创建让群众满意的基层所

10月24日上午,修武县国土资源局周庄所代表全市国土资源系统接受全省“群众满意基层站所”评议工作经验交流会领导及与会70余人的检验,并得到了高度评价。     

地球同步卫星定位系统多值解研究

本文叙述了地球同步卫星定位系统中多值解的含义,详细地讨论了多值解产生的原因和条件,给出了寻找多值解的方法,对改善多值解计算提出了初步设想。     

迎接知识经济——山西气象事业发展的机遇

２１世纪是知识经济占主导地位的世纪,气象作为信息行业,知识资本雄厚,人才资源密集。气象知识产业的发展对于欠发达地区的山西气象事业则更多提机遇与挑战。优势方面包括：气象行业属高科技的信息产业,贴近知识经济;气象资源可持续开发利用;部门人人才较为集中,知识更新快;部门的无形资产将逐渐发挥出来。挑战与困难有：观念不适应;人才与知识结构不适应;发展初期的困难不容忽视。     

建设生态古城 打造低碳水乡

台儿庄区位于山东省最南部,地处鲁苏交界,是震惊中外的台儿庄大战发生地。全区总面积538．5平方公里．辖5镇和1个街道,共211个行政村（居）、30．1万人、耕地面积40万亩,2001年被列为全国首批中小生态城市试验区。我们枣庄是全国知名的煤城,开采煤炭已经有1500多年的历史。     

东海富营养化封闭海水养殖海域浮游植物分布与控制因子

The distribution of phytoplankton and its correlation with environmental factors were studied monthly during August 2012 to July 2013 in the Yantian Bay. A total of 147 taxa of phytoplankton were identified, and the average abundance was in the range of 0.57×10~4 to 7.73×10~4 cell/L. A total of 19 species dominated the phytoplankton assemblages, and several species that are widely reported to be responsible for microalgae blooms were the absolutely dominant species, such as Skeletonema costatum, Navicula sp., Thalassionema nitzschioides,Pleurosigma sp., and Licmophora abbreviata. The monthly variabilities in phytoplankton abundance could be explained by water temperature, dissolved oxygen, salinity, dissolved inorganic nitrogen(DIN), and suspended solids. The results of a redundancy analysis showed that p H and nutrients, including DIN and silicate(SiO_4), were the most important environmental factors controlling phytoplankton assemblages in specific months. It was found that nutrients and pH levels that were mainly influenced by mariculture played a vital role in influencing the variation of phytoplankton assemblages in the Yantian Bay. Thus, a reduction of mariculture activities would be an effective way to control microalgae blooms in an enclosed and intensively eutrophic bay.     

黄海苏北浅滩海域春夏季浮游植物时空分布及其控制生态因子

The Subei Shoal is a special coastal area with complex physical oceanographic properties in the Yellow Sea. In the present study, the distribution of phytoplankton and its correlation with environmental factors were studied during spring and summer of 2012 in the Subei Shoal of the Yellow Sea. Phytoplankton species composition and abundance data were accomplished by Uterm?hl method. Diatoms represented the greatest cellular abundance during the study period. In spring, the phytoplankton cell abundance ranged from 1.59×10~3 to 269.78×10~3 cell/L with an average of 41.80×10~3 cell/L, and Skeletonema sp. and Paralia sulcata was the most dominant species. In summer, the average phytoplankton cell abundance was 72.59×10~3 cell/L with the range of 1.78×10~3 to 574.96×10~3 cell/L, and the main dominant species was Pseudo-nitzschia pungens, Skeletonema sp., Dactyliosolen fragilissima and Chaetoceros curvisetus. The results of a redundancy analysis(RDA) showed that turbidity,temperature, salinity, pH, dissolved oxygen(DO), the ratio of dissolved inorganic nitrogen to silicate and SiO_4-Si(DIN/SiO_4-Si) were the most important environmental factors controlling phytoplankton assemblages in spring or summer in the Subei Shoal of the Yellow Sea.     

“8·3”鲁甸地震背景下甘沟流域泥石流危险性评价

2014年8月云南省鲁甸县发生6.5级地震,位于震源中心地带的甘沟流域受地震影响,诱发大量次生地质灾害,流域内松散堆积物质增加,泥石流灾害的潜在危险增大,对沟口集镇造成威胁。本文基于对甘沟流域野外实地调查,综合考虑降雨对震后泥石流的影响,选取泥石流规模、流域面积、日最大降雨量、主沟长度、相对高差、流域切割密度、不稳定沟床比等7个评价因子,通过调整分辨系数为0.227 2的灰色关联法确定其客观权重,并在此基础上采用多因素综合评价方法计算泥石流危险度,对其进行危险性定量评价。结果表明,震后甘沟流域泥石流危险性属中度危险,诱发中等规模泥石流的可能性较大。     

邯邢式铁矿形成机制:来自河北武安斑状二长岩中“含铁熔体-流体”的证据

人们对邯邢式铁矿形成机制一直存在争议。为解决这一科学问题,本文对在河北武安赵庄地区斑状二长岩中发现的“含铁熔体-流体”脉及团斑进行了详细的矿物学及岩石学研究。结果显示:“含铁熔体-流体”矿物组合分带明显,其中核部矿物组合为Di+Amp+Mt+Ap+Pl,边部矿物组合为Prh+Cal。“含铁熔体-流体”中磁铁矿具有明显的环带结构,中心部分TiO₂含量为2.23%,边部磁铁矿TiO₂含量为0.36%0.57%。核部∑REE高过边部两个数量级,在球粒陨石标准化稀土元素分配图中呈右倾型曲线,与武安地区侵入岩同源,在未经流体加入时的高温岩浆环境中结晶。边部磁铁矿在球粒陨石标准化稀土元素分配图中显示REE轻微亏损,且有明显的Ce负异常,指示了磁铁矿结晶环境有大量富含挥发分的流体加入。在磁铁矿(Ti+V)-(Al+Mn)图解中,“含铁熔体-流体”中的磁铁矿落于斑岩型磁铁矿和Fe-Ti、V型磁铁矿区域,也处于热液型磁铁矿与岩浆型磁铁矿之间。这表明“含铁熔体-流体”并非侵入岩与围岩发生接触交代反应后形成的远端夕卡岩脉,而是源于深部的“含铁熔体-流体”在浅部结晶的产物。以高钛、富集REE为特征的磁铁矿是深部岩浆房铁矿浆结晶的磁铁矿微晶。由于富含挥发分的流体注入岩浆房形成流体超压,磁铁矿微晶与气泡结合沿岩浆通道快速上升。最后在1.552.19 km的深度形成以低Ti、亏损REE为特征的磁铁矿,并结晶形成角闪石等流体晶矿物。     

陕西柞—山地区冷（水沟）—池（沟）—色（河铺）金钼铜矿带特征及其区域找矿意义

陕西柞—山地区冷(水沟)—池(沟)—色(河铺)金钼铜矿带地处陕西柞—山地区南部,位于小茅岭—陡岭元古宙岛链状隆起带中段,中、南秦岭接合部。该带东西长35.7 km,南北宽7.6 km,已在其中发现多处与燕山期中酸性岩浆活动有关的金钼铜矿床。对带内的冷水沟金铜矿床、池沟金钼铜矿床、色河铺铜矿等主要矿床的地质、矿体、蚀变、矿化规律进行了总结,发现矿化受主斑岩体控制,总体上,往往从斑岩体向围岩,出现内钼、外铜、远金的多金属矿化空间分带性,构成了斑岩型-矽卡岩型-隐爆角砾岩型-构造蚀变岩型金钼铜成矿系列。冷-池-色金钼铜矿带的发现,为中、南秦岭寻找斑岩型钼铜矿床提供了直接证据,拓宽了柞(水)—山(阳)地区的找矿思路和找矿空间。