One of the most widely appreciated problems of contingent valuation is the potential manipulability of the method, thus subjecting it to possible strategic bias. This paper shows that under usual conditions this problem also holds for market-based methods, such as travel cost and hedonic pricing. However, not all formats of these valuation methods are manipulable. This paper finds positive resu...

hara biosphere reserve in southern hormozgan province with 85686 hectares areas is located between bandar khamir and queshm island. this area can be considered as the most spectacular regions of iran for a unique coastal seascape. mangrove forests and amazing biodiversity make this region as the most significant ecotourism areas throughout the country. this research attempts to determine recrea...

Contingent valuation (CV) and conjoint analysis were used to estimate landowner’s willingness to pay (WTP) for ecosystem management on non-industrial private forest land. The results suggest that even when conjoint and CV questions are the same, except for rating and pricing format, respectively, WTP estimates are quite different. Since most conjoint models essentially count ‘maybe’ responses t...

economic valuation of water is useful in the administration and management of water. population growth and urbanization caused municipal water demand increase in iran. limited water resource supply and urban water network capacity raised complexity in water resources management. present condition suggests using economic value of water as a criterion for allocating policies and feasibility study...

forests and rangelands are the most important natural ecosystems which provide many economic benefits to the society due to their biodiversity and ecological functionalities. dashtenaz wildlife refuge, sari, is a sylvan region, covering 55 ha of rangeland with abundant diversity, is refuge of an endangered species of deer called dama mesopotamica. in this study, contingent valuation method (cvm...

the air in tehran is one of the most polluted airs in the entire world. because of the air pollution in the great tehran area, morbidity, mortality and symptoms emerge. this study has been conducted for the first time in iran. according to this study the total annual direct medical costs of morbidity estimated at us$ 3258255.48.our work also led to the estimation of an income elasticity of wtp ...

anzali porter is one of the cities that is located in gilan province, is important because it's recreational and tourism attraction in the region. therefore, the study of recreational value can affect prediction requires, shortage removal and recreation expansion in the region. the purpose of current study is to estimate the recreational value of anzali wetland with contingent valuation me...

To help the civil servants in both central and local governments in Taiwan operating administrative works smoothly under a new digitalized system launched in 1994, a series of courses related to information technology were offered free to them annually by the central governments. However, due to the budget deficit in recent years, the government is considering decreasing or completely canceling...

JOHN QUIGGIN Department of Economics James Cook University People express concern about the possible extinction of animal species which they will never see, about damage to wilderness areas they will never visit, and so on. Such concerns are often interpreted by economists in terms of ‘existence’ or ‘passive use’ values. Three views have been proposed regarding the appropriate way of dealing wi...

ed and Indexed in: Aquatic Sciences and Fisheries Abstracts Centre for the Economics and Management of Aquatic Resources (CEMARE), Department of Economics, University of Portsmouth, Locksway Road, Portsmouth PO4 8JF, United Kingdom. Copyright © University of Portsmouth, 2001 All rights reserved. No part of this paper may be reproduced, stored in a retrievable system or transmitted in any form b...