产业结构演进与山区自然资源贡献度排序

通过建立资源与产业结构演进的一般模式,系统论述山区自然资源对区域发展的贡献.研究表明就经济增长的贡献度而言,传统意义上曾经在山区经济发展中起关键作用的矿产资源、耕地资源、衣食类及轻工业原料类生物资源,其地位和作用正在下降;而特色生物资源、旅游资源、水能资源正成为21世纪前期推动山区发展的新动力.进一步的定量分析表明,新时期山区资源对社会经济发展的重要度(贡献度)排序如下生物资源(0.239)＞旅游资源(0.204)＞水资源(0.198)＞土地资源(0.175)＞矿产资源(0.095)＞气候资源(0.089),这一排序结果亦可作为实施与确定中国山区资源开发优先次序的参考依据之一.     

浅析城市人居环境的评价及优化措施--以苏州市为例

在探讨人居环境的概念、分类的基础上,采用以某一年为基准的相对比较法,构建城市人居环境评价指标体系。并以苏州市区为例,对1995～2000年苏州市区人居环境进行了较为详细的分析与评价。分析结果表明,尽管1995年以来苏州市区人居环境质量有较大的改善,但改善速度仍落后于经济增长速度,并且生态环境和居住条件改善更为缓慢。针对这些问题,从城市规划、城市化发展战略、城市生态环境建设等方面,提出了优化苏州市人居环境的具体措施。     

神农架松柏镇水文地球化学研究

近年来，神农架松柏镇居民的结石病时有发生．并有增长的势头。为了解地质环境尤其是饮用水对病患的影响，笔者现场对患病情况以及各种水源(包括河水、泉水、自来水)的来源、化学组成和放射性进行了调查，运用水质常规方法和原子吸收光谱分别测定了离子和微量元素。同时，与地质环境类似的木鱼镇进行了对比调查。研究结果显示，两地地表水、地下水的各种指标均未超出“生活饮用水水源水质卫生标准”。(CJ3020-93)，且松柏镇水体中的放射性(γ射线)低于木鱼镇，而居民的患病率却远高于木鱼镇，可见松柏镇的水环境与居民的结石病无直接关系。     

Deep seismic reflection profiling revealing the complex crustal structure of the Tongling ore district

Deep seismic reflection profiling has been the dominant method for probing the deep structure of continental crust since the initiation of the COCORP in 1974[1,2]. Over the past few decades, this tool has been applied to diverse geologic features from the Appalachian area of the United States, to the Rhine-graben area in Western Europe and to the Tibetan Pla-teau[36]. In recent years, the Australian Geodynamic Cooperative Research Center ( AGCRC ) has applied this technique to the stu…     

乌鲁木齐市南湖某超市工程场地活断层探测研究

选用了浅层地震、地质雷达探测方法，同时结合微地貌测量、工程地质勘探、地基开挖验证等手段对乌鲁木齐南胡闹市区某超市工程场地及附近的活动断了探层进行测研究。研究结果确定了分布于该区的断层均属雅玛里克断裂带的次级断层，断层数目为5条．对这些断层活动性进行了评价，并对选用探测手段的适应性进行了初步分析和讨论．     

乌鲁木齐遥测地震台网测定的地震震级偏差初步分析

利用乌鲁木齐台网测定的2001—2003年469次新疆境内的地震,分别与新疆地震局编目结果进行对比,发现乌鲁木齐台网测定的平均地震震级与新疆地震目录给出的地震震级偏差较小,而台网内各子台测定的地震震级与新疆地震目录给出的地震震级相比,有些子台的震级偏差范围较大,有些则相对小些。计算得出乌鲁木齐遥测台网测定的平均震级偏差ΔM=0.104±0.268。     

关于铋矿床工业指标的讨论

根据目前铋矿床的勘查和开发现状,就铋矿工业指标的定位问题、铋矿工业指标实际应用概况、制定合理的铋矿工业指标在地质找矿中的意义等方面进行了讨论,认为目前执行的《矿产工业要求参考手册》(修订版,1987)对铋矿床的工业指标定位过高,不利于资源的充分利用。考虑到当前国内外铋矿资源的现状、铋矿床地质勘探和铋矿山生产实践,提出了评价铋矿床的建议工业指标:Bi边界品位(0.05～0.10)×10-2,最低工业品位(0.10～0.20)×10-2,矿床平均品位(0.30～0.40)×10-2,矿床综合利用品位(0.045～0.050)×10-2。     

Radiolarian Age of Chert-hosted Bedded Manganese Deposits from the Gen-otani Mine in the Tamba District, Northern Kyoto City, Japan

Abstract. Numerous bedded manganese deposits sporadically distributed throughout the Tamba district, southwestern Japan are intercalated within chert sequence. It is well known that radiolarian remains are commonly included in both bedded manganese deposits and host cherts. The Gen‐otani mine, one of these deposits, is located at Otani, Keihoku‐Shimonaka, northern Kyoto City. Chemical composition and age of the chert sequence at the mine were examined. Mainly according to SiO₂ and MnO contents together with lithology, the chert sequence is divided into three sections; lower massive chert, middle bedded manganese deposit and upper bedded chert sections. Radiolarian faunas consisting of middle Jurassic species such as Eucyrtidiellum unumaense, Dictyomitrella(?) kamoensis, Parvicingula dhimenaensis, Sethocapsa aitai, Sethocapsa kodrai, Transhsuum brevicostatum, Tricolocapsa plicarum, Unuma echinatus and others were extracted from both the middle manganese section and overlying bedded chert of the upper section. This examination reveals that the bedded manganese deposit at the Gen‐otani mine formed until Bajocian to early Bathonian (middle Middle Jurassic) in age.     

Glacial meltwater impounding: Evidence from the late Quaternary glaciogenic sediments in the Sangla valley, district Kinnaur, Himachal Pradesh, India

Sangla valley is situated at an altitude of ~ 3500 m above mean sea level and lies in the Kinnaur district of Himachal Pradesh. It is fed by river Baspa, a tributary of river Sutlej, that entrenches through the Quaternary glaciogenic deposits before emerging out of the valley and joining the river Sutlej at Karcham. The unstratified to stratified glaciogenic deposits consist of large boulders to fine silt and are classified into four major depositional facies on the basis of sedimentary texture and depositional environment. The facies — basal conglomerates, debris flow, water/sheet flow and laminites — represents the change in the environment of deposition from glaciofluvial to lacustrine and also the extent of the glacier to the valley floor during late Quaternary.     

外来投资与西部城市发展的关系——以兰州市为例

通过外来投资与城市发展关系的理论分析,研究了外来投资对西部城市发展的影响机制和影响模式,认为随着外资投入类型、方式和规模的差异,将对所投入城市造成不同程度的影响。并以兰州市为例,利用近年来兰州市外来投资的资料,分析了外来投资对兰州市发展可能造成的直接和间接影响,对前述理论进行了实证,最后提出了兰州市引进外来投资的政策建议。