土地收购储备权力类型及价值分析

目前，我国土地权利取得主要有划拨和出让等方式。自从土地收购储备制度施行之后，在改变原有土地市场的缺陷，调节土地供求平衡，合理调整土地收益分配，优化土地资源配置，减少大量闲置土地的浪费等方面起到了积极的作用。但在具体工作中，土地收购储备作为具体情况已经客观存在，只是由于立法及管理滞后原因，尚未有应有地位。     

科技

岩溶山地土壤植被研究引入地学理论，我国科学家将首次对库姆塔格沙漠进行综合考察，我国发现世界上最大的似鸟恐龙化石，“北极河马”化石显示酷寒之地曾“温暖如春”，化石为证：恐龙也会游泳，美矿井中发现远古化石森林，     

山东招远平度断裂破碎带蚀变岩型矿石类型划分

山东招远-平度断裂破碎带蚀变岩型部分矿石类型划分与实际生产工作相脱离,该文在前人分类的基础上,提出新的定名方案,将矿石类型初步划分为含金蚀变花岗岩、含金黄铁绢英岩、含金硅化黄铁绢英岩、含金硅化岩、含金硅质石英脉和细脉含金硫化物。该划分方案使每一种矿石类型与金品位高低和SiO2含量的多少相联系,并作为找矿标志,操作性强,有利于矿山生产,加快了探矿进度。     

贵州三板溪水库诱发地震活动特征分析

研究了贵州省三板溪水库蓄水前后的地震活动特征与地震成因类型, 认为三板溪水库蓄水后出现的地震成因类型可划分为水库诱发构造型和地壳表层卸荷型。     

呼玛县五隆屯地区晚二叠世花岗岩地球化学特征及成区

呼玛县五隆屯地区出露的花岗岩岩石类型为中一中细粒花岗闪长岩,计有1个侵入体,呈岩株状产出。一、岩石及矿物学特征中一中细粒花岗闪长岩：中一中细粒花岗结构,块状构造,主要矿物为斜长石、条纹长石、石英和暗色矿物,粒度在0．6ram～5．0mm之间。斜长石40％～55％,条纹长石15％～20％,石英22％～28％。暗色矿物由黑云母和角闪石组成,含量10％。角闪石,绿色、褐绿色,     

Seasonal and inter-annual variations of the primary types of the Arctic sea-ice drifting patterns

Abstract Monthly mean sea ice motion vectors and monthly mean sea level pressure （SLP） for the period of 1979-2006 are investigated to understand the spatial and temporal changes of Arctic sea-ice drift. According to the distinct differences in monthly mean ice velocity field as well as in the distribution of SLP, there are four primary types in the Arctic Ocean： Beaufort Gyre＋Transpolar Drift, Anticyclonic Drift, Cyclonic Drift and Double Gyre Drift. These four types account for 81% of the total, and reveal distinct seasonal variations. The Cyclonic Drift with a large-scale anticlockwise ice motion pattern trends to prevail in summer while the Anticyclonic Drift with an opposite pattern trends to prevail in winter and spring. The prevailing seasons for the Beaufort Gyre＋Transpolar Drift are spring and autumn, while the Double Gyre Drift trends to prevail in winter, especially in Feb- ruary. The annual occurring times of the Anticyclonic Drift and the Cyclonic Drift are closely correlated with the yearly mean Arc- tic Oscillation （AO） index, with a correlation coefficient of -0.54 and 0.54 （both significant with the confident level of 99%）, re- spectively. When the AO index stays in a high positive （negative） condition, the sea-ice motion in the Arctic Ocean demonstrates a more anticlockwise （clockwise） drifting pattern as a whole. When the AO index stays in a neutral condition, the sea-ice motion becomes much more complicated and more transitional types trend to take place.     

俄罗斯(联邦)的铀矿资源

一、铀矿现状 苏联解体使原来属于前苏联的大部分铀矿床落入了“外国” 的版图，这里包括世界最大的中亚砂岩型铀矿省（哈萨克斯坦、乌兹别克斯坦）和乌克兰的碱交代岩铀矿省，使俄罗斯突然从铀资源丰富的国家沦为相对缺铀的国家。 根据国际原子能机构、国际核能机构及铀协会资     

宝清县锅盔山地区多金属矿地质特征分析

宝清县锅盔山地区已开展过1：5万水系沉积物测量、1：2万土壤地球化学测量、1：2万高精度磁法测量、1：2万激电中梯测量及1：2万地质简测工作。现正在使用槽探和钻探工程对异常和矿化蚀变带进行揭露与控制。通过上述工作,大致圈定了区内各类地质体的分布范围,并初步揭示了区内构造和蚀变矿化特征。     

硬石膏制硫酸废渣联产水泥——矿产资源节约与综合利用先进适用技术

一、技术类型该技术属非金属矿综合利用技术。二、适用范围该技术适用于以天然石膏、工业副石膏、脱硫石膏等为原料,生产工业硫酸并联产水泥。三、技术内容(一)基本原理以石膏为原料生产硫酸和水泥的基本原理:以焦炭为还原剂,使CaSO4高温分解成CaO和SO2气体。CaO与掺入生料中的SiO2、Al2O3和Fe2O3反应生成水泥熟料,SO2气体随同废气由窑尾排出,经净化、洗涤、干燥、转化。     

Soil evolution features of debris flow waste-shoal land

The reclamation and utilization of debris flow waste-shoal land plays an important role in the mitigation and control of debris flow hazards, which thus contributes a lot to the exploitation of insufficient land resources in mountainous areas and the reduction of losses caused by debris flow. The aim of this paper is to discuss the features and mechanism of soil evolution of debris flow waste-shoal land so as to search for the available modes of its reclamation and utilization. The Jiangjiagou Ravine, a typical debris flow ravine, was selected to study soil evolution features of debris flow waste-shoal land based on the analysis of soil physieochemical properties and soil microstructure. It was found that the soil evolution rates of debris flow waste-shoal land varied with different modes of reclamation. For the land which had been reclaimed for less than lO years, soil evolved most rapidly in paddy fields, and more rapidly in dry farmland than in naturally restored waste-shoal land. For the land which had been used for more than lo years, the soil evolution rates of dry farmland, naturally restored waste-shoal land and paddy farmland decreased in the file. For the same utilization period of time, significant differences were recognized in soil evolution features under different modes of reclamation. Analysis data showed that soil clay content, soil thickness, the psephicity of skeleton particles and contents of microaggregates （〈0.02 mm） in paddy farmland were all highest. Soil nutrients and porosity of dry farmland were better than those of paddy farmland and naturally restored waste-shoal land, and those of paddy farmland were superior to those of naturally restored waste-shoal land. Paddy farmland characterized by rapid pedogenesis, stable evolution and high utilizability was the priority candidate for the reclamation and utilization of debris flow waste -shoal land.