周口市冬季灾害性天气预报方法

利用欧洲中心资料,采用相似预报方法,找出冬季周口灾害性天气预报指标,运用Fortran语言和V isualFoxpro语言编程,建立了逐日寒潮和强降水天气预报方法。     

测绘单位工资总额与“工效挂钩”方案初探

本文主要介绍了测绘事业单位“工效挂钩”的概念,形式,特点及实行“工效挂钩”制度的意义,同时,还论述了测绘事业单位实行“工效挂钩”的具体操作及应注意的问题。     

内蒙古:深挖用地潜力促发展

内蒙古自治区国土资源厅紧紧围绕全区经济社会发展大局,创新管理,采取深度挖潜存量用地、促进节约集约用地、限时审批等措施,破解用地难题,推进用地方式转变,提高审批效率,全力以赴推动自治区经济社会发展。面对用地指标严重不足的情况,内蒙古厅积极开展废弃居民点和工矿废弃地复垦调整利用试点、露天采矿用地按临时用地管理试点等工作,制     

高光谱遥感土地质量指标信息提取研究进展

高光谱遥感技术已成为提取土地质量指标的前沿技术之一。该文回顾了国内外高光谱遥感技术在土地质量指标提取中的研究进展,总结归纳了作为土地生态系统载体的土壤属性质量指标和反映生态系统结构功能的质量指标中的土壤有机质、全氮、土壤水分、铁氧化物、土壤重金属、土壤质地、土壤盐分、植被覆盖度、生物量、指示种10个指标的提取、敏感波段选择与反演方法,指出研究中存在的问题,最后展望了高光谱遥感技术在土地质量指标提取研究中的应用前景。     

Ecological indicators showing the succession of macrofauna communities in Sonneratia apetala artificial mangrove wetlands on Qi’ao Island at Zhuhai, South China

The Sonneratia apetala artificial mangroves in the intertidal zone of Da Wei Bay at Qi’ao Island of Zhu-hai, South China were chosen as the macrofauna succession plots while bare tidal flats of the same size were established as control plots in surrounding interference-free areas. Conventional change indicators of community structure, such as biomass and biodiversity, and indicators, such as exergy and specific exergy, which reflect the information change of overall communities, were used to analyze the succession of macro-fauna communities inS. apetala artificial mangroves. The similarities and differences in variation tendency of the different ecological indicators and their reflected ecological principles were compared. The results showed that from D-1 to D-1275 after plantingS. apetala, the biomass of the macrofauna communities first increased, which was then followed by an increase in the network relationship between the macrofauna communities （analysis of the Pielou evenness index and Shannon-Wiener diversity index）. The system in-formation （specific exergy） increased the slowest. Between D-1460 and D-2370 after plantingS. apetala, there was a decrease in biomass, network structure, and system information in the succession plots. After the decrease in the system information （the specific exergy）, there was a decline in the network relationships （Pielou evenness index and Shannon-Wiener diversity index）. Biomass was the last indicator to decrease. The similarities and differences among the different ecological indicators varied during the succession pro-cess, which reflected the relativity and differences among the indicators. This study suggested that, although the species diversity index can be an effective indicator of two types of changes （network structure and system information）, it was quite clear that species diversity measurement was not suitable for expressing the changes in biomass during the succession process. While exergy and specific exergy can provide useful information     

南黄海自生黄铁矿成因及其环境指示意义

样品为１９８９年采自南黄海，利用显微镜，电子显微镜，电子探针和化学分析方法，对自生黄铁矿的形态，成份和同位素特征进行研究，在此基础上就其成因与形成环境的关系进行初步探讨。研究结果表明，自生黄铁矿集合体形态可以分为聚莓，单莓和细粒３种，霉体特征的形态是早期成岩作用阶段沉积物随机堆积的结果，可以作了沉积成因黄铁矿的形态标型黄铁矿微量成份特征显示其沉积成因，同时亦表现对泥质沉积物地球化学背景值的继承性，     

规则波在缓坡上变形与破碎数值分析

通过在二维数值水槽内用边界元法直接求解Laplace方程,对规则波在缓坡上的变形及破碎进行了数值计算。分析了不同底坡及采用不同底摩阻系数时规则波的破碎特征,并对规则波破碎的极限坡度进行了研究。重点分析了规则波破碎时海底坡度、底摩阻系数及波形不对称性对破碎指标的影响。     

公路雪崩危险指标与雪崩灾害评价：以伊（犁）焉（嗜）公路巩乃斯沟口至艾肯山？

雪崩危险指标是评价雪崩对公路危害程度的主要依据之一。利用已有资料对伊焉公路巩乃斯沟口至艾肯山隘段的雪崩危险指标进行了分段计算，结果表明，该路段雪崩危险指标在０．０２２－２．６８５范围内，与国外资料相比，属于小量级，其主要原因是车（人）流量小。同时，利用上述计算结果并结合该路段的雪崩危害史，进行了雪崩灾害评价，评价结果反映在该路段灾害程度划分图上。     

中国金矿矿床工业指标研究

现行的金矿矿床工业指标管理及现行规范推荐的一般工业指标都不尽合理,造成在资源储量估算过程中,不同的矿山企业为了不同目的而选用不同工业指标的现状。本文中,笔者分析了现行规范推荐的一般工业指标存在的主要问题,以及工业指标的行政管理文件的执行和现实工作中金矿工业指标的运用情况后,认为应及时解决金矿工业指标规范规定及行政管理规定中的问题,使相关规定既能符合金矿特点,又能切实可行。这必将对维护矿产资源国家所有权益、促进矿产资源节约和综合利用、提高矿政管理水平起到积极的作用。