geographic index 中文意思是什麼

geographic index 解釋
地理位置索引
  • geographic : adj. 地理學的，地理的。adv. -ically
  • index : n （pl es dices ）1 索引。2 指標，標準，標志。3 示[食]指 （＝index finger）。4 指數。5 【印刷】指...
  1. Both gleason - index and g - f index of species diversity are used to quantify biodiversity ; data obtained based on global positioning system ( gps ) and geographic information system ( gis ) is used to calculate the area and number of patches of various categories so as to ecologically evaluate changes of the landscapes

    本次研究採用gleason指數和g - f指數測度影響區的生物多樣性。在野外使用全球定位系統獲得資料的基礎上，再利用地理信息系統統計各拼塊的面積、數量等進行景觀生態評價。
  2. By the methods of remote sensing ( rs ) and geographic information system ( gis ), and based on the estimations of degradation degree, risk degree anti easy - restoration degree of degraded grasslands, an ecological management index ( emi ) model of grassland was established to approach the practical ways of optimizing management of degraded grassland

    摘要利用遙感監測和空間信息分析技術，通過對退化草地的退化等級評估、風險度評估以及易恢復度評估，構建了草地生態優化管理指數（ emi ） ，探討了退化草地生態優化管理的實踐途徑；並以錫林河流域為例，分析了退化草地生態優化管理指數。
  3. The index of diversity of grass is larger in fuxingsi, juyunfeng and yuanxiaofeng than that of continuous evergreen broadleaved forest, however, it is smaller in other fragmental evergreen broadleaved forests. ( 3 ) there is not clear different in geographic composition of plant floristic family between continuous and fragmental evergreen broadleaved forests

    緒雲山生境片斷化對常綠闊叫林生物多樣性的形響（ 3 ）片斷森林和連續森林植物區系科的地理成分構成變化不是很大，而屬的地理成分構成有一些變化。
  4. In the thesis, by the object - oriented method, we study and explore deeply the data model of spatial object, the definition and expretion of semantics, the basic relaionship among objects, the basic spatial operation and topology structure, the orgazization of geographic data, the storage of data and the spatial index

    本論文採用面向對象方法，對gis中空間對象的數據模型、語義定義和表示、對象間的基本語義關系、對象的基本空間操作及拓撲結構、地理數據的組織、數據的存儲和空間索引等方面進行了較全面的探索和研究，並在此基礎上，提出了面向對象gis的整體概略框架。
  5. First of all, the paper illustrates the concepts and the fundamental functions of gde. then it studies four primary problems. those are data model, data index, geographic data management and geographic data access objects

    本文以地理數據庫引擎（ geographydatabaseengine ， gde ）為研究對象，在描述了gde的概念和基本功能的基礎上，研究了gde四個主要方面的問題：數據模型、數據索引、地理數據管理以及地理數據訪問對象。
  6. In the case of data index, the paper generalizes several advanced data index at the present time and analyzes the feature of data index based on database emphatically. then it illustrates the spatial ordering quad - tree index based on database of gde. in the case of geographic data management, the paper studies and tests several primary technologies, such as data concurrent access, data storage, data query, data update and maintenance, data transmission and data buffer, and so on

    數據模型方面，在對常見的數據模型進行描述和分析的基礎上，提出了滿足海量數據高效存儲和管理的gde數據模型，通過實驗對數據的存放方式和效率進行了測試；數據索引方面，歸納總結了當前提出的較為先進的幾種數據索引方法，尤其是著重分析了基於數據庫的數據索引的特點，並對gde基於數據庫的可排序四叉樹索引進行了重點闡述；地理數據管理方面，對數據並發訪問、數據查詢、數據更新與維護、數據傳輸以及數據緩存等關鍵技術進行了闡述和實踐；地理數據訪問對象方面，介紹了採用面向對象技術設計實現的地理數據訪問類。
  7. The average number of alleles per locus ( a ), percentage polymorphic loci ( p ), observed heterozygosity ( ho ) and wright ' s fixation index ( f ) is 2. 2, 77. 9, 0. 433, - 0. 138, respectively. the species also had higher variation than that of the other woody angiosperms widespread. moreover, e. mollis has higher population genetic variation than that of 26 long - lived woody endemics with narrow geographic distributions

    Biosys - 2軟體計算得知，在翅果油樹種群中，每個位點等位基因的平均數a = 2 . 2 ，多態位點百分率p = 77 . 9 ，遺傳多樣性he = 0 . 375 ，遺傳多樣性水平明顯高於蜂媒植物，而且也比其它的廣布木本被子植物的遺傳多樣性水平為高。
  8. There are two molders of air quality assessment in the molder base : standard index unit and api. molders of air quality assessment has been finished with mapbasic. table files in chengdu atmospheric environment geographic information system can be used directly

    建立了大氣質量評價模型庫，並將其集成到成都市大氣環境地理信息系統中，在該模型庫中，包括我國近十年來常用的標準型指數單元法和目前我國47個重點城市在進行空氣質量日報時採用的api指數法。
  9. As the display of electronic multi - media military geographic documentations is based on multiple topographic maps, increasing the display of electronic maps with macro vector data is the chief problem to solve. the paper introduces the spatial index technique at detail for it

    多媒體電子兵要地誌以多幅地圖為顯示平臺，海量數據電子地圖的快速顯示是面臨的首要問題，作者在文中詳細介紹了空間索引技術。
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