国有林区缓解贫困与生态保护共生协调度及应用研究

[目的]缓解贫困与生态保护的协调发展关系到区域的可持续发展问题,对国有林区缓解贫困与保护森林生态系统安全两者关系的分析研究是生态文明建设新阶段值得高度关注的课题。正确处理生态保护与林区经济发展互促互进具有重要意义,把国有林区缓解贫困与森林生态保护看作两个相互影响相互作用的生物体,用以揭示国有林区缓解贫困与生态保护之间的协调共生关系,以期为区域可持续发展提供理论基础和现实依据。[方法]以黑龙江省国有森工林区40个林业局为研究对象,选取2016年国有森工林区贫困与森林生态综合发展水平的14个指标数据,并运用主客观赋权法确定各指标权重,构建两子系统的共生协调度模型,探究国有森工林区各林业局贫困与生态的共生协调模式的空间布局和差异。[结果]黑龙江省国有森工林区共生协调模式呈现多样化趋势,经历互利共生、寄生协调、寄生冲突和互害竞争等关系,但寄生模式是黑龙江省国有林区贫困与生态的主要模式。[结论]黑龙江省森工国有林区要想实现缓解贫困与生态保护的共生协调,一方面需要加大对森林资源的保护的投入及抚育力度,另一方面森工企业要转变生产方式,优化林业产业结构,提高对林木资源的利用效率。     

The effect of cross-listing on the environmental,social, and governance performance of firms

We propose that cross-listing is associated with better environmental, social, and governance (ESG) performance, because cross-listed firms adopt ESG practices to mitigate the liability of foreignness (LOF) in foreign financial markets. Institutionalization processes have made ESG practices important for managing challenges associated with the LOF. With tests involving the S&P Global 1200 index, we show that cross-listing improves corporate social responsibility (CSR; i.e., social and environmental dimensions) but not corporate governance. The effects of cross-listing on CSR also depend on investor protection regimes of listing destinations: Stronger regimes correspond with poorer CSR performance, suggesting that they limit managerial discretion.     

Social protection for enhanced food security in sub-Saharan Africa

This paper identifies several positive synergies between social protection programmes and enhanced entitlements to food. One function of social protection is to manage or reduce vulnerability. Several instruments are reviewed – weather-indexed insurance, public works programmes, emergency food aid and buffer stock management – which aim to stabilise income and access to food across good and bad years, or between the harvest and the hungry season. Other social protection instruments aim to raise household income and crop production, for instance agricultural input subsidies or input trade fairs, as well as public works projects that construct or maintain physical infrastructure such as rural feeder roads. This paper also argues that entitlements to food can be strengthened if social justice principles are introduced to the design and delivery of social protection programmes. Examples reviewed include rights-based approaches such as employment guarantee schemes, community-based targeting and demand-driven accountability mechanisms. The paper concludes by arguing for a comprehensive approach to social protection that will achieve sustainable food security, by combining interventions that stabilise income or food production with those that raise income or food production, and are designed and delivered in ways that enhance social justice.     

岩溶地质钻孔桩二次成孔护壁法施工技术

通过对大湖下行联络线岩溶地质钻孔桩施工出现问题的论述,结合岩溶地质钻孔桩常用的处理方法,提出了适应本区域岩溶地质环境的二次成孔护壁法在钻孔桩施工中的应用,并得到了成功的验证。     

国企民营化与企业创新效率：促进还是抑制?

文章基于混合所有制改革的背景，从创新效率的视角考察了微观创新主体民营化前后创新行为的变化。研究发现，民营化抑制了企业的创新效率，企业的专利数量显著减少，这种影响在缺乏原国有大股东制衡、无系族的上市公司以及外部产权保护较弱的地区更加显著，而且相对于创业型企业，民营化企业的创新效率更低。进一步研究发现，民营化抑制企业创新效率的一个重要途径是关联交易显著增加、投资显著减少，民营化后非国有大股东更多地表现出掏空动机，减少了创新活动，降低了创新效率。文章的研究结论为理解民营化企业的效率提供了新视角，有助于我们正确认识和理解新兴转轨经济体的民营化行为，而且对于监管层如何推进混合所有制改革具有重要的政策启示。     

基于红外图像的林火识别方法及实现

森林火灾是一种突发性强、破坏性大且处置救助较为困难的自然灾害,会对森林、森林生态系统和人类带来一定危害和损失。早期的林火判别多基于温度、烟雾以及24小时图像监测实现,主观性强,标准单一,且误报率高。如何快速发现林火目标并及时报警扑灭,已经成为国内外学者研究的热点之一。文章基于红外热像仪,对大量森林背景及模拟林火状态进行了图像和温度数据的采集,首次提出了基于温度标准差方法进行热源识别的概念,得出了不同地点、不同时间段森林背景的温度标准差分布,以及明火温度在各阶段的波动范围,为林火的预防和监测提供了重要依据。同时,通过对干扰源进入前后的红外图像进行预处理和分析,对比目标热源的像素面积变化率及其圆形度,即可准确实现部分干扰热源的排除。实验结果证明,将此基于红外图像的热源初判原则与干扰源排除的规律应用于林火监测,方法简单有效,准确率高,对降低森林火灾的发生率,提高社会经济效益有着重要的作用。     

昆曲艺术创意推广研究

作为首批被列入“人类口头与非物质遗产代表作”的昆曲，在21世纪初又一次焕发出青春活力，受到国内外各界广泛观注。如何保护和推广昆曲这份瑰丽的遗产并使之回归到大众的生活中，是非物质文化遗产保护的重大课题之一。以昆曲艺术的文化内涵和社会使命为出发点，探讨如何以提升人们的欣赏水平、审美趣味、生活品质为目标，通过传统与现代的融合来推广昆曲。     

技术性贸易壁垒与中国高技术产品出口——基于扩展贸易引力模型的经验分析

本文基于扩展的贸易引力模型，使用2000~2015 年中国同22 个贸易伙伴国的面板数据，并引入和技术性贸易壁垒以及高技术产品密切相关的知识产权保护这一变量，实证考察进口国TBT 对中国高技术产品出口的影响。结果表明：（1）进口国实施 TBT 或进行知识产权保护均会抑制中国高技术产品的出口，但抑制作用并不显著；（2）若进口国将TBT 和知识产权保护相结合形成更为隐蔽的技术性贸易壁垒，将会显著抑制中国高技术产品的出口；（3）中国高技术产品出口呈现行业差异，其中医药制造业受到的抑制效应最大；（4）由于技术模仿和产品同质化现象的存在，中国高技术产品出口会在中高收入国家遭遇更为严重的TBT，对出口的抑制效应会更大。中国应将知识产权保护政策作为应对进口国TBT的一种补充，在保证高技术产品贸易健康发展的同时推动出口产业向中高端发展。     

Alternative farming and collective goals: Towards a powerful relationships for future food policies

Based on the significant amount of literature on the concept of spatial, ecological, and social embeddedness in the Alternative Food Networks (AFNs) research, this study describes the main dynamics related to the involvement of non-conventional farmers in their collective ideas and actions.With a comparison between two European regions: Sardinia and the Community of Madrid, the paper identifies different styles of behaviour among organic producers, whether or not supervised by a control body, and highlights the differences and similarities regarding their ideas about how alternative agriculture has an impact on the environment as well as society. Eco-economies and ecopreneurship are also considered. The aim is to see if, and to what extent, these ideas have a collective character, going beyond the limits of the single farm to reach a regional scale and, thus, if there is a basis for the development of future food-related planning policies. Through the information provided by semi-structured interviews, farmers have been divided into categories according to their degree of embeddedness, described through the main themes that emerged during the interviews. Every farmer has been included in only one category according to his or her main preference, which does not imply the ab-sence of a positive attitude towards other categories.The study aims to contribute to the understanding of how AFN values and methods can boost the improvement of biodiversity and landscape conservation through collective actions which have the power to boost and develop rural initiative at a regional scale.     

重庆生态链下的乡村旅游可持续发展研究

[目的]近年生态链概念被广泛的应用到农业、林业、工业、环保、文化、教育、经济等领域,以生态链的视角观察及研究乡村旅游可持续发展意义重大,借此为重庆市休闲农业可持续发展提供理论指导。[方法]文章采用综合分析法,引入自然生态理论对重庆乡村旅游可持续发展开展研究。[结果]重庆市乡村旅游发展迅速,但与全生态链建设需要相比,还存在生态环境、区域生态和产业生态方面的差距;乡村旅游想要更好地发展,必须完成3个目标:(1)对生产和运营过程中的社会和自然的环境保护;(2)区分市场定位并建立区域旅游生态结构;(3)发展旅游上游产业链和理顺旅游下游产业链来构建产业生态链。[结论]政策性建议:(1)政府部门可以通过加强生产规范和产业管理特别是正向引导性管理加强乡村旅游业的发展;(2)政府部门可以通过做好信息和技术的服务,构建信息技术平台,保障专业技术发展和人才梯队建设加强乡村旅游业的发展;(3)通过资本信贷、管理和技术培训,竞争性奖励政策和"互联网+"等方面的政策支持提高乡村旅游的发展速度。