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1.
A voluntary conservation approach may reveal environmentally minded landowners who are willing to protect their lands with a compensation that is lower than the market price based compensation. Consequently, voluntary conservation programs may induce lower costs than traditional obligatory programs, such as a land taking. We compared the costs accrued from land purchasing with those from temporal land leasing. The costs included both direct costs, such as fees of land acquisition and compensation payments in land leasing, and transaction costs. We used a data set from a Finnish pilot program called Trading in Natural Values (TNV). In this new practice landowners and the authority that represents the Finnish government sign a fixed-term contract. According to these contracts the forest owners produce biodiversity services on their lands and receive a compensation payment. We developed a framework where land purchasing and leasing can be treated equivalently in terms of duration of time, so that their costs can be compared consistently. Land purchasing and leasing yielded quite similar cost levels. This indicates that the competitive bidding process in TNV has not worked properly.  相似文献   

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Despite calls for evidence-based policies, the process of using evidence in forest conservation policy implementation has remained unclear. In this paper, we focus on voluntary conservation and investigate complex ways to use evidence in implementation of the Forest Biodiversity Programme METSO in Finland. Data were collected via nine focus group discussions involving a total of 59 forest conservation stakeholders. Through interpretative qualitative analysis, we found that forest owners' and forest advisers' awareness of the voluntary instrument and the smooth interplay of knowledge types are important factors in implementing voluntary conservation. Knowledge use should be locally bound for policy implementation to be effective. Social relationships enable integrating local knowledge. Forest owners, advisers, authorities and other actors interpret scientific and other knowledges (and simultaneously co-produce new knowledge) in practical action. We conclude that educating forest advisers, informing forest owners, and increasing collaboration can enhance evidence flows from research to practice.  相似文献   

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文章阐述了建立自然保护区对加强生态建设具有的重要作用,总结了兴安岭自然保护区发展历程及存在的主要问题,在体制、生态补偿机制方面提出了建议。  相似文献   

7.
西藏天然林资源保护与可持续经营   总被引:2,自引:0,他引:2  
张敏 《森林工程》2002,18(6):1-2
探讨了西藏天然林资源的现状、特点、问题,提出了天然林资源的可持续经营措施。  相似文献   

8.
The transformation of the forest sector toward a bioeconomy calls for finding new sources of competitive advantage for the whole sector to retain its future viability. Non-industrial private forest owners are an important group of actors in the Finnish forest-based sector, as they supply 80% of industrial roundwood and control numerous other tangible and intangible forest-based ecosystem services. Our study analyzes forest owner views on the future use of forests in Finland, their perceptions on the evolving sectorial interlinkages and the position of the forest sector now and in the future bioeconomy. The data were collected in two phases: through telephone interviews of forest owners (n?=?278) and four focus group (FG) discussions (n?=?17), and were analyzed both qualitatively and quantitatively. The interviews showed that forest owners consider the highest potential for strengthening the sector toward bioeconomy to come from collaboration with energy and construction businesses. During the FG phase, we identified new possibilities founded on forest-based recreational services, cooperation with nature-based tourism and in increasing value-added wood products. In total, forest owners as a high-involvement group emphasized future value creation to be based upon forest ecosystem services and in diversifying the utilization of forests beyond the dominant raw material-driven mindset.  相似文献   

9.
Forestry in Sweden as well as in other European countries is characterised by intense and increasing international competition resulting in decreasing roundwood prices in real terms. This is especially the situation in the mountainous region of Sweden with long transportation distances between the felling site and the processing industries located at the coast. The question arises whether forestry must be run more extensively than at present to achieve the optimal rate of silvicultural activities compared with the amount of timber cut. With this in mind, optimising economic analyses have been performed at the stand level as well as at the level of forest estates. Results of the analyses reveal that more intensive thinning (more frequent operations) and shorter rotation periods would increase profit and offset continuously decreasing roundwood prices. Intensive pre-commercial thinning (cleaning) is especially important for profitability of the subsequent thinnings and the final cut. The large number of cuts during the rotation will increase logging costs. However, this will be more than offset by the increasing production of economically matured dimensions of timber, an effect that will be still more pronounced when using new harvesting technology. Moreover, frequent high thinning operations (thinning ‘from above’ or removal of dominant trees) will result in more dense wood close to the pith, more evenly distributed year rings, and fewer and smaller knots in the lower part of the stem — in other words more valuable roundwood which will justify high transportation costs. Several biological and technical aspects of these treatment programs are discussed in the paper.  相似文献   

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The main objective with this study is to investigate how different household characteristics, households' perceptions about the security of land use rights, and the households' proximity to forests affect the individual household's willingness to engage in activities that are meant to promote sustainable forest management in Burkina Faso. To achieve this objective we use a multinomial choice model of engagement (or non-engagement) in forest management activities based on household data from 4 villages surrounding the National Kabore Tambi Park in Burkina Faso. The results show that the participation by household members in forest conservation activities is mainly determined by the three variables that are related to policy: membership in community based forest management associations, security of land use rights, and training. The current training programs focus only on forest conservation practices. To be more efficient it should focus on increasing people's knowledge about the benefits due to conservation and the threats resulting from the lack of forest management. Furthermore the results indicate that improving land use right security would increase farmer's willingness to participate in forest management activities such as community work and forest surveillance. Thus particular attention should be paid to the prevailing system of land rights and its incentives, or disincentives, for promoting sustainable management of the forest resource.  相似文献   

11.
生态林保护利用以及补偿资金发放管理的对策探讨   总被引:2,自引:0,他引:2  
根据《福建省生态公益林管理办法》,重点阐述福安市生态公益林保护现状、限制性利用规划,以及生态补偿资金发放管理办法,并提出了6点对策。  相似文献   

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Abstract

Agri-environmental schemes' ability to increase the provision of environmental goods has been questioned because such schemes may pay landowners for something they would have done anyway. Contributing to this discussion, the aim of this paper is to investigate how financial compensation changes forest owners' declared willingness to set aside productive forest areas for nature conservation. The study is based on a survey of forest owner attitudes and ownership objectives in Denmark. First, it was analyzed how forest owners' declared willingness to set aside productive forest area for nature conservation changed when they were offered financial compensation. The majority of forest owners (64%) increased their willingness to set aside forest when offered financial compensation, whereas for others, compensation resulted in no change or, for a few respondents, even decreased the willingness. Hence, financial compensation may help to increase the provision of environmental goods but it is necessary to be aware of groups not motivated by financial incentives. Secondly, a binary logit model showed that the greatest likelihood of financial compensation increasing the motivation for setting aside forest is observed for owners who are young, female, live in the western part of Denmark and own farmland. Policy makers can use such information to target subsidy schemes at particular groups.  相似文献   

13.
Trees outside forests (TOF) are important elements of the landscape and they supply goods and environmental services such as commercial production of timber and fibre, domestic production of food and firewood, carbon sequestration, conservation of habitats and species (plants and animals), erosion control and soil and water quality improvement. TOF include different types of landscape elements: small woodlands, trees along linear features such as property boundaries, roads, railways, rivers and canals, hedgerows or linear forest formations, groups of trees and isolated scattered trees, which have also different ecological functions. The article focuses on the importance and role of linear forest formations (LFF) in the rural context, with special reference to the biodiversity conservation function. It presents the results of research done in the Veneto region, north-eastern Italy. The authors have designed a sampling scheme for LFF based on the Italian National Forest Inventory and tested an indicator system in order to evaluate the quality and biodiversity of the LFF. The indicators used are: LFF type and tree species composition, vertical structure and canopy cover, naturalness, introduced species and deadwood (standing and lying). The main advantages and limitations of the applied method are discussed.  相似文献   

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Dewar RC 《Tree physiology》1990,6(4):417-428
This paper discusses the general formulation of a model that describes carbon storage in a forest and its timber products as a function of the forest growth curve, the rotation period and the carbon retention curves for the timber products. After a number of rotations, the rotation-averaged quantity of stored carbon approaches an asymptotic value. It is shown that, when forests are managed for maximum sustained yield of biomass, the contribution to asymptotic carbon storage from timber products is about 2.5D/T* times the contribution from living trees, where D is the characteristic decay time for reconversion of timber products to carbon dioxide, and T* is the normal rotation period for maximum sustained yield. For a given value of D/T*, carbon storage can be optimized if the policy of maximizing sustained yield is relaxed. For D/T* < 1, as the rotation period is increased indefinitely, the asymptotic level of carbon storage increases monotonically toward the value of the carbon content of living trees at maturity, g(f). For D/T* > 1, there is a finite, optimal rotation period, T(o), greater than T*, for which asymptotic carbon storage is greater than g(f). As D/T* tends to large values, however, T(o) tends to T*, so that, in this limit, management for maximum sustained yield also ensures maximum carbon storage. From initial planting, the time taken to reach asymptotic carbon storage decreases as the normal rotation period, T*, decreases, but increases almost linearly with increasing decay time of timber products, D. This result qualifies the short-term value of any particular planting strategy.  相似文献   

15.
Restoration of protected areas in boreal forests frequently includes creating substantial volumes of dead wood. While this benefits a wide range of dead wood dependent invertebrate species, some of these are regarded as forest pests. Therefore, the risk of elevated levels of tree mortality in surrounding commercial forests must be considered. In a large-scale field experiment in southern Finland, we studied the effects of restoration treatments on the abundance of bark beetles within and in the vicinity of restored areas, in particular focusing on Ips typographus and Pityogenes chalcographus. The treatments applied to managed Norway spruce forests were controlled burning and partial harvesting combined with retaining 5, 30 or 60 m3/ha of cut down wood. We found that the abundance of bark beetles increased by both burning and harvesting with down wood retention, being highest where burning and harvesting had been combined. The actual volume of down wood retention had no significant effect. The effect of burning on the number of bark beetles along host tree boles was negative which suggests that burnt spruces provided a less suitable resource for bark beetles than unburnt dead spruces. The abundance of bark beetles along host trees also decreased with increasing volume of down wood retention. The abundance of P. chalographus was slightly elevated up to 50 m outside restored areas but the abundance was very low compared to that within the areas. The abundance of I. typographus was extremely low outside restored areas. We conclude that restoration treatments increase the abundance of bark beetles via increased availability of resources, but that the effect of burning is likely to be counteracted by decreased resource quality. Thus, burning might be the “safest” way to produce large quantities of dead wood. Furthermore, the fact that only few beetles were collected in adjacent areas suggests that restored areas pose little threat of serving as refugia in which bark beetle populations increase in sufficient numbers to attack live trees in adjacent forests. However, restoration actions repeated at consecutive years within a small area might enable the populations to grow to outbreak levels.  相似文献   

16.
How much to cut and to remain, as well as when to cut is an important decision-making issue in forest management. Unlike forest age, forest stock and harvest levels are applicable to both plantations and natural forests. This paper investigates the optimal forest stock and harvest with the consideration of both timber and non-timber benefits. The impacts of the discount rate, silvicultural cost, marginal timber benefit, and marginal non-timber benefit on the optimal forest stock and harvest are also examined. The results indicate that forest stock should be thickened when non-timber benefits are valued in addition to timber. The optimal steady state stock increases with a decrease in the discount rate, or an increase in marginal non-timber benefit. However, the impacts of the discount rate, marginal timber benefit, and marginal non-timber benefit on the optimal steady state harvest are ambiguous. In addition, a decrease in the discount rate has the same effect on the optimal steady state stock and harvest as an increase in the ratio of marginal non-timber benefit to marginal timber benefit. These theoretical results are illustrated through an empirical example of the US coniferous forests.  相似文献   

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森林生态补偿模型的研究   总被引:3,自引:0,他引:3  
在总结前人对森林生态补偿研究成果的基础上,针对已有研究的不足,构建了更为完善的森林生态补偿的模型。此模型由政府干预、市场机制和社会支持三维构成。文章还利用这个模型对我国的森林生态补偿现状进行了分析,明确指出目前我国森林生态补偿实施过程中应该解决的问题并对这些问题的解决提出了建议。  相似文献   

18.
Temperate and high-latitude forests are carbon sinks and play pivotal roles in offsetting greenhouse gas emissions of CO_2.However,uncertainty still exists for subtropical forests,especially in monsoon-prevalent eastern Asia.Earlier studies have depended on remote sensing,ecosystem modeling,carbon fluxes,or single period forest surveys to estimate carbon sequestration capacities,and the results vary significantly.This study was designed to utilize multi-period forest survey data to explore spatial-dynamics of biomass storage in subtropical forests of China.Jiangxi province,a region with over 60% subtropical forest cover,was selected as the case study site and is located in central east China.Based on forest inventory data 1984-2013,and the stock-difference and biomass expansion factor methods,the carbon storage and density,of arboreal forests,economic forests,bamboo forests,woodlands and shrubberies were estimated.The results show that carbon storage increased from 159.1 Tg C in 1988 to 276.1 TgC in 2013,making up 3.1-3.8% of carbon stored throughout China.Among the four types of forests,the amount of carbon stored was as follows:arboreal forest economic forest bamboo forest woodland and shrubbery.Arboreal forests accounted for 64.0-79.4% of the total.Forest carbon density increased from 21.2 Mg C ha~(-1) in 1984 to26.2 Mg C ha~(-1) in 2013,equal to 61.2-70.2% of the average carbon density of China's forests in the same period.Forest carbon storage in Jiangxi will reach 355.5 Tg C and 535.8 Tg C in 2020 and 2030,respectively,and forest carbon density is predicted to be 31.9 Mg C ha~(~-1)and 46.4 Mg C ha~(-1),respectively.As one of the few studies using multi-period data tracking biomass dynamics in Jiangxi province,the findings of this study may be used as a reference for other research.Using Jiangxi as a case study underlies the fact that subtropical forests in China have great carbon sequestration potential and have fundamental significance to offset global environmental change effects.  相似文献   

19.
Ecotourism is a sustainable use of forest resources, as compared to traditional uses such as logging or mining. However, whether turning forests into tourist sites can generate incomes comparable to the lucrative traditional activities is less clear. We estimated the recreational values of the Belum-Temengor Rainforest Complex (BTRC) in Perak, Malaysia, and compared it with the alternative of one-time consumptive revenues from logging. Based on data from an on-site survey of 367 visitors to BTRC, direct non-consumptive use values were computed using the individual travel cost approach and the truncated Poisson count data model. The annual direct non-consumptive use value was RM14.66 million based on the estimated number of nights spent and willingness-to-pay per trip. The future cash flows of recreation demand were RM614 million, RM970 million, and RM1.86 billion for the next 30, 50, and 100 years, respectively. Own-price, cross-price, and income elasticities of recreation demand were also computed. Visitors’ on-site travel cost, alternative-site travel cost, income, ethnicity (Malay), and marital status (Single) were associated with recreation demand. Our main conclusion is that the direct non-consumptive use values from recreation demand and other indirect use and non-use values from forest conservation exceed the one-time consumptive revenues from logging.  相似文献   

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