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历经8年的平果铝矿山用地改革试点目前完成,这一由国土资源部立项、广西壮族自治区国土资源厅组织实施的试点项目正在通过国土资源部组织的专家验收。
平果铝矿山用地改革的实质是：改征为租,企业从农民手中租地,从地里采矿,采矿后复垦造地,再还地于农民。平果铝采矿用地新模式充分兼顾了政府、企业和农民各方利益,理顺了采矿与土地、民生的关系和企业与农民、政府的关系,较好地化解了用地矛盾,是深化采矿用地使用制度改革的重大创新突破。对解决全国类似矿山采矿用地及其它临时用地问题提供了宝贵经验,具有示范作用和深远意义。 相似文献
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柴达木盆地第三系粘土矿物横向分布规律及控制因素研究 总被引：3，自引：0，他引：3
本文根据粘土矿物的类型、含量和组合特征了柴达木盆地第三系粘土矿物横向分布规律，发现上、下第三系尽管伊/蒙间层粘土、伊利石这两类主要粘土矿物从湖盆的边缘向中心分别呈现减小和增大的趋势，但其含量对比及矿物组合显然不同，下第三系以伊利石为主，主要有Ｉ＋有序Ｉ/Ｓ＋Ｃｈ＋Ｋ组合，其次为不含高岭石的组合；上第三系，湖盆边缘相带以Ｉ/Ｓ间层为主，并主要呈现无序Ｉ/Ｓ间层＋Ｉ＋Ｃｈ＋Ｋ组合，湖盆中心相区则与下第三系类似，但Ｉ/Ｓ间层的含量却要高一些。上述分布规律的控制因素主要有干旱-半干旱的古气候状况、不同的母岩类型、沉积环境和成岩作用强度等。 相似文献
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《浙江地质》2008,(3):30-30
3月1日,河南省召开的全省国土资源工作会议,今年河南省国土资源管理部门将会同监察厅等部门持续开展用地情况执法检查,对严重破坏、浪费和闲置土地的违法违规案件,要严肃查处并追究有关人员的责任。该省政府要求,要严格执行土地用途管理制度。严禁非法占用、租用农民集体土地进行非农业建设,严肃查处“以租代征”转用农用地的违法违规行为：严禁以各种名义擅自扩大农村集体建设用地规模。以及通过“村改居”等方式非法将农民集体土地转为国有土地;城乡建设用地增减挂钩试点必须符合土地利用总体规划、城市规划和乡（镇）村规划,确保城乡建设用地总量不增加,农用地和耕地面积不减少,坚决刹住乱占用农用地之风。河南省明确各级政府的行政首长是本区执行土地管理规定的第一人,对本行政区域内的耕地保有量和基本农田保护面积负责。对于不履行或不正确履行管理职责,造成耕地保护目标没有完成,违规违法用地批地等后果,或者对土地违法违规行为不制止、不组织查处或隐瞒不报、压案不报的,要依法追究有关领导人的责任。 相似文献
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为进一步适应国土资源管理新形势的要求,全面提升国土资源所管理和服务水平。进一步深化“内树正气、外塑形象”主题活动,健全全市各国土中心所规范化建设。近日。浙江省台州市国土资源局在六楼信息中心分两期对全市各国土资源中心所142名基层工作人员开展全市统一格式制定的台州市农用地转用和土地征收批后实施统计台账;台州市土地征收法定程序执行情况登记台账;台州市土地复垦整理开发及农村土地综合治理项目实施进展情况台账;台州市建设项目用地批后监管台账;台州市采矿管理台账;台州市地质灾害隐患点管理台账;台州市实际建设用地核查情况登记卡;台州市国土资源信访登记卡;农村村民建房用地台账;台州市矿产地块核查情况登记卡等十大国土资源综合台账逐个进行讲解信息系统培训。同时,分处室进行政策、法规、业务知识授课。图为2012年3月9日培训班授课现场。 相似文献
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随着经济社会的快速发展,人地矛盾日益突出,国家对土地特别是对农用地转为建设用地的管理更加严格,一些用地单位和个人就把目光瞄向了未利用地。从土地管理法律法规的立法本意来看,现行法律更多地体现了对农用地的保护,对未利用地的管理并未过多涉及。同时,从我国西部各省（区）现行的用地政策来看, 相似文献
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MAPGIS在国土资源大调查中的应用介绍 总被引：2，自引：0，他引：2
国土资源大调查离不开地理信息系统的应用,ＭＡＰＧＩＳ是科技部首推的国产地理信息系统软件,对ＭＡＰＧＩＳ功能的了解十分重要本文对ＭＡＰＧＩＳ数字地图库,专业属性数据库的管理和ＧＰＳ数据转换等方面的应用作了初步介绍,以使广大地质科技人员认识到ＭＡＰＧＩＳ的国土资源大调查中的重要作用。 相似文献
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应用管理软件在行政管理工作中的作用及投入的重要性,以采矿登记管理为例,通过对ＤＢＡＳＥ数据库编程和ＭＩＳ管理软件各自特点的分析比较,结论是：应用ＭＩＳ管理软件可进行方便,快速的检索,查询和分析,无须手工编程的繁琐。 相似文献
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2011年以来,东营作为落实省部合作协议的重要载体之一,紧紧抓住＂黄蓝＂两大国家战略实施的重大机遇,积极探索＂保红线、保增长,破瓶颈、解难题＂的新模式、新经验,加快构筑实施平台,已取得积极成果。一是坚持高点定位。站在未利用地全省统筹角度,制定了落实省部合作协议工作方案、未利用地开发管理改革探索试点方案,在充分发挥当地资源优势的前提下为协议的加快推进闯出了路子。二是坚持科学规划。站在＂黄蓝＂两大国家战略核心区和主战场的角度,根据适宜性评价将全市30.13万公顷未利用地划分为生态保护用地、宜农开发用地和建设用地,实行因地制宜、一体发展,为土地资源生态高效可持续利用提供了基础保障。三是坚持区域统筹。站在区域优势互补的角度,提出了设立＂建设用地备用区＂,打造＂飞地经济试验区＂的思路,目前正在组织土地勘界和制定试验区优惠政策。制订了《东营市土地综合整治项目管理暂行办法》,对土地整理中心进行了升格、 相似文献
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S. Viswanathan K. Surya Prakash Rao B. Mahabaleswar 《Journal of the Geological Society of India》2013,82(6):621-627
Komatiites are mantle-derived ultramafic volcanic rocks. Komatiites have been discovered in several States of India, notably in Karnataka. Studies on the distribution of trace-elements in the komatiites of India are very few. This paper proposes a simple, accurate, precise, rapid, and non-destructive wavelength-dispersive x-ray fluorescence (WDXRF) spectrometric technique for determining Sc, V, Cr, Co, Ni, Cu, Zn, Rb, Sr, Y, Zr, Nb, Ba, Pb, and Th in komatiites, and discusses the accuracy, precision, limits of detection, x-ray spectral-line interferences, inter-element effects, speed, advantages, and limitations of the technique. The accuracy of the technique is excellent (within 3%) for Sc, V, Cr, Co, Ni, Cu, Zn, Rb, Sr, Zr, Nb, Ba, Pb, and Th and very good (within 4%) for Y. The precision is also excellent (within 3%) for Sc, V, Cr, Co, Ni, Cu, Zn, Rb, Sr, Y, Zr, Nb, Ba, Pb, and Th. The limits of detection are: 1 ppm for Sc and V; 2 ppm for Cr, Co, and Ni; 3 ppm for Cu, Zn, Rb, and Sr; 4 ppm for Y and Zr; 6 ppm for Nb; 10 ppm for Ba; 13 ppm for Pb; and 14 ppm for Th. The time taken for determining Sc, V, Cr, Co, Ni, Cu, Zn, Rb, Sr, Y, Zr, Nb, Ba, Pb, and Th in a batch of 24 samples of komatiites, for a replication of four analyses per sample, by one operator, using a manual WDXRF spectrometer, is only 60 hours. 相似文献
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奥地利安东帕有限公司 《岩矿测试》2009,28(3):306-306
最新的流行病学研究表明,空气中较高浓度的悬浮细颗粒可能对人类的健康有不利的影响。根据该项研究显示,由于心脏病、慢性呼吸问题和肺功能指标恶化而导致死亡率的升高与细尘粒子有关。这些研究结果已经促使欧盟于1999年4月出台了限制空气中二氧化硫、二氧化氮、氧化氮、铅和颗粒物含量的法案(1999/30/EC),对各项指标包括对可吸入PM10颗粒的浓度提出了新的限制性指标。PM10颗粒是指可以通过预分级器分离采集的气体动力学直径小于10μm的细颗粒。目前研究的兴趣重点逐步偏向PM2.5这些更细微颗粒物,PM2.5这种颗粒物对健康有明显的不利影响。在欧盟指令2008/50/EC中,对PM10和PM2.5都提 相似文献
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E. M. Prasolov S. A. Sergeev B. V. Belyatsky E. S. Bogomolov K. A. Gruzdov I. N. Kapitonov R. Sh. Krymsky V. O. Khalenev 《Geochemistry International》2018,56(1):46-64
This paper reports the first results of a study of 11 isotope systems (3He/4He, 40Ar/36Ar, 34S/32S, 65Cu/63Cu, 62Ni/60Ni, 87Sr/86Sr, 143Nd/144Nd, 206–208Pb/204Pb, Hf–Nd, U–Pb, and Re–Os) in the rocks and ores of the Cu–Ni–PGE deposits of the Norilsk ore district. Almost all the results were obtained at the Center of Isotopic Research of the Karpinskii All-Russia Research Institute of Geology. The use of a number of independent genetic isotopic signatures and comprehensive isotopic knowledge provided a methodic basis for the interpretation of approximately 5000 isotopic analyses of various elements. The presence of materials from two sources, crust and mantle, was detected in the composition of the rocks and ores. The contribution of the crustal source is especially significant in the paleofluids (gas–liquid microinclusions) of the ore-forming medium. Crustal solutions were probably a transport medium during ore formation. Air argon is dominant in the ores, which indicates a connection between the paleofluids and the atmosphere. This suggests intense groundwater circulation during the crystallization of ore minerals. The age of the rocks and ores of the Norilsk deposits was determined. The stage of orebody formation is restricted to a narrow age interval of 250 ± 10 Ma. An isotopic criterion was proposed for the ore-bearing potential of mafic intrusions in the Norilsk–Taimyr region. It includes several interrelated isotopic ratios of various elements: He, Ar, S, and others. 相似文献
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Mining induced subsidence can significantly affect mining costs where major surface facilities and natural environment need to be protected. Overburden grout injection is a technology used to control coal mine subsidence by injecting the mine waste material extracted from the coal back into the inter-burden rock during longwall mining. The flowing slurry is here categorised as a nonlinear viscous cohesive (Bingham plastic) fluid. During longwall mining the grout slurry is pumped into the separated beds of the rock mass through a central vertical borehole, which is drilled deep into the inter-burden rock strata above the coal seam. However, a blockage can occur in the injection system when the slurry velocity falls below a certain critical threshold velocity, indicating a material phase change from cohesive-viscous to cohesive-frictional. In situ field injection tests through boreholes have been simulated at a smaller scale at the CSIRO laboratory in Brisbane by pumping the slurry through a radial disk (gap = 4 mm) from its centre. Laboratory experiments indicate a general, nonlinear, cohesive, viscous, frictional model for shear behaviour of the slurry, in which the material shear parameters are functions of the disk radial distance. Complete dimensional and dimensionless analytical solutions have been developed based on an approach related to Bingham–Herschel–Bulkley fluid mechanics. The derived formulae include relations for minimum pump pressure, local pressure and pressure gradient, wall shear stress, volume rate, velocity and velocity gradient. The theoretical results match the experimental measurements. The experiments covered slurries with maximum particle sizes of 0.5 to 2 mm with about 50% being larger than 100 µm. The viscosities at the various solids concentrations were measured with a standard torsion viscometer. This study differs from the previous research in several distinct aspects, namely, consideration of the variable shear parameters rather than fixed values, inclusion of total nonlinear behaviour, and implementation of a friction function to mimic behaviour of the deposited and consolidating stiff slurry, which can cause a significant pressure rise as a result of the increased shear resistance. 相似文献
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Between 1985 and 1991, two new mountain protected areas (MTNPA) covering more than 35,000 km2 and based on participatory management models — the Makalu-Barun National Park and Conservation Area, Nepal, and Qomolangma Nature Preserve, Tibet Autonomous Region — were successfully established through the collaborative efforts of Woodlands Mountain Institute and conservationists in China and Nepal. Characteristics common to both projects include the importance of establishing (1) effective rationales, (2) local support constituencies, (3) a senior advisory group, (4) a task force, (5) linkages between conservation and development, and (6) fund raising mechanisms. The lessons derived from the experiences of Woodlands Mountain Institute are of significant value to others in preserving MTNPA. Increased collaboration and communication between all interested in conservation, however, will remain a critical component for expanding mountain protected area coverage to throughout the world. 相似文献
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岩石密度和超高压岩石折返速率 总被引：1，自引：3，他引：1
在常温常压条件下对中国大陆科学钻CCSD主孔100-3000米岩心样品进行了密度测量,建立了密度连续剖面,并界定了不同超高压岩石的密度值。通过对比高温高压物性实验资料,岩石密度随着退变程度增强而降低,榴辉岩密度变化序列为3.52g/cm3→3.49g/cm3→3.07g/cm3→2.93g/cm3。超高压长英质岩石密度变化序列为3.00g/cm→2.80g/cm3→2.65g/cm3。上述实验资料是讨论不同折返阶段岩石所受浮力的基础,为研究折返速率大小提供了基本参数。本文通过折返板块运动平衡时,上浮力与粘滞力平衡这一关系式,定量研究了大陆俯冲板块的折返速率,认为密度差产生上浮力从而引起折返,温度对板块折返速率的影响最为显著;密度差大小、折返角度、折返板块大小对折返速率也有直接的影响。定量模拟分析表明,在温度高于850℃时,板块的折返速率可以超过100mm/a;当温度降至700℃时,折返速率则低于1.5mm/a。作者认为在折返早期,温度较高,板块快速折返至60-70km榴辉岩相深度;随着传导散热,温度降低,板块以较慢的速率折返至中下地壳。折返速率的估算表明,浮力是板块折返第一阶段(从>100km深部折返至<40km的中下地壳)的主要驱动力。 相似文献
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《Applied Geochemistry》2001,16(2):137-159
Five hundred and ninety-eight samples of terrestrial moss (Hylocomium splendens and Pleurozium schreberi) collected from a 188,000 km2 area of the central Barents region (NE Norway, N Finland, NW Russia) were analysed by ICP-AES and ICP-MS. Analytical results for Al, B, Ba, Ca, K, La, Mg, Mn, Na, P, Rb, Si, Sr, Th, U and Y concentrations are reported here. Graphical methods of data analysis, such as geochemical maps, cumulative frequency diagrams, boxplots and scatterplots, are used to interpret the origin of the patterns for these elements. None of the elements reported here are emitted in significant amounts from the smelting industry on the Kola Peninsula. Despite the conventional view that moss chemistry reflects atmospheric element input, the nature of the underlying mineral substrate (regolith or bedrock) is found to have a considerable influence on moss composition for several elements. This influence of the chemistry of the mineral substrate can take place in a variety of ways. (1) It can be completely natural, reflecting the ability of higher plants to take up elements from deep soil horizons and shed them with litterfall onto the surface. (2) It can result from naturally increased soil dust input where vegetation is scarce due to harsh climatic conditions for instance. Alternatively, substrate influence can be enhanced by human activity, such as open-cast mining, creation of ‘technogenic deserts’, or handling, transport and storage of ore and ore products, all of which magnify the natural elemental flux from bedrock to ground vegetation. Seaspray is another natural process affecting moss composition in the area (Mg, Na), and this is most visible in the Norwegian part of the study area. Presence or absence of some plant species, e.g., lichens, seems to influence moss chemistry. This is shown by the low concentrations of B or K in moss on the Finnish and Norwegian side of the (fenced) border with Russia, contrasting with high concentrations on the other side (intensive reindeer husbandry west of the border has selectively depleted the lichen population). 相似文献