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1.
Former foes, industry and environmentalists are now finding common ground, literally. Through innovative approaches in harmony with economic development, the two camps are working together to protect lands and wildlife. Three key conservation groups spearheading the movement are The Nature Conservancy, The Conservation Fund, and the Wildlife Habitat Council. Forms of cooperation include land donations; land purchases; use of conservation easements; land swaps; joint land management; and technical assistance for land management. In this article, the author provides an overview of these collaborative efforts, factors driving the movement, and the road ahead.  相似文献   

2.
The objectives of this study are to understand tradeoffs between forest carbon and timber values, and evaluate the impact of uncertainty in improved forest management (IFM) carbon offset projects to improve forest management decisions. The study uses probabilistic simulation of uncertainty in financial risk for three management scenarios (clearcutting in 45‐ and 65‐year rotations and no harvest) under three carbon price schemes (historic voluntary market prices, cap and trade, and carbon prices set to equal net present value (NPV) from timber‐oriented management). Uncertainty is modeled for value and amount of carbon credits and wood products, the accuracy of forest growth model forecasts, and four other variables relevant to American Carbon Registry methodology. Calculations use forest inventory data from a 1,740 ha forest in western Washington State, using the Forest Vegetation Simulator (FVS) growth model. Sensitivity analysis shows that FVS model uncertainty contributes more than 70% to overall NPV variance, followed in importance by variability in inventory sample (3–14%), and short‐term prices for timber products (8%), while variability in carbon credit price has little influence (1.1%). At regional average land‐holding costs, a no‐harvest management scenario would become revenue‐positive at a carbon credit break‐point price of $14.17/Mg carbon dioxide equivalent (CO2e). IFM carbon projects are associated with a greater chance of both large payouts and large losses to landowners. These results inform policymakers and forest owners of the carbon credit price necessary for IFM approaches to equal or better the business‐as‐usual strategy, while highlighting the magnitude of financial risk and reward through probabilistic simulation.  相似文献   

3.
This study examines land contract decision-making with the use of an eastern Arkansas data set. Estimated probit models used to test contract choice hypotheses support a credit constraint hypothesis, indicating that contract choice is based on: 1) the tenant’s financial position and operating expense levels, 2) the size of the operation; 3) alternative uses of agricultural land; and 4) the supply of contracted land. Results indicate limited support for the agency problem hypothesis and reject the risk aversion and farmer managerial ability hypotheses. Regression equations used to select lease term hypotheses indicate that cash rent levels are sensitive to land quality, supply of contract acres, irrigation, and crops produced. Tenant shares of the crop and variable costs are less sensitive to land quality than cash rents. Other variables that influence tenant shares of the crop and variable costs include tenant/landlord social capital, the supply of contracted acres, and crop selection.  相似文献   

4.
As a result of the Chernobyl nuclear power plant accident in 1986, large forested areas in Europe were contaminated by radionuclides. Extensive societal pressure has been exerted to decrease the radiation dose to the population and to the environment. Thus, in making abatement and remediation policy decisions not only economic costs, but also human and environmental risk assessment are desired. Forest remediation by organic layer removal, one of the most promising cleanup policies, is considered in this paper. Ecological risk assessment requires evaluation of the radionuclide distribution in forests. The FORESTPATH model(1,2) is used for predicting the radionuclide fate in forest compartments after deposition as well as for evaluating the application of the remedial policy. Time of intervention and radionuclide deposition profile was predicted as being crucial for the remediation efficiency. Risk assessment conducted for a critical group of forest users in Belarus shows that consumption of forest products (berries and mushrooms) leads to about 0.004% risk of a fatal cancer. Cost-benefit analysis for forest cleanup suggests that complete removal of organic layer is too expensive for application in Belarus.  相似文献   

5.
In rural areas where no public or group water schemes exist, groundwater is often the only source of drinking water and is extracted by drilling private wells. Typically, private well owners are responsible for the quality and testing of their own drinking water. Previous studies indicate that well owners tend to underestimate the risks of their well water being contaminated, yet little is known about why this is the case. We conducted a qualitative study by interviewing private well owners in Ireland to investigate their beliefs surrounding their water quality, which, in turn, inform their risk perceptions and their willingness to regularly test their water. Based on our findings we designed a theoretical model arguing that perceived control is central in the perceived contamination risks of well water. More specifically, we argue that well owners have the illusion of being in control over their water quality, which implies that people often perceive themselves to be more in control of a situation than they actually are. As a result, they tend to underestimate contamination risks, which subsequently impact negatively on water testing behaviors. Theoretical and practical implications are highlighted.  相似文献   

6.
商品林业发展中的产权和税费问题   总被引:17,自引:0,他引:17  
中国一方面有1亿公顷的宜林地还未被利用 ,有数以亿计的农村剩余劳动力 ,但另一方面又面临着森林资源的极度短缺:人均森林面积和蓄积仅相当于世界平均水平的20 %和12 % ,比土地资源和水资源更为匮乏;尽管总的森林面积和蓄积有所增长 ,但可采伐资源持续减少 ,一些地区已经无林可采。本文探讨了如何通过保护森林产权、减轻木材税费这些措施吸引人们投资投劳造林 ,达到既保护环境又发展农村经济的目的。一、中国的森林资源现状根据第五次森林资源清查 (绿色时报 ,2000) ,1998年底中国有1.59亿公顷①的森林 ,占世界第5位 ,…  相似文献   

7.
Changing Forest Disturbance Regimes and Risk Perceptions in Homer, Alaska   总被引:4,自引:0,他引:4  
Forest disturbances caused by insects can lead to other disturbances, risks, and changes across landscapes. Evaluating the human dimensions of such disturbances furthers understanding of integrated changes in natural and social systems. This article examines the effects of changing forest disturbance regimes on local risk perceptions and attitudes in Homer, Alaska. Homer experienced a spruce bark beetle (Dendroctonus rufipennis) outbreak with large-scale tree mortality and a 5,000-acre fire in 2005. Qualitative interviews and quantitative analysis of mail surveys are used to examine community risk perception and relationships with land managers pre- and post-fire. Results show a decrease in the saliency of the spruce bark beetle as a community issue, a coalescence of community risk perceptions about fire, and conflicting findings about satisfaction with land managers and its relationship with risk perception.  相似文献   

8.
In the areas of Latin American development economics and regional economic integration, one institution may be viewed as the focal point for most of the activity associated with these fields. This institution is the Inter-American Development Bank. It is important that the librarian charged with book collecting in these areas be familiar with the operations of the Bank and its publishing program. Significant as they are, however, the Bank's publications are not its only contribution to scholarly research and publication in development economics. The very nature of the Bank's lending programs provides a vital stimulus to government, business and academia to conduct their own independent studies in these fields. A careful reading of the Bank's annual reports should underscore the importance of this supportive role, and one might further suggest that the Bank, through its reports, can be seen as a bellwether of future research in those areas of the society and economy of Latin America in which it is so manifestly involved.  相似文献   

9.
For over 10 years, The Bank of New York has conducted formal Long Range Planning, to insure profitable long term growth. The planning system developed by the Bank relies heavily on Financial Planning and OR/MS Modeling has been an important part of this system. This paper describes the approach taken by the Bank to develop their system and the experience gained through managing the system.  相似文献   

10.
In the last two decades, the Portuguese Government has responded to the decline of centres of commerce. In this paper, we analyse the three different experiences of town centre management (TCM) schemes developed in Portugal since the turn of the millennium. The first two stages were developed using public sector initiatives and their impacts were limited. The third stage is still under way and is composed of private projects created by local business owners. Taking Lisbon as a case study for this third stage we conclude that these projects have become a pro-active means of intervention in Portuguese town centres.  相似文献   

11.
Englehardt  James D. 《Risk analysis》1998,18(6):755-771
Evaluating alternatives for restoring the Everglades involves analysis of a complex ecological and economic system for which current knowledge is limited. Uncertain benefits and impacts are analyzed probabilistically in this paper, following otherwise accepted principles of net present value (NPV) analysis. Ecological benefits and impacts were considered in monetary terms. Probabilities for selected uncertain parameters were found by maximizing entropy. The first ecological risk conceptual model for the Everglades ecosystem was developed to show ecological interactions. "Current Plans" for restoration involve discharge of phosphorus-enriched water from artificial wetlands to relatively pristine Everglades marshes for 3–10 years, risking conversion of the ecosystem to a eutrophic cattail marsh. For two of the three areas studied, alternative "Bypass Plans" were shown to avoid the loss of up to 3000 acres of sawgrass marsh at a cost that is probabilistically justified by the value of the ecosystem preserved. Sensitivity of the results to projected ecological changes, eutrophic marsh valuation, natural marsh valuation, and future values as represented in the discount rate, was examined.  相似文献   

12.
Under current conditions of accelerated socioenvironmental change in the Mediterranean forested landscapes, fire is one of the most critical and difficult risks to tackle within the region. This article summarizes the lessons learned from a project based on the participatory integration of qualitative local stakeholders' knowledge with expert GIS fire simulations carried out in the County of El Bages, Catalonia, Spain. First, in this article, a theoretical model--the forest fire circle--is presented in order to explain the reasons for the rise in the damage and frequency of forest fires in this Mediterranean area. Second, it describes the methodology developed and the stages followed during the project. Results show that: (1) the advocacy of old forest reactive management paradigm assumptions and practices based on uncontrolled forest succession can put vast wooded areas of the Mediterranean basin at critical risk; and (2) forest fire management approaches that ignore the crucial role of long-term prevention and local capacity building strategies have failed. In the final section, the content and the specific dimensions of the old reactive paradigm that has characterized forest fire risk management in Catalonia are discussed and contrasted with the possibly emerging preventative paradigm.  相似文献   

13.
In this paper we discuss the role of managerial agency in creating and shaping dynamic capabilities. We argue that dynamic capability is a phenomenon that enables a deviation to take place from the knowledge that otherwise would have arisen cumulatively from experiential learning. In addition we argue that to create major changes in patterns of knowledge accumulation managers need to be purposefully and creatively engaged. Such agency is identifiable in two cognitive processes we call creative search and strategic sense-making. We show how these processes differ in respect to their temporal orientation and relationship to uncertainty and by adopting a process perspective we demonstrate how creative search, strategic sense-making and experiential learning are complementary. This notion of complementarity implies that these processes, notwithstanding their contrasting characteristics, coexist together and serve to offer an explanation for how knowledge progresses at a firm level. Variance is introduced into the framework proposed through the identification of factors that influence the coexistence of creative search and strategic sense-making. The argument developed is illustrated through the use of an emergent technology context.  相似文献   

14.
Aggressive behavior in pet dogs is a serious problem for dog owners across the globe, with bite injuries representing a serious risk to both people and other dogs. The effective management of aggressive behavior in dogs represents a challenging and controversial issue. Although positive reinforcement training methods are now considered to be the most effective and humane technique to manage the risk of aggression, punishment‐based methods continue to be used. Unfortunately, there has been little scientific study into the various factors influencing whether dog owners choose to use positive reinforcement techniques to manage aggression in their dogs. As such, current understanding of how best to encourage and support dog owners to use these methods remains extremely limited. This article uses a survey methodology based on protection motivation theory (PMT) to investigate the factors that influence owner use of positive reinforcement methods to manage aggressive behavior, in an attempt to understand potential barriers and drivers of use. In addition, the article provides an initial exploration of the potential role of wider psychological factors, including owner emotional state, social influence, and cognitive bias. Findings show that the perceived efficacy of positive reinforcement methods and the perceived ability of owners to effectively implement the technique are both key factors predicting future intentions and current reported use. Future interventions should focus on enhancing owner confidence in the effective use of positive reinforcement techniques across multiple scenarios, as well as helping owners manage their own emotional responses when they encounter challenging situations and setbacks.  相似文献   

15.
Creative industries are firms which are characterized largely by the labour inputs of creative individuals, and surrounded by a degree of rhetoric as to their significance, but are a comparatively under‐researched sector. In this study we developed a research framework which integrated entrepreneurial cognition, entrepreneurial orientation and firm capabilities and explored the relationships between these variables, market conditions and the performance of small creative industry enterprises. The data suggest that high growth small firms are characterized by well‐developed internal capabilities allied to an entrepreneurial orientation and that the combination of the various sub‐attributes associated with each of these appear to be especially salient under conditions of intense competition. The policies, managerial and educational implications of the findings are discussed.  相似文献   

16.
《Risk analysis》2018,38(10):2105-2127
We assessed transboundary wildfire exposure among federal, state, and private lands and 447 communities in the state of Arizona, southwestern United States. The study quantified the relative magnitude of transboundary (incoming, outgoing) versus nontransboundary (i.e., self‐burning) wildfire exposure based on land tenure or community of the simulated ignition and the resulting fire perimeter. We developed and described several new metrics to quantify and map transboundary exposure. We found that incoming transboundary fire accounted for 37% of the total area burned on large parcels of federal and state lands, whereas 63% of the area burned was burned by ignitions within the parcel. However, substantial parcel to parcel variation was observed for all land tenures for all metrics. We found that incoming transboundary fire accounted for 66% of the total area burned within communities versus 34% of the area burned by self‐burning ignitions. Of the total area burned within communities, private lands contributed the largest proportion (36.7%), followed by national forests (19.5%), and state lands (15.4%). On average seven land tenures contributed wildfire to individual communities. Annual wildfire exposure to structures was highest for wildfires ignited on state and national forest land, followed by tribal, private, and BLM. We mapped community firesheds, that is, the area where ignitions can spawn fires that can burn into communities, and estimated that they covered 7.7 million ha, or 26% of the state of Arizona. Our methods address gaps in existing wildfire risk assessments, and their implementation can help reduce fragmentation in governance systems and inefficiencies in risk planning.  相似文献   

17.
We develop and apply a judgment‐based approach to selecting robust alternatives, which are defined here as reasonably likely to achieve objectives, over a range of uncertainties. The intent is to develop an approach that is more practical in terms of data and analysis requirements than current approaches, informed by the literature and experience with probability elicitation and judgmental forecasting. The context involves decisions about managing forest lands that have been severely affected by mountain pine beetles in British Columbia, a pest infestation that is climate‐exacerbated. A forest management decision was developed as the basis for the context, objectives, and alternatives for land management actions, to frame and condition the judgments. A wide range of climate forecasts, taken to represent the 10–90% levels on cumulative distributions for future climate, were developed to condition judgments. An elicitation instrument was developed, tested, and revised to serve as the basis for eliciting probabilistic three‐point distributions regarding the performance of selected alternatives, over a set of relevant objectives, in the short and long term. The elicitations were conducted in a workshop comprising 14 regional forest management specialists. We employed the concept of stochastic dominance to help identify robust alternatives. We used extensive sensitivity analysis to explore the patterns in the judgments, and also considered the preferred alternatives for each individual expert. The results show that two alternatives that are more flexible than the current policies are judged more likely to perform better than the current alternatives on average in terms of stochastic dominance. The results suggest judgmental approaches to robust decision making deserve greater attention and testing.  相似文献   

18.
A new multiple purpose park-lake facility is being developed in the sub urbanrural fringe of the Philadelphia, Pennsylvania metropolitan region. This study assesses the impact of the new park-lake upon surrounding land values in order to provide information for improved planning and decision making in such a context. The investigation covers the period from the time of land acquisition to that of near-completion of dam construction. The results of the study provide a “baseline” from which it will later be possible to assess changes in land values as the park-lake becomes fully operational as a major public recreational facility. Two geographic zones of impact on surrounding land value are identified by the analysis, and variations in the impact of the park-lake over time are identified. The importance of these new findings to public organizations involved in recreational decision making is discussed and areas for future research are suggested.  相似文献   

19.
In recent years there has been a marked increase in the study of the influence of leadership on creativity, and the effects of this relationship on organizational performance. While a number of explanations have been broached with regard to the positive effects of leadership on creativity, many of these studies propose different, and often contradictory, methods for leaders to achieve these positive effects on creativity within their organizations and work groups. Additionally, little work has been done examining the effects of leadership on highly creative people in fields requiring creativity. The purpose of this study is to examine two existing leadership theories with regard to their viability as models to explain creative performance of eminent scientists. Eminent scientists represent a population of leaders of highly creative individuals in a field that values the production of innovative ideas and products as a marker of performance. Ninety-three excerpts from the biographies of scientists were content coded for leader behaviors and performance criteria. The results of this analysis indicate that a model based on strategic planning and product championing may serve to explain the positive effects of leadership on creativity in a highly creative population.  相似文献   

20.
This article presents methodological solutions aimed at presenting the spatial distribution of flood risk and quality of spatial management (land use), indicating both those areas used reasonably and those requiring modification. The purpose was to identify key risk areas and risk‐free areas from the point of view of human security and activity on the floodplains, based on the examples of the vicinities of Wroclaw and Raciborz in the Odra Valley, Poland. Due to recent climate change, Poland has suffered the effects of severe flooding (e.g., 1997, 2001, 2010). The analyses conducted were motivated by the European Parliament and Council's recently implemented Directive 2007/60/WE, as well as by the demand for studies for local spatial planning. The analysis indicates that reasonably developed areas do not account for the majority of those studied, making up 36% of the Wroclaw area and 15% of the Raciborz area.  相似文献   

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