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STUDY ON THE GEOMORHOLOGIC ZONATION BY FRACTAL PARAMETERS——A CASE STUDY OF ORDOS BLOCK AND ITS SURROUNDING AREAS
利用分形参数进行地貌定量分区研究——以鄂尔多斯块体及周边为例

Bi Lisi,He Honglin,Wei Zhanyu,Shi Feng,<br>,何宏林,魏占玉,石峰
第四纪研究 , 2011,
Abstract: Geomorphologic zonation is one of the fundamental works in Geoscience,but it was mostly qualitative in the past.Several studies on the quantitative geomorphologic zonation have been done based on the terrain factors such as slope,aspect and relief in recent years,however,many problems are still unresolved.As the digital terrain technology and the fractal theory become more mature,it is possible to classify quantitatively landforms by such fractal parameters as the surface fractal dimension(D)and the ordinate-intercept(γ).In this paper Ordos Block and its surrounding areas were chosen,and,based on the 90-m-resolution SRTM data,the variogram method and the cellular fractal model were adopted to calculate their fractal parameters in such three sizes of the moving windows as 65×65,129×129 and 257×257.The results in these moving windows indicate together that the scale-invariance of the landforms of Ordos Block and its surrounding areas hold over at least from 2.97km to 11.61km,and the distributions of the fractal parameters are region-dependent apparently.The quantitative geomorphologic zonation by the fractal dimension and the ordinate-intercept comprehensively is achieved with the K-Means unsupervised classification.The resultant regions are consistent with the geomorphologic types and each zone has the characteristic fractal values.Hetao Basin and Yinchuan Basin are characterized by high surface fractal dimensions and low ordinate-intercepts(D=2.8~3.0,γ=0~1)in contrast to the mountainous areas including Luliang Mountain,Helan Mountains and Wulaer Mountains where low surface fractal dimensions and high ordinate-intercepts(D=2.4~2.6,γ=2.5~3.5)are found.The other regions are defined by the following fractal parameters respectively: North Shaanxi Loess Plateau in the southern part of Ordos Block,D=2.5~2.7 and γ=2.5~3.5; Kubuqi Desert and Mu Us Desert in the northern part of Ordos Block,D=2.2~2.4 and γ=0~1;Shanxi Basin Belt and Weihe Basin,D=2.2~2.4 and no predominant ordinate-intercept values.The comprehensive zonation result shows that the fractal feature is related with the geological structures and the geomorphologic types closely in each zone,it is therefore feasible to classify landforms quantitatively by fractal parameters.
Dynamic characteristics on tempo-spatial of forest landscape in Fujian Province
福建省森林景观时空动态特征研究

YAN Shu-Jun,HONG Wei,WU Cheng-Zhen,BI Xiao-Li,<br>闫淑君,洪 伟,吴承祯,,
中国生态农业学报 , 2005,
Abstract: The indices of diversity,dominance and evenness of forest landscape in Fujian Province were analyzed.The results show that from 1987 to 1997,the indices of diversity and evenness of forest landscape increase from 1.727 and 0.786 to 1.884 and 0.857 respectively,while the index of dominance of forest landscape decreases from 0.470 to 0.313.There is a increasing tendency of the indices of diversity and evenness of forest landscape from the southeast to the northwest of Fujian Province,but the index of dominance of forest landscape gradually decreases from the southeast to the northwest.
利用分形参数进行地貌定量分区研究——以鄂尔多斯块体及周边为例
,何宏林,魏占玉,石峰
第四纪研究 , 2011, DOI: 10.3969/j.issn.1001-7410.2011.01.18
Abstract: 地貌分区是地学研究的基础内容之一。传统的地貌分区大多是定性的划分,随着数字地形技术以及分形分析方法的成熟,利用分形参数进行定量化的地貌分区成为可能。本文利用水平分辨率为90m的SRTM数据,采用元分维模型,通过变差函数法计算了鄂尔多斯块体及周边地形的分形参数。在65×65,129×129以及257×257等3种尺度滑动窗口中得到的分形参数的特征表明了研究区地形分形特征的尺度不变性至少在2.97km到11.61km范围内是存在的,而且分形参数分布具有明显的区域差异。结合地表分维值和截距值用K-Means非监督分类法进行综合地貌定量分区,所得结果与地貌类型有很好的吻合关系,每一地貌分区都具有特征的分形值组合。河套盆地和银川盆地是地表分维值高值区和截距值低值区,分维值主要为2.8~3.0,截距值主要为0~1;鄂尔多斯块体南部陕北黄土高原区地表分维值主要为2.5~2.7,截距值主要为2.5~3.5;吕梁山、贺兰山、乌拉山等山区也是截距值高值区,主要为2.5~3.5,但地表分维值较低,主要为2.4~2.6。鄂尔多斯块体北部库布齐、毛乌素等沙漠区与渭河、山西盆地带都是地表分维值低值区,地表分维值大部分低于2.5,但两区域的截距值差异明显。沙漠区地形起伏较缓,截距值主要为0~1.5,而渭河盆地和山西盆地带的截距值没有明显的优势范围。分形值组合所显示的分形特征与地质构造、地貌类型等具有明显的相关性。因此,利用分形参数进行地貌分区是一种可行的定量方法。
Exploration of Visual Technology of Digital Human Body
数字人体可视化技术的探讨

Wu Fei,Bi Siwen,<br>吴斐,
世界科学技术-中医药现代化 , 2005,
Abstract: 本文阐述数字人体-人体系统数字学研究的目的和意义,并重点探讨了数字人体的可视化技术,主要内容包括人体系统数字建模、数字人体系统的各个子系统信息可视化、数字人体经络信息可视化、数字人体脏腑信息可视化、数字人体动态信息可视化、数字人体的整体信息可视化。文章最后提出了数字人体可视化技术的难点和前景展望。
FERROMAGNETIC RESONANCE OF CYLINDRICAL DOMAIN LATTICE
柱形畴阵的铁磁共振

BI SI-YUN,<br>
物理学报 , 1988,
Abstract: The recent experimental work on the ferromagnetic resonance of cylindrcal domain lattice at action of arbitrary magnetic field is reported. The device used in the experiments is a microwave microstrip transmission line placed between the poles of a electromagnet. Based on the experimental results, the present theories on the bubble mode resonance is analysed and some significant results are achieved.
Research on the Geological Model for 3D System of Mining Area in Shandong Yanzhou
山东兖州矿区三维系统地质模型研究

Bi Siwen,<br>,刘天泉
系统工程理论与实践 , 1998,
Abstract: In this paper,the research report about the conditions of geology and hydrogeology in the mining area has been finished after collecting and analyzing all data belong to various stages from exploration to drilling well,the plan, theory and methodology about quantitative evaluation on the conditions of geology and hydrogeology in mining area has been put forward, four kinds of geological model have been built based on difference of the beds conditions of geology and hydrogeology in mining area, and associated geological graphs have been drawn by means of software wrote in C .
BASIC GEOLOGICAL CHARACTERISTICS OF SKARN-TYPE SCHEELITE DEPOSIT IN CHINA
中国矽卡岩型白钨矿矿床成矿基本地质特征

BI Cheng-en,<br>
地球学报 , 1987,
Abstract: Skarn-type scheelite deposit is most widespread and of the greatest economic value, occupying an important place among all tungstun deposits in the world. China's tungstun deposits rank first in the world. Skarn-type scheelite accounts for 60.62% of the total tungstun reserves in China, which remains to be exploited and utilzed.Skarn-type scheelite deposits are distributed widely in China, and have been found in more than half of its 29 provinces. They are mainly concentrated in South China and some in Northeast, Northwest and other parts of China, constituting the major part of scheelite zone of the Circum-Pacific metallogenic belt. The ore-controlling horizons are largely developed in the Devonian and Cretaceous. The mineral was formed in a wide range of geological time, but mainly during the Yanshanian period. Spatially, skarn-type scheelite deposits can be classified as one metallogenic province and six metallogenic zones in China. This paper discusses the relationship between the distribution of the deposits and geotectonics, and the source of mineralforming materials and compare the deposits in China with those famous in the other parts of the world. Compositionally, the tungstun deposits of China have a slightly higher acidity. The tungstun deposits associated with I-type granite are predominantly medium-and small-scaled, while the large-and medium-scaled ones are mostly associated with the S-type granite. Comparatively speaking, some famous skarn-type scheelite deposits in the world were formed at a somewhat deep depth and higher temperature, with better developed subsequent hydrothermal alteration and higher ore grade. According to the origin of hydrothermal solution and ore-bearing formations, the skarn-type scheelite deposits are classified and the scheelite deposits associated with ma-gmatic hydrothermal solutions and those associated with migmatized hydro-thermal solution are schematically compared in the paper.
福建省森林景观时空动态特征研究
闫淑君,洪 伟,吴承祯,,
中国生态农业学报 , 2005,
Abstract: 研究分析福建省森林景观类型的多样性、优势度和均匀度指数结果表明,1987~1997年全省森林景观多样性指数和均匀度指数分别由1.727、0.786增至1.884和0.857,而优势度指数由0.470减至0.313。森林景观多样性指数和均匀度指数由东南向西北呈递增趋势,而景观优势度指数则由东南向西北呈递减趋势。
渤海海域历史上发生过地震诱发海啸吗?
石峰,,谭锡斌,魏占玉,何宏林
地球物理学报 , 2012, DOI: 10.6038/j.issn.0001-5733.2012.09.027
Abstract: 历史文献中有许多关于渤海"海溢"的记录,但"海溢"是否就是现代意义上的海啸还存在疑问,而且渤海海域基本不存在发生重大海啸的海沟型地震构造背景,因此,渤海地区是否发生过海啸的争论从未停止.本文在分析历史地震和古籍资料的基础上,通过数值模拟分析历史地震引发海啸的可能性,结合对渤海沿岸海啸堆积物的地质调查,认为渤海海域历史上基本没有发生过破坏性海啸事件,即使存在过海啸,到岸浪高也不会高于0.5m,而且仅限于东营—潍坊一带.
Application of arbuscular mycorrhizas in ecological restoration of areas affected by coal mining in China
丛枝菌根在煤矿区生态重建中的应用

BI Yin-Li,<br>
生态学报 , 2005,
Abstract: Coal mining has aided economic development but has also caused serious environmental problems. This paper reviews the major soil barriers to successful ecological restoration such as low soil fertility, low or high pH, low water holding capacity, high erodibility and extremely high temperature and poor soil microbial activity. Mining activities have severe deleterious effects on plants and the soil microbial community that must be ameliorated with additional amendments in order to achieve successful re-vege...
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