evenness index 中文意思是什麼

evenness index 解釋
均勻性指數
  • evenness : 光滑度
  • 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. Combining with fragstats software, landscape diversity index ( h ), landscape dominance index ( d ), landscape evenness index ( e ), fractal dimension, landscape contagion index and landscape fragmentation index are calculated. they show : ? grassplot landscape is a primary landscape type in gansu. the numbers of big patch is much more

    以甘肅省為例，基於景觀生態學基礎上，利用arcview和arc / info地理信息系統軟體對甘肅省景觀系統進行分類，結合景觀指標計算軟體fragstats計算出了甘肅省景觀多樣性指數（ h ） 、優勢度指數（ d ） 、均勻度指數（ e ） 、斑塊分維數、聚集度指數以及斑塊的破碎度指數。
  2. Community ' s a diversity is measured by simpson diversity index, shannon - wiener diversity index and pielou evenness index. the results show that habitats range in a diminishing sequence of diversity indices from broadleaf forest, broadleaf bush, grassland bush to bamboo forest ; that altitude belts range from 600 - to - 1200 - m belt, under - 600 - m belt to 1200 - to - 1800 - m belt, and no longicorn beetles was found above 1800 m ; months from july, may, june to august, a diversity analysis shows that complicated habitats can hold higher biodiversity

    結果表明，不同生境多樣性指數從高到低的順序是：闊葉林、闊葉灌叢、灌草叢、竹林；不同海拔多樣性指數從高到低的順序是： 600 ? 1200m區間、 600m以下區間、 1200 ? 1800m區間， 1800m以上區間暫未發現天牛科昆蟲；不同月份多樣性指數從高到低的順序是： 7月、 5月、 6月、 8月。
  3. The density with the biodiversity increasing shows " m " model. ( 3 ) the correlation analysis shows : elevation, slope, development stage and biomass are main factors which affect the biodiversity pattern in the research region. the biodiversity of the quercus aliena var. acutesrata community shows the patterns with the elevation and slope affecting : on sunny slope, the species diversity increases with the elevation increasing below the attitude of 1640m and its climax is at this attitude ( the diversity index h = 1. 68 ), upward this point, the diversity index descends slowly. the evenness shows ascend trend with the elevation upward, its climax point at 1800m ( the evenness index jsw = 0. 78 ), then descending after this point

    （ 5 ）通過分析，銳齒棟群落生物量與生物多樣性呈現如下關系:在海拔1500一170枷范圍內，銳齒棟群落生物量與物種多樣性之間呈單峰曲線關系;在海拔1700一1900m范圍內，生物量與物種多樣性之間呈不明顯的波動關系;在海拔1900一2100m范圍內，生物量隨物種多樣性的增加而增大，通過對不同高程內生物量與物種多樣性分析發現，隨著海拔的上升，最大生物量對應的物種多樣性略有增加趨勢;在相同海拔和坡向條件下，生物量與物種多樣性之間也呈典型的單峰曲線關系;群落凈生產力與物種多樣性之間總體上也呈單峰曲線關系。
  4. We use the landscape acreage index, landscape fragmentation index, landscape apartness index, landscape diversity index, landscape dominance index, landscape evenness index and landscape shape index, to analyze the characteristics of the changes of landscape based on the landscape structure in 1996 and 2004

    研究過程中主要以1996年和2004年土地利用景觀格局為基礎，採用景觀類型面積指數、景觀破碎度、景觀分離度、景觀多樣性指數、景觀優勢度、景觀均勻度、景觀形狀指數分析區域土地利用景觀格局變化特點。
  5. The t - test result shows that the species diversity index, evenness index and consume biomass are no significant differences between 12 years fore - and aft

    T檢驗結果表明，多樣性指數、均勻性指數的消費生物量， 12年前後的差異不顯著（ p 0 。 01 ） 。
  6. Taking the land consolidation project of yizheng city in jiangsu province as an example, patch extension index, fractal dimension, diversity index, evenness index, dominance index, fragmentation index, corridor density, etc wee selected to analyze the characteristics of the landscape pattern before and after the land consolidation with the landscape ecology theory

    摘要運用景觀生態學理論方法，以江蘇省儀征市某土地整理項目為例，選取斑塊伸長指數、分維數、多樣性指數、均勻度指數、優勢度指數、破碎度指數、廊道密度等景觀指標，對項目區整理前後景觀格局特徵進行分析。
  7. The diversity index showed that neca > pca > cka, and so did the evenness index. the dominant concentration index showed that cka > pca > neck. so the stability of the arthropod community in neca is best and that in cka is worst in the three areas

    同時，常規對照棉田中時有發現的紅鈴蟲（ peetinophoragossypxellasaunders ） 、玉米螟（ ostriniafurnaeali : （ euenee ） ） ，在轉bt墓因棉田中沒有發生，表明轉bt基因棉對棉田中大多數鱗翅目害蟲具有良好的抗性
  8. The result suggests that the species richness index ranks as following among 6 stations : yangma islet > drogan - whisker islet > moon bay > jingouzhai > jingouzhai gravel, and yangma islet possessed the highest species diversity index, while jingouzhai the lowest, the order of species diversity index among 6 stations is yangma islet > moon bay > drogan - whisker islet > jingouzhai > zhifu islet > jingouzhai gravel, the order of species evenness index is : moon bay > drogan - whisker islet > yangma islet > jingouzhai > zhifu islet > jingouzhai gravel

    紅藻群落的物種豐富度依次為：養馬島芝罘島龍須島月亮灣金溝寨金溝寨礫石灘；物種多樣性指數以養馬島為最高，金溝寨礫石灘最低，依次為：養馬島月亮灣龍須島金溝寨芝罘島全溝寨礫石灘；物種分佈的均勻度指數依次為：月亮灣龍須島養馬島金溝寨芝罘島金溝寨礫石灘。
  9. We selected several landscape metrics, such as landscape diversity metrics, edge index, fractal dimension, evenness index, contagion index and so on

    對綠洲-荒漠景觀的鑲嵌測定包括景觀多樣性、邊緣特徵、分維數、均勻度、分散度和蔓延度等。
  10. Analysis from the whole area the shape of landscape was becoming regular and simple. ( 4 ) the diversity index and evenness index decreased and the dominance index increased

    從全區域尺度進行分析，景觀形狀趨于簡單化、規則化，可見人類對該地區的管理活動是增強的。
  11. H " was calculated using the shannon - wiener formula : h " = ? pi ? pi e was calculated using the pielou ' s evenness index e : e = h ' hmax = h ' ? s the results showed that diversity index on different parent materials varied between 0. 49 to 1. 02, the different parent materials followed the sequence of igneous rock > sedimentary rock > metamorphic rock > unconsolidated material ; the evenness index on different parent materials varied between 0. 27 to 0. 64, the parent materials followed the sequence of igneous rock > sedimentary rock > metamorphic rock > unconsolidated material

    多樣性指數運用shannon指數公式計算，均勻度指數運用pielou指數公式計算。分析結果表明發育于不同母巖上的多樣性指數范圍為0 . 49 1 . 02之間，從高到低依次為火成巖、沉積巖、變質巖和疏鬆物質；土壤均勻度指數范圍為0 . 27 0 . 64之間，從高到低依次為火成巖、沉積巖、變質巖、疏鬆物質。
  12. Biodiversity indices are much influenced by the types of the vegetation in jinfo mt. the species richness index, diversity index and evenness index of the plots in karst area raised when the plots were jamming early and slightly ; species richness index and diversity index of the plots in nonkarst area raised when the plots were jamming early and slightly, but evenness index fell. the diversity index and species richness index of original vegetation in karst area are lower than in nonkarst area

    不同植被類型顯著影響其生物多樣性的變化，金佛山石灰巖地區植被在受到中輕度人為干擾初期，其物種豐富度和多樣性、均勻度指數均有提高；砂頁巖地區植被受到中輕度干擾，豐富度和多樣性指數有所提高，均勻度指數呈相反趨勢；石灰巖地區原生植被生物多樣性和物種豐富度指數較砂頁巖地區的原生植被低。
  13. Diversity index on different terrain varied between 0. 28 to 1. 75, the terrain followed the sequence of level land - plain > sloping land - medium - gradient mountain > sloping land - medium - gradient hill > level land - valley floor > sloping land - medium - gradient escarpment zone > level land - depression > steep land - high - gradient mountain ; the evenness index on different terrain varied between

    發育于不同地形上的多樣性指數值范圍為0 . 28 1 . 75之間，從高到低依次為平原、中坡度、中坡度丘陵、山麓平原、中坡度峭壁帶、低洼地和高坡度山地;均勻度指數范圍為0 . 26 0 . 84之間，從高到低依次為中坡度、平原、山麓平原、中坡度丘陵、中坡度峭壁帶和低洼地。
  14. In the study, the dominance index and evenness index are used for analysis

    本研究採用優勢度指數和均勻度指數進行分析。
  15. The results showed that, in the course of wasteland restoration, the cultivated vegetation grew well ; the plant species was increased from 13 to 60, and the richness index, evenness index and diversity index of species was increased significantly ; the proportion of annual and biennial herbage in vegetation composition was decreased from 61. 5 % to 35 %, and the vegetation coverage was increased from 18 % to 80 %

    結果表明：荒灘恢復過程中，人工植被長勢良好，植物種類由恢復前的13種增加到60種，群落物種的豐富度指數、均勻度指數、多樣性指數均比恢復前顯著提高；生活型譜中一、二年生草本植物的比例由恢復前的61 . 5 %降低到35 % ，植被蓋度由恢復前的18 %增加到80 % 。
  16. The thesis used the diversity index, dominance index and evenness index to analyse the landscape patterns in the county, showing the embodying of the spatial characters caused by the man - made disturbance and landscape succession

    接著，對柘榮縣的景觀格局進行分析。選用景觀多樣性指數、均勻度指數、優勢福建拓榮縣景觀生態特徵及景觀生態規劃的研究度指數對景觀格局進行分析。
  17. Qualitative and quantitative investigation ( visual encounter surveys ) of terrestrial mollusca were carried out in each sampling site of mangshan nature reserve and babaoshan of guangdong. all terrestrial mollusca in each sampling site were collected and identified. a list of the name of the species of terrestrial mollusca, margalef species richness index ( d _ ( ma ) ), shannon - wiener index ( h " ) and pielou evenness index ( jsw ) were used to analyze their biodiversity

    對各個採集點的陸生貝類不但進行了定性調查，而且進行了定量調查（ ves法） ，對調查採集到的陸生貝類物種進行編目，並採用margalef豐富度指數（ d _ （ ma ） ） 、 shannon - wiener多樣性指數（ h 』 ） 、 pielou的均勻度指數（ jsw ）對陸生貝類多樣性進行了分析。
  18. Based on plant communities and plots investigation in jinfo mt. and experimental site in guilin, the author calculated the indices of every plot with its species richness index, simpson index, shannon - wiener index, pielou evenness index and alatalo evenness index. the author analyzed the character and variation of the biodiversity in different area and different layers about the plots in jinfo mt

    1採用典型樣方法，在金佛山和桂林實驗場選取典型樣地並做野外調查，分別計算各樣地的物種豐富度指數、 simpson指數、 shannon - wiener指數、均勻度指數、 pielou均勻度指數、 alatalo均勻度指數，對金佛山不同地區樣地生物多樣性以及不同地區不同層次生物多樣性特徵和變化進行分析。
  19. These diversity indexes indicate a trend - the more abundant and even the components and more complicated the habitats of the community, the higher value of these diversity indexes whether margalef species richness index ( d _ ( ma ) ), shannon - wiener index ( h " ), or pielou evenness index ( jsw ) were used to analyze the biodiversity of terrestrial mollusca. the change of shannon - wiener ( h " ) is accordant with species and margalef species richness index ( d _ ( ma ) )

    兩地區陸生貝類多樣性指數h夕與多樣性指數s 、苗劍的變化相一致，且s 、 h夕、或峨的值以莽山的紅旗橋和八寶山的五里坑為最高;陸生貝類均勻度指數（ js刃不受豐富度指數影響，但是均勻度指數影響多樣性指數h ， ，一般來說js ，高， h ，越高，但也有例外情況。
  20. The dominance index is often contrary to the diversity index, index of diversification and evenness index in change rules

    優勢度指數常常與多樣性指數、多樣化指數、均勻度指數的變化規律相反。
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