modeling constrained by high-resolution seismic data

In the phase of field evaluation, the changing of interwell reservoir may be out of control if the geological model was built only on well data due to few existing wells. The uncertainty of the interwell reservoir interpolation based only on well data can be decreased by comprehensive utilization of geological, logging and seismic data, especially by using highly relative seismic properties from 3D seismic data adjusted by well point data to restrict interpolation of geological properties. A 3D-geological model which takes the sand body as the direct modeling object was built through stacking the structure, reservoir and water/oil/gas properties together in 3D space.     

水电站中长期优化调度风险分析及方法研究

本文针对水库调度的风险问题,将均值一次二阶矩法应用于水电站中长期调度的风险分析,并建立起风险分析模型。通过对万家寨水电站进行测试表明,该模型计算结果合理,能为风险决策提供合理可行的途径。     

南方湖库初春“水华”现象原因分析与对策

根据2004年3月海南省万泉河上游牛路岭水库“水华”事件调查监测结果，对此次“水华”现象发生原因进行了初步分析，并相应提出了防止“水华”现象再次发生的预防控制对策，对南方湖库初春“水华”现象控制有一定的借鉴作用．     

Mercury pollution in the Chongqing part of the Three Gorges Reservoir area and its remediation and prevention

Mercury pollution in the Three Gorges Reservoir area of P. R. China merits special attention. We investigated into the current situation in the Chongqing part of the Reservoir area, identified the pollution sources and proposed some suggestions for the remediation and prevention of mercury pollution in this area. Atmospheric mercury in Chongqing was mainly from coal burning and releases of mercury-containing products such as various types of lights and fever thermometers. Urban drainage in Chongqing and Changshou, and runoffs from the high mercury background area in the lower reaches of the Wujiang River contributed most of the mercury in the water of the Yangtze River. A majority of the blame should be laid on mercury and gold mining in the Wujiang valley. We suggested foresting sloping lands to relieve soil erosion and prevent mercury-bearing soil from running into rivers, educational activities to discourage use of mercury-containing products and improved infrastructure to collect mercury-containing wastes for reducing mercury releases, more facilities for treating wastewater and solid waste to accommodate increased requirements of discharge, and growing selected perennial plants in mercury-contaminated land to absorb the mercury in soil. We also suggested concerted operation of a dedicated water-quality monitoring system, reinforced legislation and an effective administrative mechanism to ensure lasting efforts are invested in curbing mercury releases and restoring mercury contaminated land and water in the Reservoir area.     

2001 年至2010 年三峡库区重庆段植被活动时空特征及其影响因素

利用2001年-2010年的MODIS陆地产品MODl3A3NDVI数据对三峡库区重庆段近10年来的植被生长状况及其影响因素进行分析,结果表明：①三峡库区重庆段东部、中南部中高山区NDVI较高,西部川东平行岭谷区,长江干流及其支流谷地NDVI较低;地形和人类建设活动成为主要的影响因素;②近10年来三峡库区重庆段植被活动总体上呈逐渐增强的趋势;③研究区植被活动出现极化的趋势,植被稀疏的区域植被活动进一步减小,植被茂密的区域植被活动保持稳定或增强,夏季最为明显;（D研究区6种植被类型中,阔叶林的NDVI最高,为0．6904;水生植被的NDVI最低,为0．5710。草甸和灌丛、灌草丛两种植被类型增长最为迅速,分别为0．6％和0．48％;⑤地形、坡度和地形起伏度是影响三峡库区重庆段植被生长状况最为重要的因素,三个因素从根本上决定了植被的空间分布与变化轨迹。其中,地形起伏是坡度与地形起伏度形成的充分条件,成为最根本的决定性影响因素,同时,人类活动已经成为该区植被退化的主要因素。     

三峡库区水质污染趋势分析

季节性肯达尔流量检验是一种可以消除季节和流量影响的水质趋势分析的方法。本文介绍了该方法的基本原理,并运用其分析了三峡库区重庆段的水质变化趋势。结果表明,蓄水使库区水质短期内有所好转。蓄水对库区水质的长远影响因素太多,因此有待于进一步的研究。     

南水北调背景下丹江口库区旅游开发研究

南水北调中线工程给丹江口库区旅游开发带来了难得的机遇。面对机遇,要在保护库区生态环境,促进库区人民脱贫致富等原则指导下,按照＂一个龙头、两种境界、三条线路、四大主题＂的总体思路,进一步搞好库区旅游规划、开发和经营,库区旅游将实现经济效应、文化效应、社会效应的多赢。     

先觉庙水库清淤与水环境保护

先觉庙水库是随州市城区的主要水源地,因上游河道与库区淤积,使得水源地的水量、水质、水生态环境受到威胁.通过对水库水位、水量、泥沙的历史资料计算,分析水库供水水量的保障程度;比对监测库区天然状况和清淤试验现场的水质,分析了清淤作业对库区的水质影响时间和影响范围,最后提出相应的水资源保护措施.     

中小型水库清淤措施研究进展

在水库的运行过程中,随着水库上游和周边泥沙的汇入,水库的淤积是不可避免的。本着减少水库淤积的思想,介绍了现今正在使用的各种水库清淤技术措施,这些措施主要适用于小型水库。     

松华坝水库流域非点源污染景观空间负荷

为保障松华坝水库流域的饮水安全,促进滇池流域水污染的防治工作,本文以非点源污染为研究对象,通过专家打分法分析不同景观在该流域非点源污染形成中的贡献,并确定各“源”、“汇”景观的比重,以景观空间负荷对比指数为基础,分别从流域整体与各景观空间要素2个方面,定量研究了流域景观格局与非点源污染的关系。结果显示：①松华坝水库流域整体和各空间要素层面的4个景观空间负荷指数值均小于0.50,表明流域在整体和各景观空间要素层面,均属于“污染截留型”景观格局,即理论上由当前景观格局新产生并排出的非点源污染物极少;②坡度景观空间负荷指数>相对高程景观空间负荷指数>距离景观空间负荷指数,表明加强保护该流域中高海拔陡坡地带的“汇”景观,不仅可以防止形成新的“污染贡献型”景观格局,还可强化其隔离圈式“污染截留型”景观格局,有效阻挡流域中面积最大的“源”景观,位于中高海拔山区的旱地所产生的土壤和养分外流。