地质岩芯科技资源科普化工作探索与实践——以自然资源实物地质资料中心为例     

张志伟  刘文卿  袁野  高建伟  苏桂芬 《地质论评》2024,70(1):362-366

岩芯科技资源科普化是打通地质科研—科普链条的重要途径,本文通过梳理我国岩芯科技资源现状,分析了岩芯科技资源科普化的现实意义,重点阐述了岩芯科技资源在向地质科普转化5个方面的探索与实践,提出了今后岩芯科技资源科普化工作应建立良好政策机制制度、转变科研人员观念、科技知识向科普转化水平、新技术新手段的应用以及做好科普活动的实施总结等5项工作建议。  相似文献   

Designation processes for marine protected areas in the coastal wetlands of South Korea     

Jungho Nam  Jongseong Ryu  David Fluharty  Chul-hwan Koh  Karen Dyson  Won Keun Chang  Hee-Jung Choi  Daeseok Kang  Jong Seong Khim  Chang-Hee Lee 《Ocean & Coastal Management》2010,53(11):703-710

The history of Korean tidal flat management and the process for designating Coastal Wetland Protected Areas (CWPAs) are described. Korean coastal wetlands have a long history of intensive use through reclamation for agricultural and industrial uses in the 20th century. Recently, the management policy is shifting away from intensive use towards the conservation of wetlands. This shift is caused by increasing public awareness of the value of wetlands and strong institutional support from the government. Since the Wetlands Conservation Act was passed in 1999, a total of twelve CWPAs have been designated through both top-down and bottom-up processes. Three designation paths are classified based on the relevant drivers, namely government-driven designations (seven CWPAs), local community driven designations (three CWPAs), and conflict resolution (trade-offs) driven designation (two CWPAs). The lessons learned from the designation of Korean CWPAs is that diversification of designation process could facilitate voluntary participation of local stakeholders and thereby enhance the chance of successful implementation of wise use strategy of tidal flats.  相似文献   

The role of eddies in solute transport and recovery in rock fractures: Implication for groundwater remediation          下载免费PDF全文

Seung Hyun Lee  In Wook Yeo  Kang‐Kun Lee  Won Sang Lee 《水文研究》2017,31(20):3580-3587

A better understanding of solute transport and retention mechanism in rock fractures has been challenging due to difficulty in their direct observations in microscale rough‐walled fractures. Six representative troughs in a rough‐walled fracture were selected for microscale observations of eddy formation with increasing flow velocity and its effect on spatiotemporal changes of solute concentration. This experimental study was enabled by a microscale visualization technique of micro particle image velocimetry. With increasing flow velocity (Re ≤ 2.86), no eddies were generated, and solutes along the main streamlines transported rapidly, whereas those near the wall moved slowly. A larger amount of solutes remained trapped at all troughs at Re = 2.86 than Re < 1. For Re = 8.57, weak eddies started to be developed at the troughs on the lee side, which little contributed to overall solute flushing in the fracture. Accordingly, a large of amount of water was needed for solute flushing. The flow condition of 1 < Re < 10, before a full development of eddies, was least favourable in terms of time and amount of remediation fluid required to reach a target concentration. After large eddies were fully developed at troughs on the lee side for Re = 17.13, solutes were substantially reduced by eddies with less amount of water. Fully developed eddies were found to enhance solute transport and recovery, as opposed to a general consensus that eddies trap and delay solutes. Direct inflow into troughs on the stoss side also made a great contribution to solute flushing out of the troughs. This study indicates that fully developed eddies or strong inflows at troughs are highly possible to form for Re > 10 and this flow range could be favourable for efficient remediation.  相似文献   

西秦岭北缘断裂带地震活动特征及近期发展趋势   总被引：1，自引：0，他引：1  

康来迅 《内陆地震》1989,3(4):314-322

本文讨论了西秦岭北缘断裂带在青藏高原东北部三次地震活动高潮幕和两次地震活动低潮幕中的作用和特点,以及地震活动的时空强特征和近期发展趋势。  相似文献   

裂变径迹定年标准化的研究   总被引：9，自引：0，他引：9       下载免费PDF全文

王世成  康铁笙 《地质科学》1994,29(1):78-84

用钴活化箔对SRM962标准铀玻璃进行了刻度,并比较了用钴活化范和用经过刻度的标准铀玻璃测量中子注量的定年方法,结果表明后者的定年结果优于前者,两者都有正系统偏差。利用磷灰石、结石和榍石的7种年龄标准样品和SRM962标准铀玻璃进行多次刻度,发现3种年龄标准矿物的Zeta常数基本一致,为327.4±7.8(±2σ).  相似文献   

作物叶面蒸腾与棵间蒸发分摊系数的计算方法   总被引：13，自引：2，他引：13       下载免费PDF全文

康绍忠  张富仓 《水科学进展》1995,6(4):285-289

依据在冬小麦和玉米冠层表面及冠层内部下方土壤表面的净辐射观测资料,建立了一个能较准确地反映叶面蒸腾与棵间土壤蒸发分摊系数物理变化规律的较实用的计算模式,结果表明,分摊系数(α)随叶面积指数(LAI)增加而增加,且具有明显的日变化,α在中午最小、早、晚稍大,这种日变化受叶气孔调节的影响。  相似文献   

试论我国现代地图学发展及其学科体系     

丁建伟  张荣 《测绘学报》1993,22(4):299-303

现代地图学空间活跃，发展迅速，并在我国科技领域和国民经济建设中发挥着积极的作用。它已经成为一门涉及多领域的综合性学科。本文在分析现代地图学发展特点基础上，运用系统科学方法论，对现代地图学及其学科体系进行系统分析，提出了现代地图学学科体系的基本框架和对我国现代地图学发展及建立学科体系的几点认识和建议。  相似文献   

微气象自动观测网     

张永丰  曹东生 《高原气象》1990,9(2):177-182

本文介绍利用计算机和通讯技术,建立局地网络的微气象观测系统,实现气象数据的自动采集、无线传输和集中实时处理。整个系统由一个中心站和五个(或更多)观测子站组成,是一个点到点的通讯网络。该系统为研究不同下垫面地气相互作用的观测实验提供了手段和方便。整个系统分两部份介绍,本文作一总体概述,第二部份说明数据采集和无线传输的具体实施。  相似文献   

论常德市地质构造特征及其对城市规划建设的影响     

康岚  罗胜富 《湖南地质》1990,9(1):19-27

本文采用大量实际资料,阐述了常德市的地质构造特征,从第四系及新构造运动的特点论述了常德市不同地段工程地质稳定性的差异,对该市灼规划建设布局和防震、防洪等方面提出了一些新的看法和建议。  相似文献   

新疆绿柱石宝石辐照致色机制的吸收光谱研究   总被引：1，自引：0，他引：1  

康雷雅  王天雕 《矿物岩石》1991,11(2):27-30

本文对新疆阿尔泰天然淡蓝、浅蓝宝石级绿柱石辐照前后及退火处理伴随着颜色改变的吸收光谱等进行了分析讨论,认为天然淡蓝、浅蓝色绿柱石经~(60)Co-γ辐照变成黄绿色,其原因主要归因于遂道中Fe~(2-)向Fe~(3+)的转变和八面体中Fe~(3+)和配位体O~(2-)的电荷转移。  相似文献