利用静止卫星云图进行二维傅里叶相位导风试验

根据二维傅里叶相位分析原理,对1 min间隔的IR云图进行由云推导风的反演。利用模块高度频数直方图把云分为高、中、低云。对连续三幅IR云图进行二维傅里叶相位导风计算,得到两个反演风场,对两个风场相同位置上的风矢进行逐点比较,剔除风向或风速差别较大的风矢,再对处理后的风场进行高度调整法的质量控制,把不合理的风矢剔除或调整到合理的高度层,得到连续性较好的风场。     

Variability of soil moisture and its relationship with surface albedo and soil thermal parameters over the Loess Plateau

Data from July 2006 to June 2008 observed at SACOL(Semi-Arid Climate and Environment Observatory of Lanzhou University,35.946°N,104.137°E,elev.1961 m),a semi-arid site in Northwest China,are used to study seasonal variability of soil moisture,along with surface albedo and other soil thermal parameters, such as heat capacity,thermal conductivity and thermal diffusivity,and their relationships to soil moisture content.The results indicate that surface albedo decreases with increases in soil moisture content,s...     

植物生长调节剂在龙眼短枝扦插中的应用

用３种生长素对龙眼插条进行处理,结果表明：龙眼插条不定根由愈伤组织分化而成,ＩＢＡ 能促进插条的愈伤组织发生,２．４－Ｄ 对插条叶片的保持效果最好,龙眼扦插的难点在于生根过程的后期阶段     

基于GIS技术的矿产资源信息系统

地质资料基本上可以分为空间数据和属性数据两大类.它们是地学数据不可分割的两方面,客观上要求统一进行管理.采用地理信息系统技术,可以彻底解决两种类型数据统一管理问题.结合正在开展的辽宁省矿产资源勘查、开发与利用规划工作,论述了建立基于GIS技术的辽宁矿产资源信息系统实现数据可视化和空间模型分析的思路和实现方法.它为今后矿产资源管理工作实现全面科学化管理提供了现代化手段,也为制定行业发展规划以及进行生产决策提供了支持,进而促进地质找矿和矿产开发的工作部署朝思维可视化及思路多样化的方向发展.     

1988年澜沧、耿马大震的预报和再认识

本文介绍了作者在1988年11月6日澜沧、耿马大震前进行中、短临阶段预报及大震现场预报的主要思路、方法和依据。中期预报的主要依据是:地震活动特征、大震的47年重现周期和应变能的积累;短临预报的主要依据是:滇西南地震活动中心的动态演变、M_L≥5.0级地震震中定向迁移及地震活动过程。大震后现场跟踪预报和最大强余震震级判别主要用了∑√E—lgt和b值截距法。最后本文对预报情况进行了总结和重新认识。     

新疆西天山果子沟地区开亚他斯火山机构及成矿潜力浅析

新疆西天山地区的早石炭世古火山机构是形成金矿床的重要构造。本文通过对新疆西天山果子沟地区开亚他斯古火山机构的形成时代、岩石类型、火山岩相、喷发旋回、喷发韵律、成矿条件的调查研究, 初步确定开亚他斯古火山机构形成于331Ma±2Ma(早石炭世), 为一套钙碱性系列岩石组合, 具有爆发相—喷溢相—爆发相的火山活动特征, 火山岩中金、锑、铋、锌、钼元素背景值较高, 有形成阿希火山岩型金床的成矿背景和潜力。      

新疆东部马庄山金矿成矿作用同位素年代学研究

马庄山金矿位于新(疆)甘(肃)边境。地质、地球化学研究表明,马庄山金矿床受马庄山古火山机构控制,与矿区内同期火山-次火山作用有直接的成因联系,成因类型为浅成中-低温热液型。次火山岩及含金石英脉年代学研究表明,马庄山火山机构形成时代与金矿成矿时代均为中-晚石炭世:次流纹斑岩和次英安斑岩全岩及含金石英细(网)脉石英流体包裹体Rb-Sr等时线年龄分别为301±21Ma、303Ma±26Ma和298Ma±28Ma(95%置信度)。     

Seasonal variation of carbon exchange of typical forest ecosystems along the eastern forest transect in China

The long-term and continuous carbon fluxes of Changbaishan temperate mixed forest (CBS), Qianyanzhou subtropical evergreen coniferous forest (QYZ), Dinghushan subtropical evergreen mixed forest (DHS) and Xishuangbana tropical rainforest (XSBN) have been measured with eddy covariance techniques. In 2003, different responses of carbon exchange to the environment appeared across the four ecosystems. At CBS, the carbon exchange was mainly determined by radiation and temperature. 0°C and 10°C were two important temperature thresholds; the former determined the length of the growing season and the latter affected the magnitude of carbon exchange. The maximum net ecosystem exchange (N _EE) of CBS occurred in early summer because maximum ecosystem photosynthesis (G _PP) occurred earlier than maximum ecosystem respiration (R _e). During summer, QYZ experienced severe drought and N _EE decreased significantly mainly as a result of the depression of G _PP. At DHS and XSBN, N _EE was higher in the drought season than the wet season, especially the conversion between carbon sink and source occurring during the transition season at XSBN. During the wet season, increased fog and humid weather resulted from the plentiful rainfall, the ecosystem G _PP was dispressed. The Q ₁₀ and annual respiration of XSBN were the highest among the four ecosystems, while the average daily respiration of CBS during the growing season was the highest. Annual N _EE of CBS, QYZ, DHS and XSBN were 181.5, 360.9, 536.2 and ?320.0 g·C·m^?2·a^?1, respectively. From CBS to DHS, the temperature and precipitation increased with the decrease in latitude. The ratio of N _EE/R _e increased with latitude, while R _e/G _PP, ecosystem light use efficiency (L _UE), precipitation use efficiency and average daily G _PP decreased gradually. However, XSBN usually escaped such latitude trend probably because of the influence of the south-west monsoon climate which does not affect the other ecosystems. Long-term measurement and more research were necessary to understand the adaptation of forest ecosystems to climate change and to evaluate the ecosystem carbon balance due to the complexity of structure and function of forest ecosystems.     

欧北-大湾地区火山岩储层成因机制的研究

从分布、成分组成、形成机制等几个方面探讨了辽河油田东部凹陷中段最主要的火山岩储层－－粗面岩的成因机制，并对其成为该区良好储层的原因进行了探讨，通过对比说明了另一类火山岩－－玄武岩不含油的原因，并建立了成因模式，最后得出结论：粗面岩呈喷发状态产出，由于其硅质含量高，流动性小，容易在构造高部位形成巨厚的火山岩锥或火山岩钏，从而造成其大部分在水上，结晶较好且储层物性极佳，同时因其裂缝发育，这些因素结合起来使其成为良好的会层。从供油方式来看，其成藏方式属于侧生式，而从生储盖组合方式来看，其属于自生、自储、自盖式成藏组合。同时给出了其成藏模式。