species diversity index 中文意思是什麼

species diversity index 解釋
種分歧指數
  • 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。
  • diversity : n. 1. 不同，異樣，差異。2. 繁多，多種，多樣，駁雜，參差。
  • 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. 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，通過rapd資料的聚類分析及相關性分析研究，發現無葉假木賊和角果藜自然種群的遺傳結構與綠洲沙漠過渡帶的微生境生態因子（主要是土壤因子）相關，其中無葉假木賊亞種群遺傳多樣性水平不僅與土壤含水量（ w ） 、鉀鈉離子濃度（ k + na ）和氯離子濃度（ cl ）呈顯著的正相關（ p 0 . 05 ） ，還與土壤中有機質（ som ） 、全氮（ nt ）和全磷（ pt ）含量呈顯著的負相關；同時，角果藜種群的遺傳多樣性水平與土壤中有機質（ som ）和全氮（ nt ）含量呈顯著的正相關，而與co _ 3 ~ （ 2 - ）濃度呈顯著的負相關；除此之外，其它土壤生態因子與兩物種遺傳多樣性水平的相關性均不顯著（卜0 . 05 ） 。
  2. A species diversity index(sdi), which is difined in eq. (1－2).

    種類多樣指數（SDI）可由式（12）求得。
  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. The species richness and diversity index order of coniferous and broad - leaf forest and evergreen broad - leaf forest in different geology plots was as follows : shrub layer > herb layer > tree layer ; in shrub plots, the order was herb layer > shrub layer. in general jsw, jsi and ea index order was herb layer > shrub layer > ree layer. that indicated that the species of tree and shrub in karst area distributing is not even, and the species, which are dominant and adapt to the karst environment are cleaer

    不同地區樣地針闊混交林和常綠闊葉林物種豐富度指數、多樣性指數均表現為灌木層草本層喬木層，而在灌叢樣地，物種豐富度和多樣性指數表現為草本層灌木層；整體上，石灰巖地區樣地jsw 、 jsi和ea指數為草本層灌木層喬木層；砂頁巖地區樣地為灌木層草本層喬木層。
  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. Results demonstrate that with the succession going on from herbosa shrubs coniferous forest theropencedrymion evergreen broad - leaved forest, abundance and diversity index of species, biomass and productivity of vegetation all show a rising trend prior to the formation of a mature and stable biotic climax

    結果表明：隨著草叢灌叢針葉林針闊混交林次生常綠闊葉林正向演替的進行，在未形成成熟而穩定的頂極群落之前，物種豐富度、物種多樣性指數、植被生物量及生產力都呈增大趨勢。
  7. The research result is following : the annual species richness index of studied forest plant community averaged 64. 688, the species diversity index was 2. 982. the proportion of every functional group of forest plant community is : herbaceous layer ( average is 68. 89 % ) > tall tree layer ( average is 15. 266 % ) > shrub layer. ( average is 15. 845 % ) the proportion of every functional group in forest insect communities is remarkably different, and the order of the proportion is herbivorous insect group ( average 0. 729 ) > predatory natural enemy insect group ( average 0. 136 ) > parasitical insect group ( average 0. 135 ). with seasonal change, the proportion of herbivorous and predatory insect group decreased obviously, while that of parasitical insect group increased on average by 147 %

    研究結果如下：森林植物群落種的全年物種豐富度指數平均為64 . 688種，多樣性指數為2 . 982森林植物群落內各功能類群物種所佔比重依次為：草本層（平均為68 . 89 ） >喬木層（平均為15 . 266 ）灌木層（平均為15 . 845 ） 。森林昆蟲群落中，全年各功能類群所佔比重以植食性昆蟲類群為最大，平均佔0 . 729 ；捕食性昆蟲類群次之，平均佔0 . 136 ；寄生性天敵類群為最小，平均為0 . 135 。
  8. The data was analyzed with three softwares : tfpga popgene32 and amova155 which are tools for molecular analysis. the percentage of polymorphic sites at species level was 86. 93 %, and they were 83 % 68 % and 80 % at population level. nei " s gene diversity index was 0

    但長葉榧還保留了較高的遺傳多樣性：物種水平的nei氏基因多樣度指數達到0 . 2479 ， shannon信息指數也達到了0 . 3807 ，而其物種水平的多態位點百分率高達86 . 93 。
  9. Several results were concluded : firstly, the population of t. jackii was decreasing sharply and its living area was contracting, so the percentage of genetic variance among t. jackii populations was lower than that within its population ; secondly, its genetic diversity index was relatively high ; thirdly, according to its gene flow index, the population disintegration of the species could be prevented by genetic communication among populations of the species ; finally, the similar index between the populations from jiangshi nature reserve and from xufan reservoir was higher than that between the populations from jiangshi nature reserve and from xufanggeng, corresponding with the fact that it is nearer between jiangshi nature reserve and xufan reservoir than that between jiangshi nature reserve and xufanggeng

    2 、長葉榧的遺傳多樣性分析，分析了多態位點百分率（ percentageofpolymorphicsites ） 、 nei氏基因多樣性指數（ nei 』 sgenediversityindex ） 、 shannon信息指數（ shannon 』 sinformationindex ） 、居群間的相似系數（ geneticsimilarityindex ）和遺傳距離（ geneticdistance ） 、遺傳變異在居群間和居群內的分佈（ thepercentageofvarianceamongandwithinpopulation ）及基因流（ geneflow ） 。結論是：分佈在群體間的遺傳變異較分佈在群體內的遺傳變異小，說明該生物的分佈范圍越來越狹小。
  10. 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。
  11. Soil pollution index and olsen - p content were more closely related to species diversity in polluted soil, while ph and olsen - p content were more closely related to spore den sity

    重金屬污染土壤中，綜合污染指數和速效磷含量是影響種的豐度的主要因素，土壤ph值與重金屬綜合污染指數是影響孢子密度的主要因素。
  12. The results indicated that as the intensity of sward cleavage increased, elymus nutans and other plants that had high requirements in soil aeration and resource space presented an increased competitive edge and the species that had low requirements in soil aeration and resource space presented an opposite picture ; low - intensity sward cleavage could help increase species diversity to a certain extent, but the diversity index appeared to decline as a whole as the cleavage intensity increased ; the effects of sward cleavage on functional groups of the vegetations showed in such manner as e. nutans - represented grasses increased in their composition with the intensity of sward cleavage raised, and sedges and forbs decreased in their compositions with the intensity of sward cleavage raised ; sward cleavage showed a significant improving effect on primary productivity of the meadows and was capable of increasing the proportion of quality - grass biomass to the total plant biomass ; sward cleavage could be independently employed as an effective measure to rehabilitate and improve alpine - meadow grasslands and thus played a basic and key role in the technical combination aiming at establishing hay fields characterized by e. nutans

    結果表明：垂穗披堿草等對土壤通透性和資源空間要求較高的物種，競爭力隨劃破強度的增加而上升，而對土壤通透性和資源空間要求相對較低的物種則相反；輕度劃破干擾對提高物種豐富度具有一定的促進作用，但多樣性指數則總體上表現為隨劃破強度的增加而呈下降的趨勢；劃破干擾對植被功能群的影響表現為以垂穗披堿草為代表的禾草類組分隨干擾強度的增加而顯著上升，莎草類和雜類草組分隨干擾強度的增加而顯著下降；劃破干擾對草地初級生產力的提升具有顯著的促進作用，且可顯著增加植物總量中優質牧草的比重；劃破干擾可獨立作為高寒草甸類草地恢復與改良的有效措施，在定向培育垂穗披堿草型割草場的技術組合中具有核心和基礎性的地位。
  13. 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。
  14. Spatial diversity index was cited to describe the wild life habitat pattern quantitatively. and the habitat pattern change of wild animals and red - crowned cranes ( grus japonensis ), as indicator species, between 1988 and 1998 was analyzed

    引用空間多樣性指數（ s _ d ）對本區野生動物生境格局和指示物種丹頂鶴的生境格局進行了定量描述，並分析了其十年間的生境格局變化。
  15. 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。
  16. ( 2 ) in general, in comparison with continuous evergreen broadleaved forest, these fragmentation forest have smaller species diversity index, and different life forms have different represents

    （ 2 ）在與連續森林的比較上，總的來說，這幾個片斷森林的物種多樣性指數均較連續森林低，不同的生活型表現不一樣。
  17. 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。
  18. The species diversity index of the tree layer was a bit low, and the general trend was shrub layer > treelayer > herb layer

    喬木層物種多樣性指數偏低，垂直結構各層次間物種多樣性大小依次為灌木層>喬木層>草本層。
  19. Acoording to the comparison among bird species in five different habitats in jinzhongshan, the results indicate that the highest bird species diversity index is in scrub and farmland ( 3. 04 ), and the lowest in water area ( 2. 14 )

    本文還對金鐘山鳥類保護區的5種不同生境類型的鳥類種類組成作了比較，結果表明灌叢農田的鳥種多樣性指數最高，為3 . 04 ；水域的鳥種多樣性指數最低，為2 . 14 。
  20. The relationship between the vertical structure in the secondary succession community of the evergreen broad leaved forests on the jinyun mountains in chongqing and species diversity in them was estimated and analyzed based on their vertical structure and species diversity index

    從垂直結構和物種多樣性指數，測度分析了重慶市縉雲山常綠闊葉林群落次生演替序列垂直結構與物種多樣性的關系。
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