7 results on '"Carsjens GJ"'
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2. Het LAE informatieplan ; het resultaat van de eerste fase
- Author
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Hettelingh JP, Carsjens GJ, van Weenen R, van Beurden AUCJ, Hettelingh JP, Carsjens GJ, van Weenen R, and van Beurden AUCJ
- Abstract
RIVM rapport:This report is the result of the first stage of a project to develop an information-plan for the Laboratory for Waste Materials and Emissions (LAE). A structured information-policy is a necessary condition for an organisation to deal with information-flows, and its needs for hard- and software. An information-policy is formulated on the basis of an information-plan, which registers the development and structuring of information in the organisation. The report shows the existing and wanted relations between different parts of information of the LAE-departments, and also gives a complete inventory of all information which is used at the LAE. Conclusions of the report are that most information is used isolated within the LAE-departments and that it is necessary to create a system which links the information between different LAE-departments and routes the LAE-information to other laboratories, BMTV and MILGIS.
- Published
- 1990
3. Investigating the potential impact of ecological restoration strategies on people-landscape interactions through cultural ecosystem services: A case study of Xilin Gol, China.
- Author
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Dou Y, Zhen L, Bakker M, Yu X, Carsjens GJ, Liu J, and De Groot R
- Subjects
- China, Humans, Conservation of Natural Resources, Ecosystem
- Abstract
Although cultural ecosystem services (CES) are greatly valued by diverse stakeholders, the full range of CES provided by a landscape is notoriously difficult to estimate. The resulting lack of objective norms for CES may lead to the loss of the multiple non-material factors that contribute to how a landscape is valued and experienced. This is especially true under ecological restoration, which could sharply change how people experience landscapes. Therefore, our aim in this study was to identify and analyze the CES that arise from people's interaction with their landscape, focusing specifically on the influences of different ecological restoration strategies. We carried out semi-structured interviews with the residents of villages in the Xilin Gol League, Inner Mongolia, China. Regarding the implementation of ecological restoration measures, the people living in typical pastoral zones would be most affected by these measures because their main livelihood (animal husbandry) depends strongly on grasslands. Our results demonstrated that human perception of the CES provided by landscapes is affected not only by the factors related to an individual's cultural worldview (e.g., ethnicity, age, education) but also by the utility of landscape features, which are reflected in the individual's landscape dependence (occupation). Our research provides a cultural perspective for aspects of local well-being in addition to ecological and economic targets. Understanding these other aspects is critical for implementing sustainable ecological restoration., (Copyright © 2022 Elsevier Ltd. All rights reserved.)
- Published
- 2022
- Full Text
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4. An integrated assessment of environmental, economic, social and technological parameters of source separated and conventional sanitation concepts: A contribution to sustainability analysis.
- Author
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Firmansyah I, Carsjens GJ, de Ruijter FJ, Zeeman G, and Spiller M
- Subjects
- Caribbean Region, Reproducibility of Results, Waste Disposal, Fluid, Wastewater, Sanitation, Sewage
- Abstract
Resource recovery and reuse from domestic wastewater has become an important subject for the current development of sanitation technologies and infrastructures. Different technologies are available and combined into sanitation concepts, with different performances. This study provides a methodological approach to evaluate the sustainability of these sanitation concepts with focus on resource recovery and reuse. St. Eustatius, a small tropical island in the Caribbean, was used as a case study for the evaluation. Three source separation-community-on-site and two combined sewerage island-scale concepts were selected and compared in terms of environmental (net energy use, nutrient recovery/reuse, BOD/COD, pathogens, and GHG emission, land use), economic (CAPEX and OPEX), social cultural (acceptance, required competences and education), and technological (flexibility/adaptability, reliability/continuity of service) indicators. The best performing concept, is the application of Upflow Anaerobic Sludge Bed (UASB) and Trickling Filter (TF) at island level for combined domestic wastewater treatment with subsequent reuse in agriculture. Its overall average normalised score across the four categories (i.e., average of average per category) is about 15% (0.85) higher than the values of the remaining systems and with a score of 0.73 (conventional activated sludge - centralised level), 0.77 (UASB-septic tank (ST)), 0.76 (UASB-TF - community level), and 0.75 (ST - household level). The higher score of the UASB-TF at community level is mainly due to much better performance in the environmental and economic categories. In conclusion, the case study provides a methodological approach that can support urban planning and decision-making in selecting more sustainable sanitation concepts, allowing resource recovery and reuse in small island context or in other contexts., (Copyright © 2021 The Authors. Published by Elsevier Ltd.. All rights reserved.)
- Published
- 2021
- Full Text
- View/download PDF
5. Assessing the influences of ecological restoration on perceptions of cultural ecosystem services by residents of agricultural landscapes of western China.
- Author
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Dou Y, Zhen L, Yu X, Bakker M, Carsjens GJ, and Xue Z
- Subjects
- China, Ecology, Environmental Monitoring, Environmental Restoration and Remediation, Humans, Agriculture, Conservation of Natural Resources, Ecosystem
- Abstract
Landscape change caused by ecological restoration projects has both positive and negative influences on human livelihoods, yet surprisingly little research on the cultural consequences of ecological restoration in agricultural landscapes has taken place. Cultural consequences can be captured in the ecosystem services framework as cultural ecosystem services (CES). However, assessment and valuation of these services to support decision-making for this essential ecosystem is lacking. To help fill this gap, we assessed the opinions of Chinese rural communities about CES and the changes in their perception under the Grain for Green program (GFG), a nationwide program to relieve the pressure on ecosystems (soil erosion and land degradation) by converting cultivated land or barren land on steep slopes into grassland and forests. We used Guyuan City in China's Ningxia Hui Autonomous Region as a case study, using a workshop to identify the CES provided by the agricultural landscape, followed by semi-structured household interviews to quantify perceptions of these CES. We found that all eight CES types identified by the workshop were perceived by the rural communities. Reforestation changed their perceptions of CES directly due to land cover change and indirectly due to the resulting economic changes and migration of mostly young workers in search of better jobs. Cultivated land was perceived as more important than forest for CES provision. In addition, residential areas were perceived as providing significant CES because of local traditions that produce close and highly social neighborhood bonds in agricultural landscapes., (Copyright © 2018 The Authors. Published by Elsevier B.V. All rights reserved.)
- Published
- 2019
- Full Text
- View/download PDF
6. Assessment of nitrogen and phosphorus flows in agricultural and urban systems in a small island under limited data availability.
- Author
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Firmansyah I, Spiller M, de Ruijter FJ, Carsjens GJ, and Zeeman G
- Abstract
Nitrogen (N) and phosphorus (P) are two essential macronutrients required in agricultural production. The major share of this production relies on chemical fertilizer that requires energy and relies on limited resources (P). Since these nutrients are lost to the environment, there is a need to shift from this linear urban metabolism to a circular metabolism in which N and P from domestic waste and wastewater are reused in agriculture. A first step to facilitate a transition to more circular urban N and P management is to understand the flows of these resources in a coupled urban-agricultural system. For the first time this paper presents a Substance Flow Analysis (SFA) approach for the assessment of the coupled agricultural and urban systems under limited data availability in a small island. The developed SFA approach is used to identify intervention points that can provide N and P stocks for agricultural production. The island of St. Eustatius, a small island in the Caribbean, was used as a case study. The model developed in this study consists of eight sub-systems: agricultural and natural lands, urban lands, crop production, animal production, market, household consumption, soakage pit and open-dump landfill. A total of 26 flows were identified and quantified for a period of one year (2013). The results showed that the agricultural system is a significant source for N and P loss because of erosion/run-off and leaching. Moreover, urban sanitation systems contribute to deterioration of the island's ecosystem through N and P losses from domestic waste and wastewater by leaching and atmospheric emission. Proposed interventions are the treatment of blackwater and greywater for the recovery of N and P. In conclusion, this study allows for identification of potential N and P losses and proposes mitigation measures to improve nutrient management in a small island context., (Copyright © 2016 Elsevier B.V. All rights reserved.)
- Published
- 2017
- Full Text
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7. [Environmental impact assessment based on planning support system].
- Author
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Chen WB and Carsjens GJ
- Subjects
- China, Decision Making, Environment, Humans, City Planning, Conservation of Natural Resources, Decision Support Techniques, Ecosystem, Environment Design
- Abstract
How to assess environmental impact is one of the keys in land use planning. This article described in detail the concepts of activities, impact zones, functions, and sensitivities, as well as the development of STEPP (strategic tool for integrating environmental aspects in planning procedures) based on Avenue, the secondary developing language of ArcView GIS. The system makes it convenient for planning practitioners exchanging information, and can spatially, visually and quantitatively describe environmental impact and its change. In this study, the urban-rural combination area located between EDE and Veenendaal of The Netherlands was taken as case, and the results indicated that the environment was incorporated well in the planning procedure based on the concepts, and could also demonstrate the effects of planning measures on environment spatially, explicitly, and in real-time, facilitating the participation of planning practitioners and decision-making. Some proposals of how to promote STEEP application in China were suggested.
- Published
- 2011
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