Indigenous livelihoods, slash-and-burn agriculture, and carbon stocks in Eastern Panama

Improved crop–fallow systems in the humid tropics can simultaneously sequester atmospheric carbon emissions and contribute to sustainable livelihoods of rural populations. A study with an indigenous community in eastern Panama revealed a considerable biophysical potential for carbon offsets in small-scale slash-and-burn agriculture through longer fallow periods, improved fallow management, secondary forest development, and agricultural intensification. Based on soil and biomass carbon measurements, estimated annual sequestration rates amount to 0.3−3.7 t C ha^− 1 yr^− 1. Despite such potential, the economic benefits of initiatives aimed at sequestration of carbon in the community are likely to be rather unequally distributed within the community. Heterogeneity in livelihood strategies and uneven asset endowments among households – factors often overlooked in the ongoing carbon and sustainable development debate – are expected to strongly affect household participation. Indeed, only the better-endowed households that have also managed to diversify into more lucrative farm and non-farm activities are likely to be able to participate in and thus benefit from improved crop–fallow systems that capture carbon. Economic, ethical, institutional, and technical concerns need to be taken into account when designing community carbon management and investment plans.     

Commodity price cycles and heterogeneous speculators: a STAR–GARCH model

We propose an empirical commodity market model with heterogeneous speculators. While the power of trend-extrapolating chartists is constant over time, the symmetric impact of stabilizing fundamentalists adjusts endogenously according to market circumstances: Using monthly data for various commodities such as cotton, sugar or zinc, our STAR–GARCH model indicates that their influence positively depends on the distance between the commodity price and its long-run equilibrium value. Fundamentalists seem to become more and more convinced that mean reversion will set in as the mispricing enlarges. Commodity price cycles may thus emerge due to the nonlinear interplay between different trader types. The paper represents the authors’ personal opinion and does not necessarily reflect the views of the Deutsche Bundesbank.     

基于与中国企业500强对比的民企500强发展研究

为了深入地了解民企500强的发展状况，掌握民企500强的不足，依据《中华工商时报》每年发布数据。运用比较分析法来分析民企500强的优势与不足，探讨民企500强与中国企业500强差距大的原因，有针对性地提出民企500强进一步发展的对策具有重要作用。     

非正式制度视角下的集群企业信誉机制

产业集群中的企业信誉是保证产业集群有序运作的前提,要保证企业间高效的合作就必须有强有力的制度保障。与科层组织的信誉机制不同,产业集群中企业间的信任和合作主要是依靠非正式制度。文章从关系性嵌入、专用性投资,以及联合制裁三个方面对此问题进行了阐释。文章的结论是,产业集群中特有的信誉机制是导致产业集群竞争优势的一个重要原因。     

天津滨海新区区域经济特点、问题与对策

开发滨海新区是天津市经济发展的重大战略决策。经过7年的高速发展滨海新区已经形成了经济区的基本框架,成为天津市经济的龙头。本文综合分析了滨海新区的区域经济特点及其在发展过程中存在的矛盾和问题,在此基础上提出了加强区域经济持续发展能力建设的对策和建议。     

湖南八大公山国家级自然保护区国家重点保护和珍稀濒危植物区系分析

从属和种的水平上分析了八大公山国家级自然保护区国家重点保护和珍稀濒危植物的区系成分特点。结果表明,该保护区共有国家重点保护和珍稀濒危植物31科44属53种。其中有国务院1999年8月4日批准公布的I级重点保护植物4科4属6种,II级重点保护植物18科23属29种;有《中国珍稀濒危保护植物名录》(1987)和《中国植物红皮书》所列的濒危植物2科2属2种,稀有植物14科15属16种,渐危植物15科19属20种。其区系具有由亚热带植物区系向温带植物区系过渡,但热带性质比较明显的特点,而且中国特有成份是该区系中非常重要的组成部分。     

现行财务会计报告模式改进的探讨

随着信息技术的发展,现行财务会计报告模式正面临严峻挑战。如何建立适应经济发展和时代要求的财务会计报告模式已成为会计探讨的热点问题。本文从通用财务会计报告模式的分析入手,探讨了理想财务会计报告模式的设想和网络环境下以通用财务会计报告模式为基础,建立交互式按需报告模式的思路和联合按需报告模式的发展方向,旨在通过网络手段改进现行的财务会计报告模式,不断适应和满足信息使用者的需求。     

商业物流的现状调研和对策思考

随着市场竞争的不断加剧．作为企业第三利润源的物流越来越受到各个企业的重视。物流服务范围很广，可分为采购物流、生产物流、销售物流、商业物流和逆向物流等等。不同的物流服务对物流运营商提出了不同的要求。本文通过市场调研．对我国商业物流的现状进行系统的实证分析．总结商业物流的特性与发展规律，探讨商业物流存在的问题和面临的挑战，并提出改进的建议。     

基于价值链的作业成本法分析

本文针对传统成本管理方法存在的局限性,将价值链的思想引入作业成本法,用价值链分析帮助找出各作业与产品成本的联系;阐述了价值链在作业成本法中的具体分析步骤,为成本管理提供更准确的依据;从而有利于提高企业的成本优势,形成企业核心竞争力。     

科技信息机构发展中的问题及对策

从目前科技信息机构现状出发,阐述科技信息机构发展中出现的问题、机遇及对策。