水库生态牧场绿色发展模式与技术对策的思考

水库渔业是我国淡水渔业的重要组成部分, 在保障优质水产品供给、维持生态平衡、促进渔民增收等方面发挥着重要作用。近年来, 随着资源与环境约束日益加大,水库渔业发展方式亟需转型升级。文中分析了水库渔业发展现状及面临的问题与挑战, 探讨了生态渔业发展的理论基础、绿色渔业模式和生态养殖技术方法, 提出了相关的建议。     

矿尘迁移致生态系统损害级联传播评价研究

为了解决矿尘迁移致矿区生态系统损害级联传播评价问题,采用矿尘迁移路径构建迁移网络,明确潜在的危害来源路径,给出了生态系统损害级联传播Petri网仿真模型(PN-EDCP)的定义,阐述了将迁移路径网络抽象为Petri网模型的一般方法。通过向Petri网模型中引入库所对象属性与方法的概念,使得模型真实含义清晰,具备对生态系统对象间逻辑关系及损害级联传播路径的描述和分析能力,能够将矿尘迁移现象损害生态系统的过程直观展现出来。在实例研究中,使用PN-EDCP模型完成了仿真分析,并对损害度变化趋势及与之相关的级联路径进行了深入讨论。     

液态金属新材料产业创新生态系统及其演化研究

液态金属具有不定型的液体形态,具有极佳的电性能和热力学性能,是电学性能和热力学性能要求较高的行业首选,美国NASA在2014年将液态金属列为新材料十大前沿方向之一。以液态金属新材料产业为研究背景,对液态金属新材料产业创新生态系统和创新生态系统演化等概念进行界定,构建了液态金属新材料产业创新生态系统的结构模型,从种群角度分析了创新生态系统的构成及不同创新种群间的关系,同时对液态金属新材料产业创新生态系统的演化机制和动力进行了分析。     

Peace with nature,or plants as indicators to the loss of humanity

Summary 1)Peace with nature means that human relations with other beings are controlled constitutionally within a community to which not only mankind belongs. Constitutionally restricted and in this sense non-violent, human domination is legitimate. 2) What we are allowed to do depends on who we are. Mankind is the species in which nature emerges to express herself in language, art and reason, and in doing so she moves herself forward with us. 3) How we should relate ourselves to nature also depends on our understanding of nature. Nature basically is acting nature, or creative power, and in this sense equally is the nature of the beings of nature. 4) Some artifacts are more natural and correspond to peace with nature better than others which are unnatural and violate peace with nature. Also in our fellow world, and even apart from man's influence, nature is whatought to be. 5) The technologically less advanced countries should not repeat the mistakes of the industrialized countries. The traditional pattern of industrial economy cannot be generalized to all peoples and violates peace with nature. 6) Plants are not only most sensitive indicators to environmental pollution but to the loss of humanity as well.     

网商生态系统的自组织和他组织

通过分析网商生态系统的历史形成和演化过程，揭示了网商生态系统自组织的本质属性，自组织行为是网商生态系统有序发展的内因和根本动力．政府和网络服务商的他组织行为有效地推动了系统的发展，他组织行为起辅助作用，通过自组织发挥效用．通过实证研究，揭示了现实世界中，网商的特点和需求．     

Study on Three-layered Grid Conceptual Prototype Using Ecological Network Computing Environment

Next generation grid systems where the emphasis shifts to distributed global collaboration, a service-oriented approach and information layer issues exhibit a strong sense of automation. Requirements for these systems resemble the self-organizing and the healing properties of natural ecosystems. Some key ecological concepts and mechanisms are introduced into the design for the third generation grid computing architectures by inspiration of this resemblance. Also, an Ecological Network-based Computing Environment (ENCE) platform is designed in this paper. Based on the ENCE platform, a grid-computing model of three-layered grid conceptual prototype that embeds the ENCE layers is presented from the viewpoint of implementation. The implementation model should be useful to the design of the third generation grid systems.     

Ecosystem valuation and the conservation of wild lands in vigorous economic regions:A case study in Jiuduansha Wetland,Shanghai

As the loss of wild lands to satisfy traditional economic development has become a global environmental problem in recent decades, using ecosystem valuation to estimate the total economic value (TEV) of an ecosystem has become popular. The main purpose of the ecosystem valuation is to strengthen the importance of ecosystems, and bring the ecosystem services into the traditional cost-benefit analyses of land use strategy. Some studies have illustrated that in remote areas, wilderness can produce more value if it is conserved, rather than converted to traditional agricultural or industrial uses. The same situation does not seem to exist in vigorous economic regions. Thus, a case study was conducted on the Jiuduansha Wetland in Shanghai using three approaches: the direct market valuation, the replacement valuation and the contingent valuation. The net present TEVs of three land use scenarios over one hundred years were evaluated. The results proved that simply based on ecosystem valuation, when compared with the other two scenarios of "conservation" and "selective use", "partial conversion into terrene (dry land)" of Jiuduansha might be the optimal scenario for the well-being of the people in Shanghai. Land price was identified as the most important factor. This situation is likely due to the scarcity of land available for traditional economic development in Shanghai. Thus, we speculated that the fate of the wilderness to "be destroyed" in vigorous economic regions could not be changed simply based on ecosystem valuation. However, the variety of interest by local residents in wilderness might enhance the TEVs of scenarios such as "conservation" and "selective use", and affect the valuation results. Since some important benefits of natural ecosystems remain unknown and others are underestimated, we suggested that any land use decisions regarding the Jiuduansha Wetland should be conservative and cautious as converting wetlands into terrene is an irreversible process.