内蒙古自治区东乌珠穆沁旗巴彦呼热地区成矿规律研究   总被引：1，自引：0，他引：1       下载免费PDF全文

汪子杰  黄玉华  颜丙鹏 《山东国土资源》2014,30(7):9-13

东乌珠穆沁旗巴彦呼热地区属于大兴安岭成矿带的组成部分,即德尔布干成矿带南延与东乌旗-梨子山成矿带西南段交会部位,是大兴安岭有色金属资源勘查重点地区之一,该区成矿地质条件十分有利,矿化以铅、银、金多金属为主,前期工作已发现大型多金属矿床一处,矿点几十处,成矿条件较好,具有良好的找矿前景。本文通过分析区域成矿地质背景,总结了该地区的成矿规律,提出了找矿标志,建立了成矿模型,指导找矿。  相似文献   

外向型汉语学习词典编纂与研究综述     

尉晋焮  安华林 《广东海洋大学学报》2014,(5):70-75

外向型汉语学习词典是为母语非汉语的学习者编纂的学习汉语用的词典。20世纪80年代以来,词典编纂成果数量较多,品种较全,类型意识在逐渐增强,培育出了几部品牌产品;但在类型定位、用户意识、编纂技术、品牌观念等方面仍需加强。在研究方面,出现了一批较有分量的论文和专著,研究内容不断深入,研究队伍不断壮大;但与国外发达水平相比,仍有较大差距,主要表现在理论研究滞后于编纂实践、学科仍不成熟、学术流派尚未形成等。  相似文献   

Research Approaches for Understanding,Enhancing, and Monitoring Community Resilience     

Helen Ross  Fikret Berkes 《社会与自然资源》2014,27(8):787-804

The growing interest in the understanding of community resilience suggests a need for improving research approaches. This article reviews methods used to date, and suggests opportunities for expanding the range and efficacy of approaches used to understand, improve, and monitor the coupled social and ecological aspects of community resilience. We explore three potential foci: research approaches that enhance understanding of community resilience; those that help to improve community resilience through the research process; and the further development of methods to guide monitoring. Most studies have relied on mixed and multistaged methods, including in-depth interviews and case studies. We comment on the wide range of approaches used, and suggest others that could be valuable. There is particular scope for greater use of cumulative studies, historical or retrospective studies, participatory methods, and systems approaches, and a need for more methods that explore the coupling of social and ecological dimensions.  相似文献   

Knowledge to Action: Investigating Implicit Knowledge Production Models Held Among Forest Science Researchers     

Patrick W. Lyons  Laura Lindenfeld  Linda Silka 《社会与自然资源》2014,27(5):459-474

Criticisms of conventional knowledge production systems target their inability to address complex issues involving natural resources. In response, several researchers have adopted participatory research methodologies, incorporating more holistic problem-solving approaches that greatly value the knowledge and abilities of stakeholders. This case study explores forest science researchers' engagement strategies with stakeholders and how researchers can incorporate alternative approaches to knowledge production. We conducted semistructured interviews with forest science researchers, asking direct questions about how they define and work with stakeholders. Analysis revealed a great awareness among researchers for the need to cooperate with stakeholders and to incorporate their knowledge and abilities into the research process, as well as lamentations over structural, institutional, and resource limitations inhibiting the adoption of these practices. Our results reveal both how forest science researchers and institutes work with stakeholders and how they can better incorporate these stakeholder engagement methodologies into their research practices.  相似文献   

基于Web地理可视化分析系统的研究与设计     

何锡玉  张权  姚好海  江玮 《测绘软科学研究》2014,(4):89-94

气候研究涉及海量时空数据集,其产生和存储在分布式计算资源中。科学家们需要一个直观且方便地工具去研究分布式时空数据。地理可视化分析工具可直观且方便地访问气候资料、探索各种气候参数之间的关系及交流研究成果。本文对基于Web的地理可视化分析系统的研究与设计做一些探讨,阐述该系统具有以下功能：①互联网上海量数据集管理;②时空数据的2D/3D可视化;③气候研究中各种时空统计分析;④交互式数据分析和知识发现。此外,本文也为管理、分发、分析大数据提供参考。  相似文献   

数字地理空间框架市县一体化研究与实践     

林乾开 《测绘与空间地理信息》2014,(12)

在简述数字县域建设所面临形势的基础上,提出了开展“数字地理空间框架市县一体化研究”的必要性,概述了开展这一研究的思路,重点介绍了研究中的关键技术、研究成果在福建省数字县域建设进程中应用的实效,并对今后的应用前景进行了展望.  相似文献   

基于农村土地整治工作的规划设计思考   总被引：1，自引：0，他引：1  

陈斌  刘翔 《现代测绘》2011,34(5):60-61

开展农村土地整治工作有利于有效有效增加耕地面积,改善耕地质量,坚守耕地保护红线,提高农业综合生产能力,有利于优化城乡建设用地布局,提高土地利用效率。同时也是提升国土资源部门影响力的形象工程,大力推进土地整治工作,对江西这样的农业大省来说,更具有重要的意义。  相似文献   

基于HJ-1卫星的桥梁信息提取方法研究     

齐心  费昀  刘俊杰 《测绘与空间地理信息》2011,34(5):93-94,98,102

结合国产环境一号卫星遥感影像数据包含的多光谱和形态学特征信息,提出了一种有效提取该卫星遥感影像桥梁信息的方法。主要包括以下步骤：①图像预处理;②主成分分析;③图像区域分割;④数学形态学处理。利用该卫星数据进行的桥梁信息提取试验表明,该方法能快速、有效地提取影像中的桥梁信息,在交通行业中具有一定的应用价值。  相似文献   

The Role of Changes in the Annual Cycle in Earlier Onset of Climatic Spring in Northern China   总被引：2，自引：0，他引：2  

QIAN Cheng  FU Congbin  Zhaohua WU  YAN Zhongwei 《大气科学进展》2011,28(2):284-296

Climatic changes in the onset of spring in northern China associated with changes in the annual cycle and with a recent warming trend were quantified using a recently developed adaptive data analysis tool, the Ensemble Empirical Mode Decomposition. The study was based on a homogenized daily surface air temperature (SAT) dataset for the period 1955–2003. The annual cycle here is referred to as a refined modulated annual cycle (MAC). The results show that spring at Beijing has arrived significantly earlier by about 2.98 d (10 yr)-1, of which about 1.85 d (10 yr)-1 is due to changes in the annual cycle and 1.13 d (10 yr)-1 due to the long-term warming trend. Variations in the MAC component explain about 92.5% of the total variance in the Beijing daily SAT series and could cause as much as a 20-day shift in the onset of spring from one year to another. The onset of spring has been advancing all over northern China, but more significant in the east than in the west part of the region. These differences are somehow unexplainable by the zonal pattern of the warming trend over the whole region, but can be explained by opposite changes in the spring phase of the MAC, i.e. advancing in the east while delaying in the west. In the east of northern China, the change in the spring phase of MAC explains 40%–60% of the spring onset trend and is attributable to a weakening Asian winter monsoon. The average sea level pressure in Siberia (55°–80°N, 50°–110°E), an index of the strength of the winter monsoon, could serve as a potential short-term predictor for the onset of spring in the east of northern China.  相似文献   

4种再分析资料在中国区域的适用性研究进展     

谢潇  何金海  祁莉 《辽宁气象》2011,(5):58-65

根据NCEP/NCAR、NCEP/DOE、ERA-40和JRA-25共4种比较常用的再分析资料在中国区域的适用性研究作了概述。结果表明：4种资料既呈现出一定的共性,又在不同区域、不同时间尺度上差异显著;再分析资料的可信度普遍表现为在东部地区好于西部地区,低纬地区好于高纬地区,这可能与中国地面气象站点＂东密西疏＂有关;1979年前的再分析资料存在较大的不确定性,因此在应用该时段NCEP/NCAR资料研究长期气候变化研究时需要谨慎;再分析资料的不同要素在不同时间、不同地域的适用性不同,因此应分区域、分要素和分季节选择合适的资料。从不同角度探讨了再分析资料的优缺点及在中国区域的适用性,旨在为中国区域气候变化研究选用再分析资料提供借鉴和参考。  相似文献