Multi-attribute preference modelling and regional land-use planning

Forest management policy decisions are complex due to the multiple-use nature of goods and services from forests, difficulty in monetary valuation of ecological services and the involvement of a large number of stakeholders. Multi-attribute decision techniques can be used to synthesise stakeholder preferences related to regional forest planning because it can accommodate conflicting, multidimensional, incommensurable and incomparable objectives. The objective of this paper is to examine how the Analytical Hierarchy Process (AHP) can be used to incorporate stakeholder preferences in determining optimal forest land-use choices. The Australian Regional Forest Agreement Programme is taken as an illustrative case for the analysis. The results show that the AHP can formalise public participation in decision making and increase the transparency and the credibility of the process.     

Participatory decision-making in land use planning: An application in Costa Rica

The economic, social and environmental implications of electricity generation for land use planning are a significant and complex problem in many countries. One reason for this complexity is the existence of several stakeholders with very different views or perceptions of the different criteria underlying the decision-making process. Therefore, the aggregation of individual stakeholder preferences into a single collective preference is a crucial problem. In this paper, this type of problem is addressed with the help of a methodology based upon the definition of a consensus within a distance-based framework. The methodology is applied to a case study in Costa Rica at two levels: at a national level and at a river basin level. The River Birrís was chosen because the conflict of interests between agricultural production and electricity generation are especially significant in this basin.     

Comparing land-use alternatives: Using the ecosystem services concept to define a multi-criteria decision analysis

In landscape planning, land-use types need to be compared including the ecosystem services they provide. With multi-criteria decision analysis (MCDA), ecological economics offers a useful tool for environmental questions but mostly case-specific criteria are applied. This, however, makes it difficult to compare findings. Therefore, we present a systematic framework that includes the ecosystem services as criteria into MCDA. The ecological quantification of the provided ecosystem services is combined with the assigned importance of the single ecosystem services. In a case study from the central Alps, we compared three land-use alternatives resulting from land-use change caused by socio-economic pressures: traditional larch (Larix decidua) meadow, spruce forest (abandonment) and intensive meadow (intensification).Criteria for the MCDA model were selected by experts, criteria importance was ranked by stakeholders and criteria values were assessed with qualitative and quantitative indicators. Eventually spruce forest was ranked as the best land-use alternative followed by traditional larch meadow and intensive meadow. The combined approach of MCDA using ecosystem services as criteria showed how criteria weightings and criteria indicator values influence land-use alternatives' performance. The MCDA-model visualizes the consequences of land-use change for ecosystem service provision, facilitating landscape planning by structuring environmental problems and providing data for decisions.     

Are Internet surveys an alternative to face-to-face interviews in contingent valuation?

Internet is an increasingly popular data collection mode for stated preference research in environmental economics. However, little is known about how this survey mode may influence data quality and welfare estimates. As part of a national contingent valuation (CV) survey estimating willingness to pay (WTP) for biodiversity protection plans, we assign two groups of respondents either to an Internet or face-to-face (in-home) interview mode. Our design aims to better isolate measurement effects from sample composition effects by drawing both samples from the same sample frame. We find little evidence of social desirability bias in the interview setting or satisficing (shortcutting the response process) in the Internet survey. The share of “don't knows”, zeros and protest responses to the WTP question with a payment card is very similar between modes and equality of mean WTP cannot be rejected. Results are fairly encouraging for the use of Internet in CV as stated preferences do not seem to be significantly different or biased compared to face-to-face interviews.     

Choice modeling at the “market stall”: Individual versus collective interest in environmental valuation

The market stall, or valuation workshop, has recently been proposed as a way of addressing some of the limitations of conventional stated preference analysis. In this paper, we attempt to combine a participatory technique similar to the “citizens' jury” with choice modelling, a stated preference technique increasingly being applied in environmental economics. Our focus is on how changes in the context of decision-making (between choices made in isolation and those made in a group setting, and between choices made on individual well being versus collective criteria) produce differences in estimated welfare measures. The empirical context used is that of water quality improvements under the Water Framework Directive, the most significant reform in water legislation in the European Union for many years. We find that the choice experiment format can be successfully implemented in a valuation workshop and that moving from individual to collective choice produces, in this instance, a rather interesting change in both values and preferences which depends on the respondent's interests.     

Reducing protest responses by deliberative monetary valuation: Improving the validity of biodiversity valuation

This paper focuses on examining the validity of biodiversity valuation methodologies. The results of a group deliberation technique (deliberative monetary valuation) are compared to those derived from a contingent valuation (CV) survey using the same environmental topic. Evidence is here presented that DMV can address some of the limitations of CV; namely a prevalence for lexicographic preference ordering due to psychological reasons and the lack of a priori or well-formed preferences. Both of these methodological shortcomings can result in protest responses which decrease the external validity of results. It is common environmental valuation methodology practice to exclude protest responses from the analysis on the grounds that they are illegitimate choices, thus the sample and consequently the environmental valuation analysis may become less representative of the population. An advantage of the DMV methodology is that it was found to significantly reduce the rate of protest responses to less than half (from 29% to 13%). Furthermore, DMV significantly increased the proportion of positive bids but not the amounts contributed. In relation to preference formation issues, we suggest rethinking the current practice of the DMV method, and propose dedicating the entire initial discussion session to introducing the good outside of a valuation context.     

生态系统价值评估的经济学认识

本文就目前的研究热点—生态系统服务功能的价值评估的经济学基础进行初步研究和探讨,分析了如何从经济学角度来选择生态系统服务功能的价值评估对象,才能保证结果的可信性。同时,从经济学角度分析了生态系统价值评估存在的难题和困境,为今后的进一步研究提出了建设性方向。     

Linking forestry, sustainability and aesthetics

In forest planning, little research has been devoted towards examining how visual-impact assessment can improve the public acceptance of forest activities and augment forest sustainability. The objective of the present work is to review the methods of aesthetic assessment of forest landscapes, which will help the implementation of visual-impact assessment in sustainable forestry. From the numerous techniques of landscape evaluation that have been devised in recent years, the expert approach techniques have dominated in environmental management practices and the perception-based approach in research. The non-market economic valuation techniques are essentially trade-off methods and not aesthetic assessments by themselves. Revealed preference methods, such as hedonic-price, use actual market choices of individuals to get their preferences towards non-market attributes, and stated preference methods, such as contingent valuation method, rely on surveys to get directly the individual's willingness to pay for the non-market attributes. Psychophysical preference modelling is a popular quantitative holistic technique of landscape evaluation and if used in combination with indirect aesthetic evaluation methods might create new standards and protocols for techniques of objectively estimating public perception of aesthetic quality and thus to enhance social sustainability in forest space.     

Mixing methods within stated preference environmental valuation: choice experiments and post-questionnaire qualitative analysis

Assessing public preferences for natural resources is a difficult task. The complexity of the research problem has encouraged practitioners to adopt qualitative approaches as exploratory and diagnostic tools within the conventionally more quantitative stated preference research. Building on best practice from previous studies, this paper reports the findings of post-questionnaire focus group analysis, investigating the adequacy of a choice experiment (CE) valuation exercise and its public acceptability. The specifics of the scenario and design choices are shown to markedly reduce problems of charity like and bid-realism/fair-share responses, observed in previous studies, and significant sensitivity to good characteristics is observed. However, a less tractable problem of valuing unfamiliar goods remains, with insights given regarding public acceptability and the usefulness of the findings to environmental decision-making.     

Upstream-downstream transactions and watershed externalities: Experimental evidence from Kenya

Where environmental policies or projects seek behavioral change, understanding underlying norms and preferences is essential to securing environmental outcomes. This study models a payment for environmental services intervention in an experimental field laboratory in Nyanza Province, Kenya. Upstream and downstream individuals are paired in a standard investment game, in which the upstream mover's investment represents land use decisions and the downstream mover responds with a choice of compensation payment. The experimental intervention introduces an enforcement treatment on the downstream movers' compensation decisions for a single round. Underlying social preferences and identity appear to shape individual transactions between upstream and downstream individuals. Upstream first movers are sensitive to the removal of the enforcement on their downstream partners in the second round, and make decisions consistent with crowding out of social preferences. The results suggest that environmental interventions may affect resource decisions for individuals who are not themselves direct targets of enforcement.     

Social preferences and moral biases

An emerging consensus in economics is that three motives are at work in strategic decisions: distributive preferences, reciprocal preferences and self-interest. An important obstacle, however, has been moral biases: distortions created by self-interest can obscure our measures of social preferences. This paper describes a simple experiment to address this. We compare the decisions of implicated “stakeholders” with those of impartial “spectators.” We find that stakeholders are less inclined to respond to the generosity of others than are spectators. We also clarify a result in previous research [e.g., Offerman, T., 2002. Hurting hurts more than helping helps. European Economic Review 46, 1423–1437] that stakeholders punish unkindness more than they reward kindness. We find that this asymmetry in reciprocity has two sources: an asymmetry in the underlying preference that even impartial spectators display and a moral bias; stakeholders punish more and reward less than spectators. In sum, we find that all three motives have important and significant effects on final allocations.     

Improving pluralism in Multi Criteria Decision Aid approach through Focus Group technique and Content Analysis

Various economic valuation techniques and Multi Criteria Decision Aid (henceforth MCDA) methods seek to identify and evaluate the environmental impacts in aquatic ecosystems for the improvement of the decision making process. Despite the latter's ability to respond more effectively to the task of confronting environmental problems thanks to its multidimensional structure, strong criticism is levelled against the obscurity prevalent in the way the social preferences are elicited and certain criteria and weights are adopted. In the present paper, the Focus Group technique, complemented by Content Analysis, are applied in order to strengthen the pluralistic concept of MCDA approach and enhance the social learning in decision making processes. The analysis was accomplished within the framework of the EUROCAT project (European Catchments: Catchments Changes and their impacts on the coast), and was applied to the delta area of the Axios transboundary river in Northern Greece.     

Deliberative monetary valuation (DMV): Issues in combining economic and political processes to value environmental change

This paper explores and contrasts the different social processes of valuation now appearing as economic means of valuing the environment. Monetary valuation via stated preference approaches has been criticised for assuming well formed and informed preferences and excluding a range of sustainability concerns such as rights, fairness and equity. Deliberative monetary valuation (DMV) in small groups is a novel hybrid of economic and political approaches which raises the prospect of a transformative and moralising experience. Critics of standard contingent valuation approaches have advocated this as offering a way forward. However there has been a lack of clarity as to the means of obtaining values, the expected outcomes and their role. Moving to group settings of deliberation raises concepts of social willingness to pay and accept which are distinct from an aggregate of individual value, although this does not seem to have been widely recognised. A new classification of values is presented appropriate to the literature trying to merge economic and political processes. Values associated with the individual may be exchange values, charitable contributions or fair prices, while social values can be speculative, expressive or arbitrated. The use of DMV is shown to result in different values due to variations in the institutional setting and process of valuation.     

Valuing Global Ecosystem Services: What Do European Experts Say? Applying the Delphi Method to Contingent Valuation of the Amazon Rainforest

Valuing global public goods like the Amazon rainforest by stated preference surveys of a representative sample of the global population would be very costly and time consuming. We explore the use of the Delphi Method in contingent valuation (CV) by asking a panel of 49 European environmental valuation experts in two rounds what they think would be the result if a European CV survey of Amazon Rainforest protection plans was conducted. The experts’ best guess for the mean willingness-to-pay (WTP) by European households for preserving the current Amazon Rainforest, and thus avoiding a predicted loss in forest area by 2050 from currently 85% to 60% of the original forest in the 1970s, was 28 € per household annually as an additional income tax. Aggregated over all European households this amounts to about 8.4 billion € annually. This preliminary estimate indicate that WTP of distant beneficiaries is substantial, and could justify preservation of global ecosystem services where aggregated benefits of the local population often do not exceed the opportunity costs of preservation in terms of lost income from commercial activities. The income elasticity of WTP with respect to per-capita income in the European countries is 0.5–0.6. Recognizing the limitations and assumptions of the Delphi CV method, it could still be a time saving and cost-effective benefit transfer tool for providing international donors with much needed order-of-magnitude estimates of the non-use value of ecosystem services of global significance.     

Interview Effects in an Environmental Valuation Telephone Survey

Because of the lack of markets for many environmental services, economists have turned to valuation surveys to estimate the value of these services. However, lack of market experience may cause respondents in valuation surveys to be more prone to interview effects than they would be with other opinion surveys. Without reference to market price or experience, respondents are less likely to have well-defined preferences, which may cause respondents to be more easily influenced by the interview process and characteristics of the interviewer. In this paper, we investigate interview effects in a random digit dial telephone survey of recycling valuation and behavior. Following previous research in both psychology and survey methodology, we test the direct effects of interviewer gender and race, as well as the interaction effects between interviewer and respondent characteristics. Using data from 130 interviewers and 1,786 interviewees, we apply a hierarchical regression model that accounts for the clustering of interviews and controls for a variety of other confounding variables. We confirm the existence of both direct and conditional interviewer effects. Respondents state higher willingness to pay when interviewed by white or female interviewers than by non-white or male interviewers. There were also significant interaction effects between interviewer and respondent characteristics. The directions of the interviewer effects are consistent with previous survey research and social psychology theories. We also identify some non-traditional interview process factors that have an influence on survey responses.     

基于模糊多准则群决策的可持续项目选择模型

将模糊多准则群决策方法应用于可持续项目的选择决策中。首先构建可持续项目选择框架,包括投资的经济、社会和环境影响以及战略联盟、组织准备和投资风险六个评价准则。由于该框架的准则权重很难通过一组决策者不一致的偏好而确定,所以,运用乘法偏好关系和模糊偏好关系收集决策者对准则权重的偏好,利用目标规划方法进行建模并确定各个准则的相对权重;然后用模糊TOPSIS方法评估投资机会的适合程度。TOPSIS方法是基于偏好比率的一种决策方法,其中偏好比率运用于模糊数排序和模糊距离测量,可以有效地计算出每个备选方案与理想方案的模糊距离,从而根据距离判断其亲密系数,并最终应用于最佳方案的抉择。最后,以某投资集团的可持续投资项目选择问题为例进行分析,验证了方法的有效性和可行性。     

Preference for Landings’ Smoothing and Risk of Collapse in Optimal Fishery Policies: The Ibero-Atlantic Sardine Fishery

Several world fish stocks are being explored at unsustainable levels and require management plans to rebuild stock abundance. Defining a management plan is, however, a complex task that entails multidisciplinary work. In fact, while it requires solid scientific knowledge of fish stocks, the inclusion of economic and social objectives is crucial to a successful management implementation. In this paper we develop an age-structured bioeconomic model where the objective function is modified to accommodate preferences from different stakeholders. In particular, we consider important characteristics that a management plan should take into account: profit maximization, fishermen’s preference for reducing landings’ fluctuations and risk of fishery collapse. Modeling preferences for reducing landings’ fluctuations is accomplished by defining a utility function with aversion to intertemporal income fluctuations. Building upon biology literature, we model precautionary concerns by incorporating a probability of collapse that depends on current spawning biomass. We illustrate how this framework is able to assist in the analysis and design of harvest control rules applying it to the Ibero-Atlantic sardine stock.     

Reconsidering Heterogeneity and Aggregation Issues in Environmental Valuation: A Multi-attribute Approach

The economic valuation of complex environmental goods (composed of multiple attributes) is an expanding field of research in ecological and environmental economics. However, several issues are still subjects of debate. This paper focuses on three of them: the linearity of the valuation function in the attributes; aggregation criteria for obtaining social values; and the heterogeneity of individuals’ utility functions. A methodological approach based on Multi-attribute Utility Theory, which enables us to contrast the impact of these concerns on the valuation of environmental goods, is proposed. We employ the methodology to value a protected natural area and, from the results obtained, we can conclude that the non-linearity and the heterogeneity of the individual utility function are relevant aspects of environmental valuation that need to be taken into account when valuing environmental goods.