森林沼泽景观区中大比例尺化探找矿工作方法的研究--记大梁金矿的发现

大梁金矿是通过森林沼泽景观区开展1：50000和1：25000地球化学测量及综合地质工作而发现的,证明采用的森林沼泽景观中大比例尺化探方法是行之有效的.     

三峡水库区巫山新县城库岸综合治理设计回顾

三峡水库区巫山新县域库岸综合治理工程范围内涉及到滑坡、泥石流、塌岸等多种地质灾害。治理工程综合运用了多种技术与结构措拖，工程的复杂性和典型性在整个三峡库区具有极强的代表意义。笔者对整个治理方案的布置情况进行了归纳总结，并以翔实的第一手资料对治理工程设计过程中出现的几种典型问题一一进行了分析与论述．提出了相应的解决方案与合理化建议。结论认为，库岸综合治理工作，必须根据不同的地形特征，结合城区总体布局及沿线市政工程建设，综合考虑，有机结合，做到治理和利用相结合，最大限度地改善新城建设用地环境和城市生态环境。设计人员必须依照现场实际条件进行动态设计，确保工程方案合理、可靠、经济。文中讨论的问题和实践经检对同类工程具有一定的借鉴意义。     

Analysis of village accessibility and its impact on land use dynamics in a mountainous province of northern Vietnam

Surveys carried out in mountainous areas of northern Vietnam at research sites selected across a gradient of market integration, revealed strong relationships between the location of the village with respect to the national road network and the nature of its land-use systems, its poverty level and more generally its potential for development. We developed and tested in Bac Kan province a method to give an objective and quantitative definition of accessibility over a large geographic area. Accessibility maps integrated in a provincial GIS showed that despite recent improvements to the road network, some remote areas do not benefit from recent development.     

Land degradation in the source region of the Yellow River, northeast Qinghai-Xizang Plateau: classification and evaluation

Land degradation imposes a great threat to the world. It is not merely an environmental issue, but also a social and economic problem. Land desertification is among the main aspects of environment changes in the source region of the Yellow River. Previous studies focused on water resource utilization and soil erosion, but land degradation in the source region of the Yellow River even the whole Qinghai-Xizang Plateau received little attention. Based on the data obtained by field investigation and TM satellite images of 2000, this study provides the classification and evaluation information of the land degradation in the source region of the Yellow River. There are six types of land degradation in this region: water erosion in the northern mountains around the Gonghe Basin, sandy desertification in the Gonghe Basin and Upland Plain Area, aridization in the lower reaches, salinization in the Gonghe Basin, vegetation degradation in the intramontance basin and freezing and thawing erosion in the high mountains. The total degraded area is 34,429.6 km², making up 37.5% of the land in the study area. Finally, land degradation in the source region of the Yellow River was evaluated according to changes in the physical structure and chemical component of soils, land productivity, secondary soil salt and water conditions.     

华北地块东部晚中生代至新生代岩石圈不均一减薄与改造模式

本文综合运用不同时代幔源包体平衡温压对比、玄武岩地球化学性质对岩石圈厚度的反演以及不同时代岩石圈地幔地球化学性质的对比的方法，把华北地块东部岩石圈的减薄时间限定在晚中生代至新生代之间。减薄的机制可能是华北东部地区晚白垩世以来大陆岩石圈的拉张作用。由于机械性拉薄和热、机械和化学侵蚀作用，岩石圈厚度最终减薄到70km以下。但古老的岩石圈地幔并没有完全因减薄而消失，残留部分受到了来自软流圈物质的强烈改造，使其Sr、Nd同位素组成类似于软流圈，但Os同位素没有受到明显的改变。改造后的岩石圈地幔成为华北地块东部新生代岩石圈地幔的主体。在时空上，岩石圈的减薄具有不均一的性质。     

江西修水西部金矿成矿地质条件分析

通过对地层、岩浆岩、构造及化探异常与成矿关系的分析，认为江西修水西部地区具有寻找中一大型金矿床的潜力。     

地质遗迹旅游的可持续发展

从介绍地质遗迹及地质遗迹旅游的概念入手，着重就新时期地质遗迹旅游可持续发展的问题，提出了两种思路和相应的策略。     

“青藏高原南部空白区基础地质调查与研究”计划项目新成果、新进展

通过2 0 0 4年度各相关图幅的大力工作,在基础地质、矿产和资源等方面取得了大量实际材料,综合研究区域构造地层格架、青藏高原地质图和青藏高原南部火山岩及其地球动力学意义等,取得重要进展和新认识,在矿产资源、旅游和人文景观等方面也取得重要阶段性成果。     

西藏自治区乃东县劣布铜矿综合地质特征

文章介绍区域地质背景、矿区地物化特征，对成矿时代、流体包裹体特征进行初步研究，并指出找矿远景，希望对矿区的矿产勘查具有借鉴和指导意义。