This study was conducted at Dellanj Forest in South Kordofan State, during the period 2021/2022. paper aims to quantify economic value of ecosystem services forest. Data this analysis were collected using interview for respondents visited forest one week, monthly and holidays), 120 questionnaires distributed contains different questions concerning provided by To supplement primary data, seconda...

It has been recognised that the complex interrelationships between environmental processes and socio-economic systems require integrated approaches to catchment management (Cai et al., 2003; Jakeman and Letcher, 2003;). Until recently, integrated modelling tools were often limited to either biophysical processes to assess environmental changes, or to economic models focussing on socio-economic ...

Understanding the economic value of nature and the services it provides to humanity has become increasingly important for local, national, and global policy and decision making. It has become obvious that quantifying and integrating these services into decision making will be crucial for sustainable development. Problems arise in that it is difficult to obtain meaningful values for the goods an...

Most structural and some nonstructural water projects require significant sunk costs and lead to uncertain economic and ecological outcomes. For instance, building irrigation or flood control dam requires sizable sunk cost, an investment that is difficult to recover later. The dam faces uncertainties in terms of future rainfall, the performance of the dam’s structures and downstream levees, the...

The ecosystem services (ES) concept is one of the main avenues for conveying society’s dependence on natural ecosystems. On-ground applications of the concept are now widespread and diverse and include its use as a communication tool, for policy guidance and priority setting, and for designing economic instruments for conservation. Each application raises ethical considerations beyond tradition...

Participants in contingent valuation surveys and jurors setting punitive damages in civil trials provide answers denominated in dollars. These answers are better understood as expressions of attitudes than as indications of economic preferences. Well-established characteristics of attitudes and of the core process of affective valuation explain several robust features of dollar responses: high ...