陆生野生动物资源资产统计分类体系构建

野生动物资源资产化管理是生态文明制度建设的重要内容。目前野生动物的过度利用已经造成许多野生动物处于濒危状态。因此健全野生动物资源产权制度,提高野生动物资源的使用和保护效率是当前迫切需要解决的问题之一,而解决这些问题的关键就是对野生动物资源进行资产化评估。以陆生野生动物作为研究对象,界定其资源资产的概念,参考SEEA中心框架等内容,构建陆生野生动物资源资产统计分类体系。在划分野外和人工繁育两大类别的基础上,从功能角度将陆生野生动物资源资产分为经济资产、生态服务资产和文化服务资产三类。最后通过分析各种已有的资产评估方法,提出适合各类陆生野生动物资源资产的评估方法。     

用于陆地工业的增压锅炉设计改进

增压锅炉节能环保的优点使其具有良好的陆地工业应用前景。针对制造成本和技术要求高的缺点,提出使用罗 茨风机代替附加汽轮机的工作方案;改用锅壳式布置形式,降低增压锅炉炉膛出口烟温。研究结果表明以上改进措施可 以大幅降低增压锅炉生产成本,提高锅炉的承压及密封效果,解决耐高温材料限制。     

Terrestrial vertebrates in urban ecosystems: developing hypotheses for the Gwynns Falls Watershed in Baltimore,Maryland

We review the literature on terrestrial vertebrates in urban and urbanizing areas in terms of the new paradigm in ecology that focuses on the origin, spatial pattern, and current influences of habitat patches. Studies of terrestrial vertebrates have documented differences in species composition along an urban-rural gradient and have identified some of the key land use features associated with these differences. We use information from a database developed for the Gwynns Falls Watershed in Baltimore City and County, Maryland to demonstrate how a study of forest-dependent breeding birds could be used to identify mechanisms that account for differences in the bird communities of forest patches in urban areas, and to provide useful information to planners and managers involved in wildlife conservation and management.     

读易见天心——地球生命新视野

《周易》的阴阳哲学观是宇宙统一理论的基础,是解读地球生命体诞生、发展、变化直至终结的密码。太阳系诞生论和地球生命假说是一个哲学范畴内的命题,与神创论、进化论、泛生论不同的生命起源说认为,地球上的一切生命来源于母宇宙,起源于地球胎里的生命体,繁衍在海洋母液中。从地球的脊骨——大洋中脊处涌出的轻者上升、浊者下沉的地幔岩浆即是地球生命体的太极,太极所生两仪即新洋壳,四象对应岩石四象、地壳四象等,八卦对应地球八大板块和岩石八层序列等。以走向基本呈S型的大洋中脊为界,地球分为两个半球——太极图准确而形象地描绘出地球生命体的画像,刻画了太极神鱼的构造、形态、颜色。以太平洋中脊为脊骨,从南极到北极形成一条较大的黑色神鱼;以大西洋、印度洋中脊为脊骨,从北极到南极形成一条相对较小的白色神鱼。地球生命体拥有防御、信息、新陈代谢、散热、神经等诸多子系统。地球生命假说是人类面临哲学思维和科学发展的前奏,认识地球生命是人类认识宇宙、生命的第一步。     

蓝色经济区战略下海陆产业劳动力流动的就业效应分析

近年来国家对海洋经济的发展越来越重视,而涉及这一方面的研究还处于初步阶段,研究海陆产业劳动力流动问题更少。文章从劳动经济学角度分析蓝色经济区战略下,劳动力要素在海洋产业和陆域产业之间流动的影响因素以及经济效果。比较分析海陆产业发展水平、海陆产业劳动生产率、海陆产业比较劳动生产率等方面,挖掘劳动力要素流动的决定因素,最终为构建蓝色经济区献计献策。     

CDTTB标准中LDPC码的编码结构设计

中国数字地面电视广播标准采用准循环低密度校验码(QC-LDPC codes)作为其信道编码的内码。根据该类LDPC码的准循环特性,该文提出了一种基于流水线方式的半并行编码结构,可实现发射机中LDPC码的多码率编码;在满足系统净荷数据率的前提下,合理规划多种寄存器,充分复用硬件资源,降低其消耗。使用编程门阵列(FPGA)实现此结构,通过验证,证明了该结构编码结果正确,资源利用率较低。     

Ecological Risks to Fossorial Vertebrates from Volatile Organic Compounds in Soil

The past several years has seen an increased awareness of the need to conduct ecological risk assessments (ERAs) for hazardous waste sites. One technique used in ERAs involves estimating contaminant exposure to individual animals of selected species, which is then compared to a reference dose derived from the literature. Exposure estimates are conducted on those species which are representative of the different trophic levels found at the site. In many terrestrial systems, fossorial (burrowing) vertebrates are found in both lower and upper trophic levels. As part of the ERA conducted for Site 300, Lawrence Livermore National Laboratory's high-explosive test facility, contaminant exposures were estimated for fossorial and nonfossorial vertebrates spanning two trophic levels. The results of the evaluation revealed that a significant pathway by which fossorial vertebrates could be exposed to trichloroethylene in soil was through the inhalation of contaminated subsurface burrow air. This was the first time that the importance of this ecological exposure pathway has been recognized. The results of this analysis suggest that further research into the ecological significance of subsurface burrow air contaminated with volatile organic compounds is warranted.     

沿海地区陆域与海洋产业结构的协同演进趋势及空间差异研究

陆域与海洋产业的协同发展是有效开发海洋资源、提高沿海地区经济增长效率的有效途径。本文对沿海地区陆域与海洋产业结构的协同演进趋势及省际差异分析后,认为沿海地区陆域与海洋产业结构的协同演进路径相似,协同发展趋势逐渐增强,空间差异不断缩小。在此基础上,从五个方面提出了促进陆域与海洋产业结构协同升级的相关对策。