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Optimizing water resources allocation in the Haihe River basin under groundwater sustainability constraints

Journal of Geographical Sciences 2019年第6期29卷 935-958页

作者： grith martinsen LIU Suxia MO Xingguo BAUER-GOTTWEIN Peter Key Laboratory of Water Cycle and Related Land Surface Processes Institute of Geographic Sciences and Natural Resources ResearchCAS Department of Environmental Engineering Technical University of Denmark College of Resources and Environment/Sino-Danish Center for Education and Research University of Chinese Academy of Sciences Sino-Danish Center for Education and Research

This study applies a hydroeconomic optimization method for water resources management in the highly water stressed Haihe River basin. A multi-objective, multi-temporal deterministic hydroeconomic optimization model has been built to quantify the economic trade-offs and reveal "minimum cost strategies" when reducing groundwater abstraction to sustainable levels. A complex basin representation, with ～140,000 decision variables is formulated where each decision variable represents a flow-path from a water source to a sink. Available water sources are runoff generated by the sub-basins upstream the nine major surface water reservoirs, the inter-basin transfers from Yellow River and South to North Water Transfer Project(SNWTP) and the natural groundwater recharge to the three main groundwater aquifers. Water demands, i.e. sinks, are aggregated for each model sub-basin in categories of the major agricultural users, domestic, industrial and ecological water demands. Each demand is associated with a curtailment cost and groundwater abstraction with a pumping cost. Groundwater overdraft is constrained in each model scenario, ranging from unlimited overdraft in the plain area groundwater aquifer to sustainable abstractions over an 8-year period. Inflow upstream Yuqiao reservoir, and the inter-basin transfers from SNWTP and Yellow River are identified as the water resources with the highest increase in average shadow prices when limiting groundwater overdraft. An increase in inflow shadow prices of 37.5% indicates that these water sources will be most valuable if sustainable groundwater abstraction should be achieved. The shadow prices of water sources reveal when and where in the Haihe River basin users are curtailed if water resources are managed in the most optimal way. Average shadow prices of 1.6 yuan/m3 for all surface water sources in the sustainable abstraction scenarios shows that overdraft can be avoided by curtailment of users with a willingness-to-pay ≤1.6 yuan/m3.

关键词： Haihe River China hydroeconomic optimization linear programming groundwater sustainability spatio-temporal economic trade-offs decision support

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Floristic composition and structure of the Kibate Forest along environmental gradients in Wonchi,Southwestern Ethiopia

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Journal of Forestry Research 2021年第6期32卷 2669-2682页

作者： Misganaw Meragiaw Zerihun Woldu Vegard martinsen Bal R.Singh Department of Plant Biology and Biodiversity Management College of Natural and Computational SciencesAddis Ababa UniversityNational HerbariumP.O.Box 3434Addis AbabaEthiopia Faculty of Environmental Sciences and Natural Resource Management Norwegian University of Life SciencesP.O.Box 50031432ÅsNorway

Dry evergreen montane forests in Ethiopia are severely *** status of species composition and structure of forest vegetation are important indicators to understand the trends of threats on local plant *** the present study,we examined the floristic composition and structure of the Kibate Forest,Wonchi Highland,Ethiopia along environmental ***-six(30 m×30 m)plots were established every 100 m interval along altitudinal gradients(2811‒3073 m a.s.l.)in five transect lines for vegetation and environmental data *** total,125 vascular plant species belonging to 104 genera and 52 families were *** species(14%)were endemic to Ethiopia and *** two most dominant families,Asteraceae(29 species)and Lamiaceae(eight species)accounted for 30%of the total number of *** highest number of species(54%)was *** major community types(viz.,Olinia rochetiana-Myrsine melanophloeos,Ilex mitis-Galiniera saxifraga,Erica arborea-Protea gaguedi,and Hagenia abyssinica-Juniperus procera)were *** highest species richness,evenness,diversity,and importance value index were in community types 2 and *** 82%of the species and all endemic taxa except five were recorded in these two community *** most dominant woody species were ***,***,Olea europaea ***,Myrica salicifolia,*** ***,and *** with different patterns of population *** results show that there was a weak correlation between species richness and *** findings confirm that environmental variables both with interactions(such as altitude)and without interactions(such as livestock grazing)significantly(p<0.05)affect species *** activities and overgrazing by livestock appear to be the main threat in community types 2 and *** management practices and conservation measures such as prohibiting forest clearing and overgrazing and planting indigenous trees through commu

关键词： Endemic species Environmental gradient Floristic composition Kibate Forest Population structure Wonchi

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Eating Pork in China:the Political Ecology of the Chinese Hog Industry

Eating Pork in China:the Political Ecology of the Chinese Ho...

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作者： Helene G. martinsen 华东师范大学

学位级别：硕士

This paper explores the history of how the pork industry has developed in *** backyard farming systems,to an industrialized process focused on maximizing production and profit without considering the ecological *** environmental degradation caused by the industry can no longer be *** influencing factors for meat consumers to contribute to changing the sustainability of production are being *** consuming pork is being compared to breathing for many Chinese,the trends for meat consumption is slowly *** shift from fast economic development to increasingly caring about the environment is undergoing,which is why making people think about the food choices they take and the power each person has to contribute to a better environment for all of us is *** paper will look not only at the degradation pork production and consumption already has caused in China,but also what are the important factors in being able to implement change,both on governmental-and personal level.

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Dostoevsky in context

Dostoevsky in context

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作者： (editor.)martinsen Deborah A. (editor.)Mai虇orova O. E.

来源：南通市图书馆图书评论

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已出版文献中有关异常压力的综述:对研究压力封存箱的意义

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国外油气勘探 1998年第2期10卷 148-158页

作者： RandiS.martinsen 吴文旷石油大学(北京)盆地与油藏研究中心

异常压力现象作为研究的焦点已经历了近40年,迄令为止大多数的研究都与以下两方面有关:一是地层超压的探测;二是异常压力的产生过程。不均衡压实和烃类的生成/成熟两个过程基本上解释了世界范围内观察到的大多数超压岩石。由于异常压力... 详细信息

异常压力现象作为研究的焦点已经历了近40年,迄令为止大多数的研究都与以下两方面有关:一是地层超压的探测;二是异常压力的产生过程。不均衡压实和烃类的生成/成熟两个过程基本上解释了世界范围内观察到的大多数超压岩石。由于异常压力经常与欠压实岩石有关,因此许多不同的基于欠压实测量(包括地层压力测试)的技术被间接地用于探测异常压力。而地层压力测试只有在多孔、可渗透的储集型岩石中才可以进行。间接技术只有在厚的页岩层序中才可运用。因此,用这两种不同的方法所获得的压力数据组针对的对象是不同的。关于压力封闭的存在及其性质有许多不确定性。就总体的情况来看,异常压力的研究者可分为两类,一类认为有效封闭是存在的,另一类认为是不存在的。认为有效封闭不存在的研究者们支持传统的水力学解释,该解释表明异常压力可由弱导水的岩石所围。因此从地质意义上说,异常压力是一瞬即逝的。相信有效封闭存在的大多数人都不能给出构成封闭的具体证据。虽然不同岩石对烃类聚集的封闭能力已被查明,但对包含异常压力封闭的专门研究却很少。毛细管力对烃类圈闭的影响得到了广泛承认,虽然烃类的生成通常被当作超压产生的一个机理,但在进行地层压力研究中,毛细现象在很大程度上被忽视了。对压力封存箱(compartment)的描绘,尤其是对那些已知其地质时期的封存箱的描绘,是一个可以用来绘出和查明潜在封闭的重要工具。如果对封闭特征没有专门知识,就不能对封闭的有效性和压力封存箱的寿命作出合理解释。

关键词：地层压力异常压力封闭压力油气聚集

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基于人群筛查的数字钼靶摄影与乳腺体层摄影中乳腺密度对诊断性能的影响

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国际医学放射学杂志 2019年第6期 734-735页

作者： B.H.?ster?s A.C.T.martinsen R.Gullien P.Skaane 徐文达 Department of Diagnostic Physics and Division of Radiology and Nuclear Medicine Oslo University Hospital

摘要目的根据容积密度、年龄和乳腺摄影的结果,比较数字化乳腺摄影(DM)与乳腺体层摄影(DBT)的真阳性和假阳性结果。材料与方法从2010年11月—2012年12月

关键词：乳腺密度年龄组钼靶摄影体层摄影人群筛查

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Coronary Flow Reserve Assessment of Orbital Atherectomy: An Observational Pilot Study

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Journal of Biomedical Science and Engineering 2019年第4期12卷 269-275页

作者： Nabil Dib Brad J. martinsen Bynthia M. Anose John McB. Hodgson Robert Kohler Georges Nseir Nathalie R. Antonios Richard Shlofmitz Jeffrey W. Chambers Cardiovascular Research and New Devices Mercy Gilbert Medical Center Gilbert USA International Society for Cardiovascular Translational Research Phoenix USA Scientific Affairs Cardiovascular Systems Inc. St. Paul USA Technology Solutions Group Moreland Hills USA Premier Cardiovascular Center Dignity Health Chandler Hospital Chandler USA Chicago Medical School North Chicago USA Department of Cardiology St. Francis Hospital Heart Center Roslyn USA Metropolitan Heart and Vascular Institute Mercy Hospital Minneapolis USA

The aim of this prospective observational pilot study was to observe the impact of orbital atherectomy (OA) on the coronary microcirculation via coronary flow reserve (CFR) measurements. Fifteen subjects who had successful OA and stent placement with no procedural complication were enrolled at 3 hospitals in the U.S. Baseline and hyperemic velocities were 16 ± 5.2 and 36 ± 14 cm/sec, respectively. The average CFR post-procedure was within the normal range at 2.23 ± 0.33. The observation of normal CFR following OA may be attributed to the orbital action of the device that allows for continuous flow during treatment, minimizing a bolus embolization effect which can impact microvascular function.