对含金目标体进行岩石地球化学找矿的方法效果

针对一般金矿矿体规模小,形成原生晕能力有限的特点,提出了“含金目标体”的概念,并运用于化探找矿实践和控矿地质条件研究。     

榆林地区黄土窑洞崩塌灾害的多发性原因及其防治对策研究

本文通过对榆林地区米脂、绥德、子洲、清涧、吴堡和榆林市黄土窑洞建窑环境进行考察,总结分析了在黄土介质中修建的土窑洞崩塌灾害多发性原因,并提出了可操作性的防治对策。该对策可广泛适用于我国黄土窑洞分布区。     

新时期国土资源规划工作的目标任务

从新世纪开始,我国进入了全面建设小康社会,加快推进社会主义现代化的新的发展阶段。目前,我国已进入了更加富裕的小康社会的建设期,经济结构的调整期,经济体制的完善期,西部大开发的关键期和加入WTO的适应期。     

山区城市承德适度人口容量研究

以多目标动态决策方法,对承德市双桥区、双滦区进行2000年的适度人口容量预测。根据测算分析:双桥区人口发展趋势已超出适度人口容量,可向人口容量较大的双滦区输导,以确保风景旅游区景观生态环境的稳定性。     

The Association of Geoscientists for International Development （AGID） ： Adapting to a changing world

It is just two years since a profile of AGID appeared in Episodes ( Vol 25, No 3, p. 218).At that time we recounted the many achievements of the organization, first established in 1974, but also noted that ‘an awareness of the relevance of geoscience to many aid projects, and the proliferation of NGO‘s, both large and small, working in the environmental and resource sectors has radically changed the world in which AGID seeks to operate‘. We also noted that the change has happened to such an extent that AG1D has ‘to address the question as to whether the time has come either for it to wind up its operations and retire gracefully from the international scene or to continue‘.     

The European Geoparks Network

The European Geoparks Network was established in June 2000 by four regions of different European Countries--France, Germany, Spain and Greece--with similar natural and socioeconomic characteristics. These four regions are rural areas, with a particular geological heritage, natural beauty and high cultural potential, all facing problems of slow economic development,     

The Working Group on International Borders——Geoenvironmental Concerns （IBC）

The Working Group on International Borders---Geoenvironmental Concerns (IBC) was established in late 2003 and operates under the auspices of The IUGS Commission on Geological Sciences for Environmental Planning (COGEOENVIRONMENT). The following is a brief report of the first year‘s activities of the IBC during 2003.     

1.2m望远镜卫星跟踪定位精度的实测与分析

用1．2m地平式望远镜加装的视频CCD、计算机图象数据采集卡及其运用数据处理软件，对2000年4月17日观测视角速度比较快的激光卫星Topex进行了实测及结果分析。每组资料数据为10帧图象，在当天晚上的跟踪观测过程中取得32组数据，用一个二次多项式进行拟合处理后的结果，再把计时误差引起的定位误差分离出来，余下为1．4〃误差视为望远镜的跟踪定位精度。为了提高跟踪定位精度，我们认为主要解决CCD计时误差即可。     

柴达木盆地东北缘地质灾害及防治

青海省柴达木盆地东北缘地貌类型复杂,新构造运动强烈,由各种内外应力造成的地质灾害具有类多、发生频繁等现象,集中反映在土地荒漠化、水土流失、草场退化、湖泊萎缩、地震、泥石流及滑坡等面,人类生存环境日趋恶劣。通过对该区各类地质灾害及生态环境现状进行评述,提出了治理建议。