species evenness 中文意思是什麼

species evenness 解釋
種均勻度
  • species : n. 〈sing. , pl. 〉1. 種類；【生物學】（物）種。2. 【邏輯學】種。3. 【原子能】核素。4. 【法律】形式。5. 【宗教】聖餐物。
  • evenness : 光滑度
  1. 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。
  2. The following contents were mainly studied : ( 1 ) aspect, structure as well as characteristic of species composition between fragmental evergreen broadleaved forests and continuous evergreen broadleaved forest ; ( 2 ) species diversity, species abundance and species evenness between fragmental evergreen broadleaved forests and contin. us evergreen broadleaved forest ; ( 3 ) plant floristic compositions at family and genus levels between fragmental evergreen broadleaved forests and continuous evergreen broadleaved forest ; ( 4 ) life form between fragmental evergreen broadleaved forests and continuous evergreen broadleaved forest ; ( 5 ) microclimate factor ( sun radiation, temperature, wind velocity, humidity ) in different level pattern ( open, edge and interior ) between fragmental evergreen broadleaved forests and continuous evergreen broadleaved forest ; ( 6 ) the relations between environment and soil factors as well as species diversity of forest community between fragmental evergreen broadleaved forests and continuous evergreen broadleaved forest

    主要研究以下內容： （ 1 ）片斷和連續常綠闊葉林的外貌、結構和物種組成特徵； （ 2 ）片斷和連續常綠闊葉林的物種多樣性、豐富度和均勻性； （ 3 ）片斷和連續常綠闊葉林的科（ ? ）屬水平的植物區系成分； （ 4 ）片斷和連續常綠闊葉林生活型組成； （ 5 ）在不同的水平梯度格局上（林外、林緣和林內） ，片斷和連續常綠闊葉林的小氣候要素（光照、溫度、風速、濕度等） ； （ 6 ）片斷和連續常綠闊葉林的環境和土壤因子，與群落的物種多樣性之間的關系。實驗結果表明： （ 1 ）各片斷森林的外貌特點基本上和連續森林一致。
  3. 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 ） 。
  4. E. due to favorable condition of soil moisture, weak activity of wind and sand, and low inter - specific competition intensity resulting from repeated alternation between sand dunes and inter - dunes, the plant species richness and the plant species evenness are quite high in inter - dunes. f

    由於丘間地水分條件較好，受風沙活動的影響較小，同時由於流動沙丘和丘間地的不斷更替降低了物種之間的競爭強度，就使丘間地具有較高的物種豐富度和物種均勻度。
  5. 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。
  6. Analysis on the species richness and diversity index, community evenness in different plots and layers of evergreen broad - leaved forest in shiyang forest center in wencheng, zhejiang province resulted that species richness and diversity index, community evenness of the second sublayer of tree layer was much greater than that of the first sublayer in the vertical structure of the community

    對文成縣石?林場常綠闊葉林的不同樣地、不同層次的物種豐富度、物種多樣性指數和群落均勻度進行了分析，結果表明:在群落垂直結構中，喬木層第2亞層的物種豐富度、物種多樣性指數、群落均勻度顯著大於第1亞層。
  7. Number of species and individuals, species diversity index and evenness, and proportion of wader birds decreased from bay - mouth to bay - head, and was lowest in midbay

    其中灣口的水鳥物種數、個體數量、多樣性指數、均勻度指數以及涉禽所佔比例均為最高，灣底次之，灣中部最低。
  8. 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。
  9. The species richness and diversity index of the tree layer and the shrub layer was obviously higher than that of the herb layer, and their evenness had evident difference

    喬木層、灌木層的物種豐富度、物種多樣性指數均大於草本層，且差異極顯著，群落均勻度差異顯著。
  10. The results shows that the community richness, species diversity indices and evenness of tree layer and shrub layer share the same order, of which is higher in pure limestone region than that of in pure dolomite region, but it reverse in herb layer ; the coefficient of similarity is considerably low between all plots, while species turnover rate is quite high among the plots and is higher in dolomite region than that of in limestone ; in different karst regions, karst processing leads to niches diversity characterized by special morphologies and special element geochamical features, and therefore affect the dynamic and features of plant communities

    我們在最有代表性之一的貴州茂蘭喀斯特森林保護區選取純灰巖和純白雲巖兩種巖性的喀斯特環境，對其元素地球化學特徵及其中原生性植物群落的相異性和物種多樣性進行了對比，結果發現：不同巖性區域多樣性：喬木層和灌木層為純灰巖區純白雲巖區，草本層為純白雲巖區純灰巖區，總體上純灰巖區的高於純白雲巖區的；各樣地間的相似性系數都很低，相同巖性類型內的明顯高於不同巖性類型之間的相似度；物種周轉率高，且白雲巖區高於石灰巖區，種類組成差異明顯；喀斯特區可溶巖地球化學背景通過喀斯特作用導致特殊的地形條件與元素地球化學特徵，並引起局部小生境的分異從而影響植物群落特徵。
  11. The results showed that : from north - facing slope to south - facing slope and plain field, the species evenness and diversity index decreased ; from plain field to north - facing slope and south - facing slope, richness index also decreased

    結果表明，當生境由陰坡向灘地到向陽坡變化時，各種多樣性指數的變化順序為，物種豐富度：灘地陰坡陽坡；均勻度和多樣性指數：陰坡陽坡灘地。
  12. And the changes of evenness of species in most cases is not obvious in the course of succession

    除了櫟樹林喬木和平榛灌叢的喬灌木的均勻度較低外，喬木、灌木和喬灌木其他群落的均勻度變化不明顯。
  13. Species, the diversity index ( h " ) and evenness ( j ) of phytoplankton community increased gradually from inside of the bay to outside of the bay, and was greater in the outer bay than that in the inner bay. the density of total cell number increased from inside of the bay to outside of the bay, and was greater in outer and eastern bay than these in inner and western bay

    調查海區浮游植物群落的種類數、多樣性指數與均勻度都表現為灣外多於灣內，灣內外側高於灣內內側的趨勢，而總細胞數的平面分佈呈現灣外高於灣內、灣內外側高於內側、東部高於西部的基本格局。
  14. By using of the richness, diversity and evenness indices, combined with twinspan, dca, dcca, multi - factors regression, correlation analysis techniques and so on, species diversity and diversification mechanism were studied. the communities were classified into eight types by twinspan. the first axis of dca indicated basically the diversification of soil water, while the second axis indicated basically the disturbance degree by people. the correlations between n, organic matter, elevation and the first axis are negative association, and the others are positive

    通過豐富度指數、物種多樣性指數和均勻度指數，結合twinspan 、 dca 、 dcca排序，多元回歸和相關分析，研究了物種多樣性及其變化機制，把植物群落分為8個群落類型；物種多樣性指數的dcca第一軸基本上反映了土壤水分的變化，第二軸基本上反映了人類對群落的干擾程度，物種多樣性指數隨土壤水分的增加而增大，隨人類的干擾程度的增加而減小。
  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. By studying the birds composition, quantity, species diversity and evenness, consumer biomass of community ; feeding niche, gathering and encountering probability of birds, we illustrate the characteristics of mountainous secondary forests wintering birds community in temperate zone in northeast china, and the changing trends and the relation with environments of birds community for 12 years fore - and - aft

    通過對群落內鳥類組成及數量、種的多樣性和均勻性及消費生物量、鳥類的取食生態位，鳥類的集群及種間相遇幾率等方面的研究，基本闡明了溫帶環境中我國北方山地次生闊葉林冬季鳥類群落結構的特點，以及12年前後其鳥類群落結構的變化趨勢、與環境變化的關系等。
  17. Gradually, with the more and more transpiration of the vegetation, and with the reduction of the deep soil moisture, in the end, a kind of balance of soil moisture will appeared and be kept for ever between the precipitation and the transpiration of vegetation, and the manual sand - fixing vegetation will be transformed consequently into its natural climax stage completely, in which the dominant plant is leymus secalimus, and in which the plant species richness is not too low, but the plant species evenness is the lowest

    設置機械沙障和生物沙障的初期，植物的物種豐富度、物種均勻度會有一個暫時的提高；但是在人工固沙植被的發育盛期，物種豐富度會降低；隨植物群落蒸騰耗水量的不斷增大，人工植被不斷地衰退，最後發展到賴草土壤頂極群落，此時的物種豐富度並不低，但是物種均勻度很低。
  18. 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。
  19. 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。
  20. 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。
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