征稿启事

《测绘标准化》是我国测绘行业唯一有关标准化方面的科技期刊,面向全国测绘行业。本刊旨在传播标准化信息,交流标准化经验,介绍标准化方面的知识和标准化的发展动态,以促进我国测绘事业和地理信息产业的发展。为了进一步办好《测绘标准化》,我们热诚欢迎广大读者提出宝贵意见及建议,欢迎大家踊跃来稿。     

兼顾主要元素和微量元素的部分熔融模拟计算方法及应用

本文提出了用线性约束条件下的非线性最优化方法,同时拟合部分溶融过程中的主要和微量元素;通过对新疆东天山某些花岗岩类成因的实际模拟计算,取得了良好效果;此方法解决了以往单纯考虑微量元素时难以解决的源岩矿物发生反应、残留相矿物含量难以确定等困难,赋予部分熔融程度更为实际的意义。     

河北省主要农作物生产时空格局变化特征及安全评价

阐述主要粮食作物的时空格局变化特征,对中国粮食安全决策意义重大。基于河北省县市近15 a (2001~2015年）的农业数据资料,采用分段线性趋势以及生产指标-产量波动系数来分析河北省主要粮食作物的时空变化特征,并对河北省粮食作物进行安全评价。结果表明：从产量与播种面积来看,近15 a河北省主要粮食作物变化趋势经历了由波动减少到稳步增长2个阶段,且变化趋势显著;从空间格局变化来看,大致呈由南向北逐渐递减的规律分布,其中不同农作物分布规律各有差异;从粮食安全方面来看,河北省70%以上年份粮食波动系数均超过中国粮食安全平均水平,粮食波动系数较高,粮食安全风险较大;但从人均粮食产量来看,安全程度相对比较乐观,粮食安全状况渐趋于平稳。研究可为河北省粮食生产时空布局的优化、结构调整与社会经济协调发展提供依据。     

博山国土资源分局“三个到位”落实土地矿产卫片执法检查

近日,淄博市国土资源局博山分局召开了卫片执法检查动员会议,全面启动了2010年度土地矿产卫片执法检查。2011年的卫片执法检查要求时间紧、任务重、政策技术性强、涉及面广,而且首次将矿产卫片列入了卫片执法检查的重要内容。为开展好这次土地矿产卫片执法检查,该局成立了由局党组成员、有关科室和各国土资源所主要负责人组成的领导小组,制定下发了卫片执法检查工作方案,     

《地震学报》征稿简则

一、《地震学报》是中国地震学会和中国地震局地球物理研究所主办的地震科学综合性学术刊物.主要内容包括:以刊登地震科学方面具有创新性的研究成果和技术成就为主,也登载一些与地震有关的地     

Long-Term Trend and Abrupt Change for Major Climate Variables in the Upper Yellow River Basin

On the basis of the mean air temperature, precipitation, sunshine duration, and pan evaporation from 23 meteorological stations in the upper Yellow River Basin from 1960 to 2001, the feasibility of using hypothesis test techniques to detect the long-term trend for major climate variables has been investigated. Parametric tests are limited by the assumptions such as the normality and constant variance of the error terms. Nonparametric tests have not these additional assumptions and are better adapted to the trend test for hydro-meteorological time series. The possible trends of annual and monthly climatic time series are detected by using a non-parametric method and the abrupt changes have been examined in terms of 5-yr moving averaged seasonal and annual series by using moving T-test (MTT) method, Yamamoto method, and Mann-Kendall method. The results show that the annual mean temperature has increased by 0.8℃in the upper Yellow River Basin during the past 42 years. The warmest center was located in the northern part of the basin. The nonlinear tendency for annual precipitation was negative during the same period. The declining center for annual precipitation was located in the eastern part and the center of the basin. The variation of annual precipitation in the upper Yellow River Basin during the past 42 years exhibited an increasing tendency from 1972 to 1989 and a decreasing tendency from 1990 to 2001. The nonlinear tendencies for annual sunshine duration and pan evaporation were also negative. They have decreased by 125.6 h and 161.3 mm during the past 42 years, respectively. The test for abrupt changes by using MTT method shows that an abrupt wanning occurred in the late 1980s. An abrupt change of the annual mean precipitation occurred in the middle 1980s and an abrupt change of the mean sunshine duration took place in the early 1980s. For the annual mean pan evaporation, two abrupt changes took place in the 1980s and the early 1990s. The test results of the Yamamoto method show that the abrupt changes mostly occurred in the 1980s, and two acute abrupt changes were tested for the spring pan evaporation in 1981 and for the annual mean temperature in 1985. According to the Mann-Kendall method, the abrupt changes of the temperature mainly occurred in the 1990s, the pan evaporation abrupt changes mostly occurred in the 1960s, and the abrupt changes of the sunshine duration primarily took place in the 1980s. Although the results obtained by using three methods are different, it is undoubted that jumps have indeed occurred in the last four decades.     

2012年全省气象局长会议 坚持改革创新 提高四个能力 不断开创龙江气象事业发展新局面

2012年1月16-17日。全省气象局长会议在哈尔滨召开。会议的主要任务是:认真贯彻党的十七大和十七届三中、四中、五中、六中全会以及中央农村工作会议和省委经济工作会议、全国气象局长会议精神,     

2010年全省气象局长会议

<正>2010年2月2-3日,全省气象局长会议在哈召开,各市(地)气象局长及分管业务副局长、办公室主任(或业务科长),省局直属各单位及机关各处室主要负责人,以及农垦、森工等行业部门负责人共100多人参加了会议。     

《岩矿测试》远程稿件采编系统

为适应网络化业务模式的变革,《岩矿测试》远程稿件采编系统(http:∥www.ykcs.ac.cn)于2009年1月1日正式投入使用,实施作者网上投稿/查稿、专家网上审稿的办刊模式。该系统方便作者投稿、稿件进度查询;方便专家审稿。《岩矿测试》远程稿件采编系统(http:∥www.ykcs.ac.cn)的主要特色是动态、实时、互动,具备读者和审稿专家信息检索、文献引用动态查询、信息发布等众多功能,必将有助于提高论文引用率和显示度。欢迎专家、作者访问、浏览。自2009年1月1日,《岩矿测试》的工作界面以远程稿件采编系统(http:∥www.ykcs.ac.cn)为主,请在该系统向《岩矿测试》杂志投     

中国地质学会前副秘书长、中国旅游地学开拓者陈安泽研究员逝世

中国地质学会前副秘书长、中国旅游地学开拓者、中国地质公园事业主要推动者、中国地质科学院研究员陈安泽先生因病医治无效,于2021年11月10日在北京逝世.