In order to understand the remaining oil distribution , and provide evidence for numerical simulation of polymer flooding and comprehensive adjustment , a study on the numerical simulation on the water flooding of pu 1 - 2in western south central block is performed 模拟结果表明，剩余油饱和度分布不均匀，西部过渡带和注采系统不完善的断层附近含油饱和度比较高，葡1油层动用状况较差；南中块西部葡2 (下标2 )和葡2 (下标3 )沉积单元发育较好，动用程度较大，最终采收率可达39 . 6 % ~ 43 . 5 % ，而葡1单元则相对较差，最终采收率只达到28 . 1 % 。
During the yanshanian phrase , the area is in the condition of contractional background , with multi - staged tectonic reversion . 5 . through studying the origin of volcanic rocks and the characteristics of magma evolution , it concludes that there exist 3 originated areas of magma - from mantle , crust , and mantle - crust exchange . the basic magma of nandaling volcanic rocks of early jurassic is derived from upper mantle ; the magma of tiaojishan volcanic rocks of mid jurassic is formed in the contractional tectonic setting , and derived from the transition zone of crust and mantle interaction ; the acid magma of l 5 、通过岩石化学、微量元素、稀土元素的研究，探讨了不同级别节律的火山岩成因、岩浆演化等特征，认为本区燕山期火山岩有三个岩浆源区，即地幔源、地壳源和壳幔混源，早侏罗世的南大岭旋回的基性岩浆，起源于上地幔；中侏罗世髫髻山旋回火山岩是在相对挤压环境中，岩浆起源于壳幔过渡带；晚侏罗世无负eu异常的酸性岩浆来源于下地壳的古老结晶基底的局部熔融，有负eu异常的酸性岩浆来源于上地壳的局部熔融；早白垩世火山岩基性岩浆起源于上地幔，中性岩浆起源于下地壳底部的壳幔过渡带。
Establishing 3 - d terrain models with vector contour lines and elevation terrain models with the help of the determination of space corresponding relations between contour lines , tile operation and branch operation . explanation of real - time reflection of terrain models , including three algorithms in lod technology , compared with quadtree algorithm , roam algorithm and the algorithm based on the intermediate belt , to show the advantages and disadvantages of the different situations of the terrains , so as to find out the right algorithm , the quadtree algorithm . developing and implementing the fast demonstration on the vc platform with three - dimentional visualization techniques , such as vrml and opengl , providing a persuasive argument for the research 论文首先概括介绍了用等高线快速建立3d地面模型和显示的相关技术,并论述了课题研究的背景和选题依据;其次,论文阐述了如何对等高线数据进行预处理,提出了有效的得到矢量化等高线的方法;再次用矢量化的等高线数据建立三维地面模型,通过等高线间的对应关系的确定、瓦片操作、分支操作建立地面的高程模型;然后论文对地面模型的实时渲染问题进行了深入阐述,主要是从lod技术的三种算法着手进行研究,通过对比四叉树算法、 roam算法和基于过渡带算法对不同种情况的地面数据显示的优缺点,再结合本系统的地形数据的特点选择了适合的算法:四叉树算法;最后,用vrml和基于opengl的三维可视化技术在vc平台上开发并实现了地形的三维快速显示系统,为论文的研究内容提供了有力的论证。
The paper divided turbidite fan in deep water from long source into braided channel microfacies , inter - braided channel microfacies , medium fan over - belt microfacies , and external fan subfacies , and divided slump turbidite which related with delta into medium fan subfacies and external fan subfacies , and summed up 15 kinds of marking of subfacies and microfacies classification . at the same time , it formed a series of effective technology of analyzing turbidite source at the base of studying region geological which combined with analyzing the content change of terrigenous debris , with the found of logging facies , and with the ancient terrestrial magnetism test and other technology means under the guidance of three - dimensional model of turbidite which has been founded already and the flat surface feature of microfacies 将远源深水浊积扇划分为辫状水道微相、辫状水道间微相、中扇过渡带微相和外扇亚相；将与三角洲有关的滑塌浊积扇划分为中扇和外扇两个亚相，并总结了浊积岩沉积划分各种亚相、微相类型的十四种标志，分别为:岩石类型、层理类型、砂岩单层厚度、粒度结构特征(粒度中值、分选性、概率曲线) 、生物化石、储层物性(孔隙度、渗透率) 、泥岩隔层特征(泥岩单层厚度、层数、颜色) 、鲍玛层序组合和自然电位曲线特征。
The results showed that the mean proportion of polymorphic loci ( ppb ) of anabasis aphylla , which comprised 3 subpopulations ( 58 individuals sampled ) , generated by 16 primers was 94 . 56 % , the value of ppb of ceratocarpus arenarius , which had 4 subpopulations ( 80 individuals sampled ) , using 16 primers was 98 . 00 % . the paper had proved that the higher genetic diversity and the genetic differentiation existed in the populations of boih anabasis aphylla and ceratocarpus arenarius , while the latter had much more genetic diversity than the former . moreover , the study discussed the shannon information index and nei ' s gene diversity index of the two species natural populations , which indicated that there were more genetic variations within the subpopu 另外，通过rapd资料的聚类分析及相关性分析研究，发现无叶假木贼和角果藜自然种群的遗传结构与绿洲沙漠过渡带的微生境生态因子(主要是土壤因子)相关，其中无叶假木贼亚种群遗传多样性水平不仅与土壤含水量( w ) 、钾钠离子浓度( k + na )和氯离子浓度( cl )呈显著的正相关( p 0 . 05 ) ，还与土壤中有机质( som ) 、全氮( nt )和全磷( pt )含量呈显著的负相关；同时，角果藜种群的遗传多样性水平与土壤中有机质( som )和全氮( nt )含量呈显著的正相关，而与co _ 3 ~ ( 2 - )浓度呈显著的负相关；除此之外，其它土壤生态因子与两物种遗传多样性水平的相关性均不显著(卜0 . 05 ) 。
It ' s significant to further the study of the environment evolvement and forming mechanism , and this helps to open out its ecological essential , protect and develop the oasis , lacated in the cross belt which converge northeaster and northwester , yutian oasis was threatened by the ilowing sand , and has the bad nature conditions the main purpose of the paper is applying fractal theory to research on the change of transitional belt between oasis and desert , which is a typical ecosystem in arid zone 而荒漠与绿洲之间的植被带即过渡带则最为敏感、完整地记录了这两大生态系统之间的相互作用与相互转化，深入研究这一特殊地带的环境演变过程、特征及形成机制对于揭示其生态学实质、维护和发展绿洲具有重要的实践意义。于田绿洲位于东北风与西北风的交汇地带，受到流沙侵蚀的危害很严重，自然条件非常恶劣，生态环境异常脆弱，人民的生存环境受到了很大的威胁。
The results show that the relation between the bryoflora of houhe national nature reserve and that of mt . jinfu , shennongjia national nature reserve , jiugongshan national nature reserve is the most closest for their genera similarity coefficients are more than 50 % , which can be explained by the parallel geographical locations and the similar climatic characteristics of the compared areas 这可以从它们所处的地理位置和自然条件加以解释。九宫山保护区与后河保护区处于同一纬度上，同属于亚热带ftewe ’ w硕士学位论文wwgrmaster ’ stlffi徘季风气候，都是北亚热带落叶阔叶林和中亚热带常绿阔叶林的过渡带，气候条件较为相似。
