论世界及我国火山旅游资源的开发利用

世界火山分布具有规律性。火山旅游资源具有广泛性和高品味性。火山旅游资源的开发利用需要具有科学的态度和综合性的手段。世界许多国家开发利用火山旅游资源的经济值得我们借鉴。     

资源环境与社会经济协调发展探析

文章首先回顾了资源环境与社会经济发展的理论，提出资源环境与社会经济协调发展内涵：一方面，要在资源环境承载力范围内发展社会经济，追求社会经济发展的最大化，另一方面，环境承载力是动态的，要依靠社会经济发展不断提高，这两个方面是相互作用、相互制约的。在此基础上，详细论述了资源环境与社会经济协调发展的内容,并从社会经济发展、资源环境管理等角度探讨了资源环境与社会经济协调发展的政策调控，通过建立节约型国民经济体系、深化资源环境管理，实现区域一体化，以保证资源环境与社会经济协调发展的实现。     

Groundwater regime and calculation of yield response in North China Plain: a case study of Luancheng County in Hebei Province

The groundwater table has been declining at a rate of 0.65 m/yr in Luancheng County since large scale groundwater extraction carried out in the 1960s. The drop of precipitation, substantial increase in agricultural output, variations of crop planting structure and construction of water conservancy projects in the headwater area all tie up with the decline of the groundwater table. On the basis of analyzing the hydrogeological conditions and the water resources utilization of Luancheng County, a three-dimensional groundwater flow model was developed to simulate the county’s groundwater flow through finite-difference method using Visual Modflow software. We divide the research field into four parts after analyzing the hydrogeological condition. Based on parameter calibration and adjustment using measured data, the hydraulic conductivity and specific yield were simulated. Using the calibrated model, we analyze the agricultural water saving potentiality and its influence on the groundwater. The results are as follows: (1) if we decrease the amount of water extracted by 0.14xl0⁸ m³, the average groundwater table of the five observation wells in December will rise by 0.33 m; (2) if we decrease the water by 0.29x 10⁸m³, the average groundwater table of the five observation wells in December will rise by 0.64 m; and (3) if we increase the water by 0.29 x 10⁸m³, the average groundwater table of the five observation wells in December will decline by 0.45 m. So we can draw a conclusion that controlling the agricultural water use is an important way to prevent the decline of groundwater table.     

The 3D simulation and optimized management model of groundwater systems based on eco-environmental water demand

Through the study of mutual process between groundwater systems and eco-environmental water demand, the eco-environmental water demand is brought into groundwater systems model as the important water consumption item and unification of groundwater’s economic, environmental and ecological functions were taken into account. Based on eco-environmental water demand at Da’an in Jilin province, a three-dimensional simulation and optimized management model of groundwater systems was established. All water balance components of groundwater systems in 1998 and 1999 were simulated with this model and the best optimal exploitation scheme of groundwater systems in 2000 was determined, so that groundwater resource was efficiently utilized and good economic, ecologic and social benefits were obtained.     

Economic Filters Applied to Quantitative Mineral Resource Simulations

The U.S. Geological Survey has developed a technique that allows mineral resource experts to apply economic filters to estimates of undiscovered mineral resources. This technique builds on previous work that developed quantitative methods for mineral resource assessments. A Monte-Carlo calculation uses mineral deposit models to estimate commodity grades and tonnages of undiscovered deposits. The results then are analyzed using simple estimates of capital expenditures and daily operating costs for a mine and associated mill. The daily operating costs and the value of the ore are used to calculate the net present value of the deposit, which is compared to the capital expenditures to determine whether the deposit is economic. Repetition of these calculations for many deposits produces a table that can be interpreted in terms of the probability of there being deposits that have anet present value exceeding some specified amount. Sample calculations indicate that applying economic filters to simulated mineral resources might change the perception of the results compared to presenting the calculations in terms of the expected mean gross-in-place value of the minerals.     

塔里木河下游地下水位与水化学成分关联度排序分析

根据2001年塔里木河下游第四次生态输水前后地下水位、水质变化的监测和取样分析资料。运用灰色关联分析法。对塔里木河下游地表生态输水前、后的地下水位与地下水化学成分进行了关联分析。分析研究表明，生态输水对地下水质的影响比较明显。在关联排序中。阴离子的SO4^2-、Cl^-以及阳离子的Ca^2 、Mg^2 与地下水位变化的关联性较强；pH值与地下水位的关联度最低。仅为0．534；矿化度与地下水位关联度最高,达到0．863。     

衡阳市生态环境现状及其改善对策

资源的不合理开发利用导致衡阳生态环境严重恶化。加强生态环境保护与建设对衡阳乃至湖南的可持续发展具有重要的意义。在分析衡阳市资源开发存在问题及其主要原因的基础上j探讨了在资源开发中建立可持续发展的良性生态环境的途径和措施，指出了要发展生态产业、开展生态环境的保护和建设，必须大力实施生态农业、生态林业、生态能源、生态旅游等生态经济工程，从而为衡阳市经济建设莫定坚实的生态可持续发展基础。     

遵义市城区及周边地带制砖页(泥)岩地质特征和开发前景

文章对遵义市城区及周边地带各地质时代的页（泥）岩已有资料进行了系统收集、归纳和适当的野外调研，认为区内制砖页（泥）岩层位可分为三类，第一、二类利用价值小或仅有部分可以利用，第三类则易于露采，大部分可利用，其层位为下奥陶统湄潭组和下三叠统夜郎组九级滩段，是区内可作制砖页（泥）岩利用最有开发前景的层位。同时对页（泥）岩的形成沉积环境作了简要分析，对其资源量进行了概略估算，经优化筛选，提出了10个供制砖厂企设置布局和矿源地选择之前需进行地质勘查的区块。     

资源性(矿产)资产的市场运作与贵州经济发展

该文以产权理论、价值理论为基础，阐述了资源性资产市场化运作的条件、方式和必要性、现实性，提出了建设和完善贵州资源性资产市场的相关政策建议。     

天然气水合物研究现状与展望

自20世纪90年代以来,世界各国对潜力巨大的新型能源———天然气水合物的研究做了大量的投入,已经取得了重大进展。本文在阐述国外天然气水合物的研究现状的同时,重点介绍了我国在天然气水合物勘探开发和实验模拟方面取得的一些进展,并展望其在能源、环境和其它研究领域的发展前景。