Protecting Forests Through Farming. A Dynamic Model of Nontimber Forest Extraction

Forest resource extraction by local communities has been cited as a major impediment to the efficient management of protected forests. This paper develops a two sector dynamic model for farming and forest resource extraction by communities living in the forest periphery. The model assumes that land under forestry is constant and households allocate their time to farming and forestry. Comparative dynamic results suggest that higher prices for agriculture output, lower input prices, better knowledge of farming techniques and a lower discount rate may result in a higher equilibrium stock of forest resources. Tobit analysis with primary data collected from the Sinharaja forest in Sri Lanka provides supportive empirical evidence.     

岷江上游退耕还林的思考

岷江上游不仅是长江上游生态屏障障的重要组成部分，更是成都平原的重要生态屏障和水源生命线，该区拥有丰富的水、生物、旅游等可再生资源，但在退耕还林（草）生态建设中表现出退耕面积扩大化、国家补贴政策一刀切、经济林比重过大等问题。文章指出，应在克服上述问题基础上，通过调整农村产业内部结构、加大坡耕地改造、发展旅游业、水电业以及加强变通、通讯设施建设是实现经济可持续发展的最佳选择。     

森林资源资产组合随机控制模型及决策

在界定了森林生态资产与森林资源资产组合概念的基础上,构建和模拟了基于随机控制理论的森林资源资产组合模型,为森林经营管理者提出了相应的结论和建议:森林经营管理者可以根据最优采伐量与木材价格、补偿价格、成本系数、税率、贴现率、生长率等参数之间的关系,获得在市场经济变动条件下的最优森林资产组合,以保证森林资产净收益的稳定增长。     

亚热带地区国有林场可持续经营指标体系研究

通过实地调查研究,借鉴已发布的国际、国家、地区、经营单位层面森林可持续经营标准和指标,以森林可持续经营为主要内容,对亚热带地区国有林场森林经营、人力资源、社会资源等方面进行研究,构建出亚热带地区国有林场可持续经营指标体系,为亚热带地区国有林场可持续经营提供理论借鉴,期盼为制定亚热带地区森林可持续经营指标提供借鉴。     

乡土正当性与法律正当性在林权纠纷中的博弈——基于桂南两县一区的实地调查

通过背景梳析,在对林权纠纷中地方政府、国有林场、农户的调查后发现乡土正当性和法律正当性在当地林权纠纷中存在冲突,通过分析得出当前的林权纠纷问题具有普遍性和复杂性的基本特征;从制度经济学的产权角度和农户增收角度来看,农户的土地产权应得到维护。     

How forestland size affects household profits from timber harvests: A case-study in China’s Southern collective forest area

To improve the economies of scale in forest management and reduce the fragmentation of forestland, the Chinese central government has implemented a collective forest tenure supplementary reform since 2008. This has included a series of policies for motivating transfer of forestlands use rights among households in the country’s Southern Collective Forest Area (SCFA). However, to date there is little evidence that large-scale forest owners can earn more profits from timber harvests than small-scale forest owners in the SCFA. Using data collected from household surveys in the three of the SCFA’s provinces in 2016, this paper examines the return to scale of forestland ownership for timber harvests in this region, and how the scale of forestland ownership affects households’ profits from timber harvests. The results show a constant return to scale in timber harvests in the case provinces in China’s SCFA, that forestland area makes the most important contribution to the output of timber harvests, and that fragmentation of forestland results in lower profits from timber harvests. It appears that a moderate scale of forestland ownership should be identified for increasing the profits from timber harvests. With the rapid urbanization throughout China, an increase in off-farm employment among rural household members has a negative impact on timber harvests in the region. We argue that policymakers should realize the importance of encouraging the forestland transfers and improve the concentration of forestlands in the next stage of forest tenure rights reform in China’s SCFA.     

新疆林木种苗产业的市场结构、企业行为与市场绩效

市场结构和行为对市场绩效的影响机制是解释产业发展的重要前因。通过实地调研,分析新疆林木种苗产业组织市场结构-市场行为-市场绩效内在规律。结果表明,新疆林木种苗产业市场结构属于垄断竞争型市场结构;相当数量企业生产能力效率较低;市场种苗产业的生产能力利用率不高,市场绩效低下。基于结论,提出从优化市场结构,调整市场行为两个方面进行产业政策调整,进而提高市场绩效。     

日本掠夺东北森林资源对生态环境的破坏和影响 ——以松花江流域为例

日伪时期,松花江流域的森林资源遭受到日本侵略者的疯狂采伐。日本侵略者通过修建森林铁路将大量砍伐的木材运往国内,同时在东北地区开设一系列制材工厂以满足其战时需求。日本殖民者对森林资源的破坏严重影响了流域内的生态环境,造成水土流失加剧,旱涝灾害频发,大量珍贵动植物数量减少,松花江水质污染、空气污染严重,对战时乃至战后人民的生产生活造成极大危害。     

伊春森林生态旅游业发展问题研究

伊春森林生态旅游业经过多年的发展已粗具规模,在取得较好的经济效益的同时,也显露出不容忽视的生态环境及经济社会问题.为此,要实施政府主导战略;大力推进森林生态旅游产业的社会化,扩大区域合作;大力推进森林生态旅游产业的信息化;提升森林生态旅游业的产业化水平,构建特色旅游经济体系.     

依托资源优势发展哈尔滨市森林旅游业

哈尔滨市的森林旅游资源十分丰富,有众多的森林公园和自然保护区,但哈尔滨森林旅游尚处于起步和发展阶段,如何利用森林旅游资源,发展森林旅游,对其今后的发展战略和科学规划进行研究是目前亟待解决的问题.哈尔滨市应依托资源优势,大力发展森林旅游业.