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氮稳定同位素基准的可变性及对营养级评价的影响
水域生态学 稳定同位素 营养级
2010/12/28
稳定同位素技术已经成为生态学家研究生态系统特征与过程的重要手段之一.在利用稳定同位素研究植物动物和动物之间的营养关系或者进行多生态系统的比较研究过程中，通常需要选择某种生物的稳定同位素作为“基准（baseline）”.同位素基准的目的是反映食物网生物最初物质来源的同位素特征.同位素基准的选择取决于具体研究问题与系统.本文综述了水域生态系统研究中初级生产者和初级消费者氮稳定同位素作为基准的应用.不同...
论有机氮磷在湖泊水环境中的作用和重要性
湖泊 有机氮 有机磷
2010/12/28
长期以来，国内外学者对湖泊中氮磷等营养物质及其循环开展了大量研究，在其污染过程、控制和管理等方面取得了许多重要进展.然而，现有研究主要集中在总氮、总磷和无机氮磷等方面，对有机氮磷的来源、循环及生物和生态学效应的研究相对缺乏.近期研究显示：有机氮磷是湖泊水体和沉积物中的重要组分，可以通过酶解和微生物活动转化成生物可利用性营养盐，在湖泊生态系统中起着十分重要的作用.本文简要分析了有机氮磷已有的研究进展...
The democratisation of decision-making processes in the water sector II
democratisation decision-making processes water sector II
2009/12/4
The second part of this paper investigates one possibility of realising an inversion of the so-far established order of knowledge/power structures in that it corresponds to an inversion in power relat...
The democratisation of decision-making processes in the water sector I
democratisation decision-making processes water sector I
2009/12/4
The paper introduces an inversion of the structure of the decision making process in the water sector that has been so far followed in most countries, and in almost all so-called 'third world' societi...
An owner's view of hydroinformatics:its role in realising the bridge and tunnel connection between Denmark and Sweden
view of hydroinformatics bridge and tunnel connection Denmark Sweden
2009/12/4
The motorway and railway connection between Denmark and Sweden, opened on 1 July 2000, when taken together with the connection across the Great Belt between the largest Danish islands, now provides a ...
GROUNDWATER CONTAMINATION FROM HOME HEATING OIL SYSTEMS
GROUNDWATER CONTAMINATION HOME HEATING OIL SYSTEMS
2009/10/19
The storage of home heating oil on private residential property is widespread and common in Ireland but in recent years there has been a noticeable increase in the number of tank and line leaks and as...
A GREY SYSTEM MODEL FOR PREDICTING TREND CHANGE OF URBAN WASTE WATER LOAD
Grey System Prediction Model URBAN WASTE WATER LOAD TREND CHANGE
2009/10/19
The present paper introduces a Grey System Prediction Model (GSPM) by incorporating concepts of grey numbers within a grey differential equation framework as a means for predicting trends in urban was...
THE IMPACT OF URBANIZATION AND PROTECTION OF WATER RESOURCES, OWERRI, NIGERIA
WATER RESOURCES surface water NIGERIA
2009/10/19
Short-term surface water and groundwater pollution surveys of the Owerri urban area and environs were conducted to establish current levels of pollution. An attempt has been made to show the relations...
HYDROGEOLOGICAL PERFORMANCE ASSESSMENT OF AGROWELLS,SRI LANKA
hydrogeological parameters agricultural purposes diameter dugwells
2009/10/19
The hydrogeological parameters of large diameter dugwells that are used for agricultural purposes, called agrowells, were studied. All agrowells investigated in the drainage basin can be categorized i...
BACTERIOLOGICAL PROPERTIES OF GROUNDWATER IN PARTS OF NIGER STATE, NIGERIA
GROUNDWATER NIGER STATE BACTERIOLOGICAL
2009/10/19
Bacteriological analysis of groundwater from newly drilled boreholes in hospital environments in towns and villages in central Nigeria, has revealed that groundwater can be contaminated by microorgani...
AN ENVIRONMENTAL IMPACT ASSESSMENT MATRIX MODEL FOR EMBANKMENTS IN FLATLAND LANDSCAPES
EMBANKMENTS environmental impacts FLATLAND LANDSCAPES surface relief.
2009/10/19
A methodology is presented for assessing the environmental impacts produced by building embankments in regions of scarce surface relief. It is shown that the most relevant alterations affect surface r...
A STUDY OF METHODS TO REDUCE GROUNDWATER CONTAMINATION AROUND A LANDFILL IN KOREA
GROUNDWATER CONTAMINATION KOREA LANDFILL
2009/10/19
Several alternatives were studied to prevent groundwater contamination around the Kimpo landfill site in Korea using a numerical model and hydraulic parameter measurements. The leachate flow system an...
ENVIRONMENTAL IMPACT ASSESSMENT OF RADIONUCLIDE TRANSPORT AT THE TRIGA REACTOR, KOREA
ENVIRONMENTAL IMPACT TRIGA REACTOR RADIONUCLIDE TRANSPORT
2009/10/19
The simulation of radionuclide transport at the TRIGA reactor site was carried out to analyze the distribution of residual radionuclide concentrations around the reactor site after reactor decommissio...
NUMERICAL SIMULATION OF FLOW AND CONTAMINANT MIGRATION AT A MUNICIPAL LANDFILL
NUMERICAL SIMULATION MUNICIPAL LANDFILL FLOW AND CONTAMINANT MIGRATION
2009/10/13
The flow and transport characteristics of the Ano Liosia Landfill site in Athens, Greece, were simulated by numerical methods using groundwater flow and contaminant transport models. A methodology for...
APPLYING A DECISION SUPPORT SYSTEM TO OPTIMIZE WATER MOVEMENTS：THE KING ABDALLAH CANAL AT THE JORDAN VALLEY
Decision Support System Jordan Valley Authority King Abdallah Canal OPTIMIZE WATER MOVEMENTS
2009/10/13
A Decision Support System (DSS) is one of the essential tools that help decision makers, professionals and managers operate, control and take decisions on a sound and integral basis. Applications of a...