酒西坳陷青西凹陷富油的地质-地球化学因素分析

青西凹陷下白垩统暗色半深湖相-深湖相的泥岩、白云质泥岩和泥质白云岩为研究区主力烃源岩,其沉积时为整体上处于封闭-半封闭强还原-还原环境的断陷湖泊,有利于有机质的保存和转化,且烃源岩厚度占地层比例均大于 5 0%以上,加之有机质类型以混合型为主、有机碳含量普遍大于 1%,为油田形成提供了重要的物质基础。喜山期构造运动形成了许多挤压逆断层、剪切性断层和构造缝,造成地层和构造叠覆,为有机质成熟、运移和聚集提供了动力和空间,从而为该区油藏的形成提供了有利条件.     

Spatial data mining system for ore-forming prediction

The authors designed the spatial data mining system for ore-forming prediction based on the theory and methods of data mining as well as the technique of spatial database, in combination with the characteristics of geological information data. The system consists of data management, data mining and knowledge discovery, knowledge representation. It can syncretize multi-source geosciences data effectively, such as geology,geochemistry, geophysics, RS. The system digitized geological information data as data layer files which consist of the two numerical values, to store these files in the system database. According to the combination of the characters of geological information, metallogenic prognosis was realized, as an example from some area in Heilongjiang Province. The prospect area of hydrothermal copper deposit was determined.     

城市地籍测量中GPS技术的应用研究

GPS新技术的出现,可以高精度地测定地物点的坐标。特别是应用RTK新技术,依据一定数量的基准控制点,便可以高精度并快速地测定界址点及地物点的坐标。本文尝试利用GPS技术在城市地籍测量方面的应用做一些探讨。     

多普勒雷达风廓线的反演及变分同化试验

为了将雷达风场资料更好地应用到数值预报模式中, 使用VAD方法反演多普勒雷达风廓线并处理成标准的探空资料进行变分同化试验。结果表明: VAD方法反演的风廓线与探空实况对应较好, 验证了用VAD技术反演风廓线的可行性。用GRAPES-Meso模式的三维变分同化系统对雷达风廓线资料进行同化后, 风场的初始场明显改善, 降水强度和落区预报也有不同程度的改善。其中, 对6 h降水预报的改善明显优于对24 h的预报改善。另外, 在短时强降水预报中, 雷达风场资料的同化频率和同化窗口的不同, 对降水预报的改善情况也有所差异。在个例研究中, 同化间隔为1 h的方案6 h降水预报要优于同化间隔为3 h和6 h的方案, 同化窗口为3 h的试验方案6 h降水预报要好于同化窗口为6 h的试验方案。     

中国西部大城市开发区企业投资决策的驱动因素——以成都、西安高新区为例

基于成都、西安高新区企业调研数据,在构建企业投资决策驱动指标体系的基础上,采用因子分析法考察企业投资决策的驱动因素,并运用单因素方差分析和相关性检验进一步探究企业异质性与投资决策驱动因素的关系。结果表明:(1)信息通信水平、获取高素质人才、人际关系网络等构成企业投资决策的关键驱动指标,而跨国公司集聚、获取自然资源、决策者偏好等指标的解释力度最小。(2)企业投资决策由6个维度因子构成,其重要程度由高至低依次为政策、产业集群与人力资源、城市环境、城市区位、企业集聚以及关系因子。(3)入园越早、规模越大、总部型及出口型企业均更加依赖政策驱动;私企与外企、一般服务业企业与高级服务业企业、部分迁移企业与非迁移企业、办公区企业与科技园企业、办公区企业与厂区企业分别形成了基本对立的投资驱动偏好。     

Variegated transnational partnerships: Multi-scalar actor networks in China’s overseas industrial parks

The development of overseas industrial parks is a key component of the Belt and Road Initiative and a practical way of promoting inclusive globalization by introducing new forms of cooperation between China and the host countries.In this paper,the Thai-Chinese Rayong Industrial Zone(TCRIZ),and the China-Indonesia Economic and Trade Cooperation Zone(KITIC)are discussed in the context of the evolving development strategies and tra-jectories through three interrelated conceptual lenses-policy mobility,actor networks,and partnerships.The actor-network theory provides a lens to analyze how policy mobility and partnerships develop for two industrial zone case studies.The development,which involves a multi-scalar process,is shaped by the interactions among the national states,the regional governments and corporations against a background of globalization.Three types of trans-national actor partnership networks have been identified,namely,hierarchical partnership,spontaneous partnership,and hybrid partnership.A highlight of the study is the role that the partnerships play in the process of policy mobility when it comes to the overseas industrial zones.It is argued that the partnerships are the key to achieving technology transfer on a cross-national basis,and the effectiveness of the technology transfer is dependent on partner selection and the roles of the actors in policy mobility.     

Geothermal and other effects on amino acid racemization in selected Deep-Sea Drilling Project cores

Kinetic parameters for the epimerization of isoleucine in multispecific foraminiferal asemblages were used to establish the effects of burial depth and the geothermal gradient on the extent of reaction. It was observed that with a little as thirty meters of burial in a normal thermal regime there were differences between the extent of epimerization measured and that which would have been predicted for thermal equilibrium with bottom water temperatures. As would be expected, these differences are greatest when the heat flow (the geothermal gradient) and/or the sedimentation rates are highest. These effects were observed in most of the DSDP samples studied, and have been used to estimate the average heat flux since the time of sample deposition. Occasional anomalous effects were observed which could not be related to past or present heat flux. These were determined to be due to such geologic occurrences as slumping and reworking or to recent sample contamination. Other problems emerged related to bottom water temperatures including changes over geologic time which are unknown and could not be deduced. Thus, the presence of epimerization anomalies in DSDP cores as noted above limits the effectiveness of amino acid geochronology in such cores, unless these anomalies can be recognized as ab initio.     

哈长城市群城镇用地扩展进程及其驱动因素研究

以Landsat TM/ETM+/OLI遥感影像为主要数据源,提取哈长城市群1990、2000、2010、2015 年4 个年份的建设用地信息,采用年均扩展指数、景观扩展指数、多距离空间聚类函数、空间分维度等对城镇用地扩展进程进行分析。结果表明,1990~2015年间,哈长城市群城镇用地增加57 321.47 hm²,增长率为21.05%,整体扩展强度呈上升趋势;空间扩展表现出以中心城市为核心的扩展模式,边缘式增长在各个时期均为主导增长方式;空间扩展聚集性总体表现出“先增强、后减弱”趋势,整体空间结构相对稳定。国家宏观政策、非农业GDP增量和第三产业GDP增量是影响哈长城市群城镇用地扩展的重要因素。GDP增量、非农业人口增量、第二产业GDP增量对城镇用地的扩展起阶段性作用;人均GDP增量与城市用地扩展相关性不显著。     

Molecular diversity of phytoplankton in the East China Sea around Jeju Island (Korea), unraveled by pyrosequencing

The East China Sea (ECS) around Jeju Island lies in a transitional region between the temperate and subtropical zones and is influenced by the Kuroshio Current. Hence, this area has been considered an important monitoring site for oceanic ecosystem changes. Herein, we assessed the community structure and diversity of the phytoplankton in the ECS around Jeju Island using small subunit ribosomal RNA pyrosequencing. We analyzed eight samples collected from the surface and at 30 m- and/or 50-m depths from two neritic and oceanic stations each from 24–30 April 2011. Comparisons of 15,498 pyrosequences identified 172 phylotypes of phytoplankton, excluding cyanobacteria, from the four surface stations. These pyrosequences were represented by dinoflagellates (29 %), stramenopiles (31 %), and chlorophytes (>39 %), with minor contributions from cryptophytes, haptophytes, and Telonemia. Phylotypes retrieved at 30- and 50-m depths were very similar to the surface samples. However, phylotype diversity and community structure varied considerably with the stations. Dominant phylotypes included Karlodinium veneficum, Ostreococcus tauri, Skeletonema marinoi, and Thalassiosira curviseriata, and many of the detected phylotypes include new records for the present study area. This study provides a valuable phylotype reference for future phytoplankton community structure and diversity studies with regard to marine environmental changes.     

知识密集型服务业空间关联特征及其动力机制分析——基于广东省21个地级市的实证

以转型中的经济大省广东为例,运用探索性空间数据分析法和空间常系数模型,分析广东省知识密集型服务业(KIBS)发展水平的地区差异、空间关联特征及其动力机制,研究结论表明:1广东省各地级市KIBS产出总体上以珠三角城市最高,但各行业存在空间差异;2广东省地级市KIBS呈空间正相关特点,但空间结构极不平衡,呈"总体分散、局部集中"分布格局,珠三角内诸城市属于KIBS热点区域,是高值集聚区,粤东西北的大部分城市是位于冷点区域,4 a间没有突破低值集聚的现状,也揭示了珠三角地区内相邻城市的KIBS具有竞争性,尚未形成有效的扩散-协同的发展格局;3广东省KIBS空间格局的动力因子分析表明:城市化、工业化、信息化、经济外向度和交通通达性均对KIBS发展有促进作用,而市场需求对KIBS发展产生负向影响。