Browsing by Subject "Wasser"

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    An integrated computable general equilibrium model including multiple types and uses of water
    (2015) Luckmann, Jonas Jens; Grethe, Harald
    Water is a scarce resource in many regions of the world and competition for water is an increasing problem. To countervail this trend policies are needed regulating supply and demand for water. As water is used in many economic activities, water related management decisions usually have complex implications. Economic simulation models have been proven useful to ex-ante assess the consequences of policy changes. Specifically, Computable General Equilibrium (CGE) models are very suitable to analyze the consequences of water-related management decisions, as they consider the interlinkages between different sectors and economic agents within an economy. However, so far there is no CGE model which provides a holistic picture of the water sector including all aspects of provision, demand and management. Against this background, in this thesis a CGE model (STAGE_W) is developed which is especially focused on the water sector and provides a generic, integrated and flexible framework to incorporate various water sources from which several water activities produce water commodities of differing quality. These are consumed by other activities or by households. The applications presented in this thesis are to the best knowledge of the author the first CGE approaches to depict the recycling of wastewater and the provision of brackish groundwater as independent activities. Another novelty of the model is that it is capable to depict cascading water use. Furthermore, the inclusion of several water specific taxation instruments allows for a wide range of water policy simulations. To demonstrate the capabilities of the model, STAGE_W is applied to a Social Accounting Matrix for Israel. Based on this database several case studies are conducted which are presented in three scientific articles. Israel provides an ideal example as the country is strongly affected by water scarcity and is also among the world leaders regarding the development of new water sources and technologies. In the first article, a literature review on previously existing approaches of water depiction in CGE models is provided along with a detailed description of the specifics of STAGE_W. The model is applied to simulate a reduction of freshwater resources. The effects of this shock are analyzed with and without further increasing the desalination capacity. The results show that the economic effects are slightly negative under both scenarios. Counterintuitively, the provision of additional potable water through desalination does not substantively reduce the negative outcomes. This is mainly due to the high costs of desalination, which are currently subsidized in Israel. The second article simulates an abolishment of the discriminatory water pricing system currently established in Israel. Instead, two alternative schemes are introduced: price liberalization, which unifies the prices for all potable water consumers at cost recovery rates, and marginal pricing, lifting the potable water price to the cost of desalination. It is found that both schemes yield a double dividend by simultaneously saving water and increasing economic growth. Thereby, marginal pricing allows for larger water savings while price liberalization results in higher economic growth. In the third article, the model is further refined: the quantity of sewage available for reclamation is linked to the water consumption of economic entities connected to a sewer system. This allows to depict cascading water use and to endogenously estimate the marginal value of unpurified sewage. It is shown that a consideration of this link is crucial, if a high share of potable water is reclaimed and used. In this case, reducing the potable water consumption of municipalities also negatively affects the availability of reclaimed wastewater and thereby reduces its potential as a substitute for potable water. These case studies provide evidence of the validity of the model developed. The model results cannot necessarily be anticipated, as they are the outcome of complex interrelations within the model and none of the previous models has the capacity to capture all the relevant aspects of the water sector which influence these outcomes. Therefore, it is concluded that STAGE_W constitutes a helpful tool to implement a more sustainable management of water resources, allowing policy makers to ex-ante estimate the economy-wide effects of water related decisions. As the whole economy is depicted, a more holistic picture of effects resulting from changes in the water sector can be drawn in comparison to single sector models or cost-benefit analyzes.
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    Collaborative water governance in Thailand : much ado about nothing?
    (2015) Kanjina, Sukit; Hoffmann, Volker
    The river basin committee (RBC) framework was first introduced in Thailand in 2002, and the current one adopted in 2007 has been implemented in all 25 river basins located in the country ever since. By all accounts, the RBC framework is innovative as far as Thailand’s administrative system and water resource sector are concerned. It was only recently that the former started to promote non-public sector participation, and the underlying legal framework expressly requires that representatives of the non-public sector, such as water user organizations and local experts, be included in the RBC together with those representing the public agencies concerned. The latter envisions the RBC as a new mechanism for managing water resources by using a river basin as a managerial unit. Based on the RBC framework’s prescription, it can be seen that Thailand is moving toward collaborative water governance, where both public and non-public sector representatives take part in decision making on water resource-related issues in their respective river basin. This study empirically examines the implementation process and outcomes of the RBC framework by using the Ping RBC arrangement as an illustrative case. It aims specifically to explore the formation and management of the RBC, its collaborative processes and participation, and the outcomes it generates. To this end, semi-structured interviews were conducted with key informants such as the officials responsible from Water Resources Regional Office 1 (WRO 1), and Ping RBC members; and an informal interview was applied as well with some DWR officials. In addition, relevant activities were observed through non-participant observation, while related documentary data, e.g. documents on the RBC framework, also were collected. The data gathered were analyzed by means of qualitative content analysis. It was found overall that the Ping RBC framework was established by following relevant directives. Ping RBC members include representatives from the public sector such as the Royal Irrigation Department (RID) and Department of Water Resources (DWR), as well as the provincial governors concerned and representatives from the non-public sector, including water user organizations (agricultural, industrial, commercial, service, and tourism sectors), local government organizations (LGOs), and the expert group; while WRO 1 serves as the secretariat. In addition, other governing bodies were established as well, including one river basin sub-committee, five provincial river basin working groups, and 20 sub-river basin working groups who, similar to Ping RBC members, represented both the public and non-public sector at the river basin, provincial, and sub-river basin level. It was discovered that regarding RBC management the Ping RBC and its governing bodies were governed by the lead organization-governed form, where WRO 1 played the leading role and left no room for involvement from other members. For example, it called the meetings and prepared their agenda. Indeed, meetings were the only activity organized for these river basin governing bodies and they were infrequent (e.g. twice per year for the Ping RBC). Furthermore, they were organized with a formal format, where the officer responsible normally provided information to the meeting, with virtually no deliberation or discussion. With these meetings being the only activity where members of the river basin governing bodies could get together, it was apparent that face-to-face dialogue, which is a crucial element in leading to others elements in a collaborative process, such as trust and shared understanding, was simply non-existent. Interaction between the secretariat and members of the river basin governing bodies, as well as among the members also failed to occur. Participation in the Ping RBC setup involved just information sharing, as members of the Ping RBC and its governing bodies were provided with only data on, for example, drought and flood situations. The governing bodies of the Ping River Basin, especially the Ping RBC, took part in approving river basin management and development frameworks as well as annual river basin management and development plans. However, their approval was unnecessary because the frameworks and annual plans in question were a collection of project plans gathered from the public agencies concerned and LGOs located in the river basin. They were prepared based on relevant policies and directives, with no need for approval from the Ping RBC setup before submission for national budget allocation. Since the frameworks and annual plans were the only outputs produced, it was therefore apparent that the Ping RBC framework performed virtually no functions to fulfill its mandates such as a water resource management plan, water user priority or water allocation. Evidently, the Ping RBC framework is an ineffective mechanism that is characterized by lack of collaboration, participation and outcomes, which have impacts on water resource management in the river basin. A similar result can be expected from the other 24 RBCs operating under the same administrative system and legal framework. Therefore, Thailand is still far from achieving collaborative governance in its water resource sector. Clearly, this unsuccessful RBC framework was influenced by the Thai administrative system; for instance, the public agencies involved have to follow their own policies and directives, thereby failing to make the RBC framework their top priority and only passively participating in the setup. However, the underlying cause is due largely to the RBC framework’s lack of authority. This is because the legal framework regulating the RBC framework has limited legal authority; consequently, virtually no authority is delegated to this arrangement. Accordingly, the RBC framework has no full authority regarding water resource management as its decisions, if any, can be enforced upon only public agencies and state-owned enterprises. Furthermore, it also has less authority when compared to other public bodies governed by superior legal frameworks; as such, it cannot force active participation in the RBC arrangement, and is not officially recognized (e.g. by the budget allocation system). It can be seen as important that with no authority delegated, non-public sector representatives do not share any decision making power despite their inclusion into the framework concerned. Therefore, to avert the same result generated by the RBC framework in moving toward collaborative water governance, policy changes are needed regarding its authority and implementation process at the national level, or at the DWR. Ideally, a change is required at the national level by passing a comprehensive legal framework, i.e. a Water Act. By this law, the RBC framework’s authority in managing water resources is secured and the framework itself is officially recognized. Arrangements for implementation of the RBC framework also can be prescribed, e.g. a budget allocation system recognizing the RBC framework and creating the RBC’s own office. However, this option is rather difficult to achieve, if not impossible, due to the lack of political support. A more probable change at the national level would be to issue a new regulation that revises the RBC framework, which can be done more easily than passing a law. Essentially, under this new regulation, the new RBC framework would be based at the provincial level. As such, the RBC would be abolished, while the provincial RBC and its governing bodies would be transformed to ‘collaborative watershed partnerships’ focused on a provincial river basin master/action plan. By this new regulation, the public bodies concerned would be obliged to follow the plan mentioned when preparing their water resource-related projects/programs, which would be applicable within authority of the regulation. In addition, diverse activities (e.g. meetings and capacity building) should be organized in order to support both the river basin governing bodies and implementing units of the DWR. The DWR should change its policies regarding implementation of the RBC framework, if there is no change at the national level, and the RBC framework continues to be carried out under the current regulation. It is essential in this circumstance for the DWR to encourage a revision of the RBC structure in order to make it less complex and more manageable, and shift the focus from the RBC itself to the river basin governing bodies at the provincial and sub-river basin level. Besides capacity building activities, and frequent and less formal meetings, the DWR should also direct its implementing units to facilitate the river basin governing bodies in order to develop a river basin management plan for respective provinces. This should be based on the problems and needs of the sub-river basins located in those particular provinces; and presented through the public agencies and LGOs concerned for consideration and inclusion in their own plans. This might be the only way to increase the likelihood of some elements of the river basin management plan being realized, given that the RBC framework has no authority or official recognition.