種群研究 的英文怎麼說
中文拼音 [zhǒngqúnyánjiū]
種群研究
英文
population study-
In the present study, aflp ( amplified fragment length polymorphism ) markers was used to examine population of abies yuanbaoshanensis in order to understand the level of population genetic variation and genetic structure. the result would help to evaluate its evolutionary potentiality and the degree of being endangered and could provide scientific basis for making right protection strategy. high - quality dna was extracted using ctab method from those tender leaves of forty - three fully - developed trees in population abies yuanbaoshanensis
本研究選用一種高效的檢測遺傳變異的分子標記? ? aflp技術來分析元寶山冷杉種群的遺傳多樣性，旨在了解該種群在分佈區內的遺傳變異水平和遺傳結構情況；研究結果將有助於更清楚地認識這一瀕危類群的生存潛力和瀕危程度，而且可以為制定何種挽救和保護措施提供科學的依據。They are jinfo mountain in nanchuan county ( natural protection section ), wuling mountain in qianjiang county ( national emphases forest demonstration county which forest cover rate is beyond 50 % ) and zhongliang mountain in beibei county ( artificial destruction is very grave ). some main land use patterns i. e. woodland, garden, infield, abandon infield, shrub and grassplot are selected in those three sample sites. four aspects on soil fertility index of karst environment under different land use patterns in these three sample sites, are revealed in this paper, by using the field test, indoor measure and analysis, outdoor experiment and field investigation, and the knowledge and technique of soil, ecology, physics and chemistry etc. they are physical characteristic ( effective soil thickness, organic layer thickness, soil texture, water - stable aggregate and soil water etc. ), chemical fertility ( organism, omni - n, omni - p, omni - k, alkali - nitrogen, available p, available k and rapid available k etc. ), soil animalcule ( bacteria, fungi, actinomyces and their grosses ) and soil - seed - pool ( plant community diversity index ) in karst ecosystem
本研究以重慶市的南川金佛山（自然保護區） 、黔江武陵山（國家重點退耕還林示範縣，森林覆蓋率50以上）和北碚中梁山（遭人為破壞嚴重）典型巖溶區為對象，選擇了幾種重要的利用方式，包括林地、果園、耕地、棄耕地和灌草坡，採用野外巖溶生態調查和室內試驗測量分析相結合的方法，以不同土地利用方式巖溶土壤肥力為重點，對不同土地利用方式土壤肥力特徵進行量化分析，找出巖溶土壤肥力差異的主要方面及其根本原因，論文主要從土壤剖面物理退化指標（有效土層厚度、有機質層厚度、質地、團聚體、水分含量等） ，化學肥力退化指標（有機質、全n 、全p 、全k 、堿解n 、速效p和速效k等） ，樣地土壤微生物指標（細菌、真菌、放線菌數量及總量）以及樣地土壤種子庫植物群落多樣性等4個方面對重慶典型巖溶區的土壤肥力特徵進行了較為詳細的分析研究，為巖溶地區士壤資源的合理利用及結構的調控管理提供依據。By means of discontinuous tris - hcl buffer system and poly aery 1 amide gel electrophoresis ( page ), zymogram of 23 species of 11 genera in 4 subfamilies mirinae, orthotylinae, phylinae and deraeocorinae are gained. by specific primer pcr and sequencing, 57 cyt b gene 433bp sequences are obtained from 34 species respectively belonging to 17 genera in 5 subfamilies mirinae, orthotylinae, phylinae, deraeocorinae, bryocorinae from 64 species of 23 genera which involved in this research, and 2 outgroup species of family anthocoridae as well. 1
首次通過特異引物擴增和基因測序的研究方法從被試的5亞科23個屬的64種盲蝽中獲得了盲蝽亞科、合墊盲蝽亞科、葉盲蝽亞科、赤爪盲蝽亞科和蕨盲蝽亞科bryocorinae5個亞科17個屬的34種盲蝽以及外群花蝽科anthocoridae2種花蝽的cytb基因序列57條。Under mixed culturing conditions, it was observed that bacterial number rapidly incre ; ised soon after the lysing of host cells. on the contrary, while the non - host cyanobacterium ( i. e. anabaena flos - aquae ) was incubated in the mix culturing system, the breeding of the bacteria could be inhibited. it may be suggested from the result above that cyanophage could bring about the changes in microorganism populations
調查結果顯示， 19個採集的水樣中有6個含有裂解織線藻的噬藻體，而且水樣未經濃縮即能裂解宿主，說明噬藻體在淡水中分佈較廣泛，裂解性也較強；混合培養條件下的研究結果表明，噬藻體裂解宿主后，細菌數量快速增加，而當培養系統中有非宿主藻類存在時，細菌的增殖則受到非宿主藻的抑制，說明噬藻體可以顯著改變系統中微生物的種群結構。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 ） 。The reproductive characteristics and population structure of artemisia ordosica, hedysantm scoparium, caragana korshinskii and the reproductive characteristics of annual plants eragrostis poaeoides and bassia dasyphylla were observed in shapotou artificial revegetation area. stability of the artificial vegetation was appraised from the views of its persistence and variability under local natural condition. the study showed that : the artificial - natural vegetation built with sandbreaks and plants is stable in shapotou area
通過對沙坡頭人工固沙植被區主要建植種群檸條（ caraganakorshinskii ） 、花棒（ hedysarumscoparium ）和油蒿（ artemisiaordosica ）的繁殖特性及種群結構的研究，以及自然侵入的一年生草本植物小畫眉草（ eragrostispoaeoides ）和霧冰藜（ bassiadasyphylla ）繁殖特性的研究，探討了在植被的持久性和變異性，分析評價了主要受惡劣環境壓力下的人工固沙區植被的穩定性。During the primary research work of chengjiang biota, the paleontologists had an idea that the bivalved arthropod kunmingella douvilleiyas the dominant species because they found that eighty percent of the fossils they excavated in chengjiang fossil lagerstatte were kunmingella douvillei. and they also found that naraoia longicaudata, naraoia spinosa and isoxys auritus which belong to arthropoda were the sub - dominant species
在澄江生物群研究初期，雙瓣殼節肢動物朵氏昆明蟲（ kunmingelladouvillei ）化石數量占澄江化石庫中所有化石產量的百分之八十，因而古生物學家曾認為kunmingelladouvillei是該庫的優勢種。Seven plots selected from wanglang reserve were distributed in different types of forest and at different altitude, and different plot has different microclimate. soil property, microbial population, soil nutrient content of forest soil were determined in wanglang natural reserve, from may to october 2002 to july 2003, the ecological distribution of three main groups, bacteria, actinomycete and fungi were determined in the forest soils by the cell enumeration methods. six kinds of physiological groups, including ammoniation bacteria, nitrification bacteria, nitrosification bacteria, aerobic autogenesis azotobacter, aerobic cellulose - decomposing bacteria and anaerobic cellulose - decomposing bacteria were enumerated by the most - probable number ( mpn )
2001年10月在王朗自然保護區內設立了3個定位研究樣地和4個臨時樣地，通過多次現場采樣與室內實驗分析，測定了白樺林、岷江冷杉林、紫果雲杉林、繡線菊-羊茅群落、羊茅群落及高山柳灌木叢等6種不同植物群落內土壤微生物三大類群數量、功能微生物數量、土壤養分，並在固定樣地內使用埋袋法進行了三個埋藏深度的凋落物分解袋試驗，初步研究了枝條、闊葉、針葉等凋落物組分在不同分解階段所含養分的動態變化。Study on the species diversity of plant community and coniferous bark beetles community diversity in niubeiliang nature reserve
牛背梁自然保護區植物群落和針葉樹小蠹蟲群落物種多樣性研究Form. taxus chinensis var. mairei is protecting plant in the first class, which is a precious and endangering plant in china in this paper, the quantitative characterics of form. taxus chinensis vsr. mairei population including age structure, spatial distribution pattern, growth dynamics of tree basal area, niche characterics, fractal dimension and competition between specises were studied using methods of mathematics ecology from the angle of population ecology of form. taxus chinensis var. mairei, then the prent state and the endangering causes were analysed. this research offers gist to protecting and enlarging the crude resourse of form. taxus chinensis vsr. mairei population, afforesting plantation and sustainable utilize for us
本文從南方紅豆杉種群生態學的角度、主要應用數學生態學的方法探討南方紅豆杉種群的數量特徵，包括南方紅豆杉種群年齡結構、種群空間格局（探討分佈格局動態規律與生境相互關系） 、不同立地條件下種群優勢度增長趨勢、生態位寬度、生態位相似比例、生態位重疊、空間占據能力及種間競爭等，分析其目前現狀及瀕危原因，期望為南方紅豆杉野生資源的保護和擴大、營造人工林及可持續利用提供理論基礎，也為瀕危植物種群生態學的研究提供參考。The growth dynamics of tree basal area of form. taxus chinensis var. mairei population in different altitude were discussed using the liu - logistic model, and the results showed that the altutide of 790 meters is more suitable to the survive of form. toms chinensis var. mairei population than 990 meters. plot sampling was selected and dynamic analysis was used to study the height structure of taxus chinensis var. mairei population, and the quadrate picture of height structure and the curve of survival rate were drew
運用改進模型對南方紅豆杉種群在不同海拔梯度的種群優勢度增長進行了探討，表明海拔790m處的南方紅豆杉具有較大的環境容納量，但增長速度不快，海拔990m處的南方紅豆杉種群環境容納量不高，但具有較大的增長速度，這可能與群落的發育階段不同有關，兩地海拔均為南方紅豆杉適宜的生長海拔高度，相比而言，海拔790m的珍稀瀕危植物南方紅豆杉種群數量特徵的研究高度更宜於南方紅豆杉種群的生長。The method of modified simplex was applied to optimize the models, and the fitting results show that liu - logistic model was more suitable than logistic model to the actual growth trend of form. taxus chinensis var. mairei population, and the highest growth rate of basal area was the tenth age class, namely the phase when breast diameter was 68 ~ 76 cm
以胸高斷面積代替種群生物量，分別採用logistic常規模型及劉金福提出的logistic改進模型對南方紅豆杉種群的增長動態進行研究，運用改進單純形法對模型進行優化，擬合結果表明改進模型比logistic常規模型更符合南方紅豆杉種群的增長趨勢，南方紅豆杉種群的最大增長速度出現在第10齡級，即胸徑為68 76cm時期。Robustness of our results was confirmed by high bootstrap support of all nodes in the trees. this result contradicts the batrachia hypothesis ( a salamander + frog grouping ), and is consistent with bolt ' s hypothesis ( 1991 ) basing on the morphological data. the result was also supported by previous molecular studies based on mitochondrial and nuclear rrna data
這個結果與蛙類假說是相矛盾的，與bolt （ 1991 ）中國澤蛙線粒體基因組結構及種群系統地理學研究在形態學基礎上提出的絨蝶類和蚓螺類為姐妹群關系的假說相一致，並得到建立在線粒體和核trna基因數據基礎上的許多分子研究的支持。Three methods, namely, community species composition similarity analysis, community composition similarity analysis, and community characteristic similarity analysis, were employed to study the similarity of insect pest - natural enemy communities of three rice types ( early rice, middle - season rice and late rice ) and their three development stages ( tilling stage, boot stage and milk stage ) in the yangtze - huaihe region of anhui province
摘要採用群落種組成相似性分析、群落組成相似性分析和群落特徵相似性分析3種方法，研究了安徽江淮地區早稻、中稻、晚稻3種稻型及分蘗、孕穗、乳熟3個生育期害蟲天敵群落的相似性。In the present study, eighty - one species of suborder flabellifera are found and described, of which 13 are new species and the other 29 species are recorded for the first time from chinese waters. key to chinese families and genera are provided. discussion on taxonomic problems is given and brief notes of the distribution are provided
本文以傳統的形態分類為主，結合現代分類學的手段和方法解決近似種、疑難種的準確鑒定問題，搞清中國的屬種及分類上存在的錯誤和混淆，並結合已有的此類群研究結果，進行地理區系的比較。Progress and prospect of the lolium - festuca complex
羊茅黑麥草種群研究進展及前景展望This most intimate relationship between different genera has not been reported before in chengjiang fauna. 5. based on the material of chengjiang fauna, the evolution of introverts were discussed in chapter v. the early introverts have been divergent in the early cambrian
在cricocosmiajinningensis表面發現附生的可能的腕足動物inquilinushaikouensisgen . etsp . nov . ，這種不同物種之間的迄今為止最為親密的關系在澄江動物群研究中尚屬首次報道。And through leslie matrix analysis, we deduced, except of the subpopulation at altitude 490m, the subpopulations of lilium tsingtauense will not die out if not been disturbed badly. we estimated the growth ability and resistance ability of both metapopulation and local population by use the method of quamitative analysis for population structura1 dynamics. the growth ability order is population l > population 2 > population 3 > population 5 > population 6 > metapopulation > population 4
川叩iqu n了e ）復合種群研究摘要從種群年齡結構的穩定、衰退、增長概念出發，以種群結構參數為依據，運用加權法與條件概率乘法法則，定量椎導出衡量種群年齡結構及群落結構的動態指數，該方法克服了過去在植物種群結構動態比較評價中粗放的等級歸類劃分的缺陷，並能解決結構動態定量比較評價問題，因而認為有普遍使用的價值。Based on the investigations of 46 species of fossil spores and pollen belonging to 28 genera which were found from the yongping formation and wayaopu formation of upper triassic in tongchuan region of shaanxi province, the early to late late triassic palynoflora in the region was established
摘要本文基於陜西銅川地區上三疊統水坪組和瓦窯堡組發現的孢子花粉化石28屬46種的研究，建立了研究區晚三疊世早期至晚期孢粉植物群。Development of spf chicken flock in china
種雞群研究進展分享友人