種群總數 的英文怎麼說
中文拼音 [zhǒngqúnzǒngshǔ]
種群總數
英文
population total-
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。Transgenic bt cotton mainly affect high - instar larvae by retarding the growth and intering the proceeding of ecdysis, pupation, and eclosion. the growth retardation leads to the postponement of growth period duration ( the showed that growth period duration prolonged 17 days ). feeding the larvae with the tissue of the transgenic bt cotton and the moths with the flower of transgenic bt cotton, the number of eggs and hatching rate decreased obverviously
轉基因藥防田中，天敵昆亞群落的個體數占整個昆蟲群落總個體數的10 . 0 % ，其優勢種為蜘蛛類、七星瓢蟲（ coceinellas叩te即uneitatalinnaeus ） 、龜紋瓢蟲（ prol ， laea少只ponjcagoeze ） 、大眼蟬長蜷（ prqp . ylaeajaponicagoeze ）和草嶺（助rys叩asepre即unetatawesmael ） 。This paper concerns studies on rhizobia in symbiosis with important legume soybean and peanut crops in china, following : 1 ) summarized bio - diversity of rhizobia, including indigeneous population, isolation frequency, strain type, distribution, and strain - host promiscuity and compatibility from large and small samples. 2 ) reviewed symbiont improvement in both sides of rhizobia and hosts, involving selection of effective rhizobial strains, evoluation and utilization of the host germplasm for symbiotic properties, and selection of the both sides for special characters. 3 ) discussed the subject on the rich symbiont germplasm resource in china and on further research being necessary to exploitation and utilization of the benificial germplasm
針對我國主要豆科作物大豆和花生的研究成果，並結合本身研究工作內容， （ 1 ）總結了與宿主共生的根瘤菌生物學多樣性，包括大、小樣本的土著根瘤菌群體數量、分離頻率、類型與分佈及其菌株宿主共生混交性與親和性； （ 2 ）評述了根瘤菌宿主植物共生體雙邊固氮改良，包括優良菌株的選育、宿主品種資源共生特性的評價與利用及特異性狀的選擇； （ 3 ）討論了我國這一類共生體資源的豐富性以及有必要進一步加大力度研究有益資源的開發和利用的問題。Abstract : this paper concerns studies on rhizobia in symbiosis with important legume soybean and peanut crops in china, following : 1 ) summarized bio - diversity of rhizobia, including indigeneous population, isolation frequency, strain type, distribution, and strain - host promiscuity and compatibility from large and small samples. 2 ) reviewed symbiont improvement in both sides of rhizobia and hosts, involving selection of effective rhizobial strains, evoluation and utilization of the host germplasm for symbiotic properties, and selection of the both sides for special characters. 3 ) discussed the subject on the rich symbiont germplasm resource in china and on further research being necessary to exploitation and utilization of the benificial germplasm
文摘:針對我國主要豆科作物大豆和花生的研究成果，並結合本身研究工作內容， （ 1 ）總結了與宿主共生的根瘤菌生物學多樣性，包括大、小樣本的土著根瘤菌群體數量、分離頻率、類型與分佈及其菌株宿主共生混交性與親和性； （ 2 ）評述了根瘤菌宿主植物共生體雙邊固氮改良，包括優良菌株的選育、宿主品種資源共生特性的評價與利用及特異性狀的選擇； （ 3 ）討論了我國這一類共生體資源的豐富性以及有必要進一步加大力度研究有益資源的開發和利用的問題。The results were following : ( l ) generally, all four indices showed the similar variation patterns in species diversity ; ( 2 ) generally speaking, the order of species diversity indices changed with the pattern : shrub layer tree layer herb layers ; ( 3 ) the species diversity of evergreen broadleaved forests was larger than that of warm conifer forests ; ( 4 ) the species diversity of forests in meizi lake area has been affected by human factors
結果表明： （ 1 ）梅子湖森林植被樣地物種多樣性測度的結果，上述4種指標總體上表現出相同的變化趨勢。門）總體看來， 14個樣地的物種多樣性指數在群落不同層次的變化規律為：灌木層喬木層草本層。 （ 3 ）不同植被類型的物種多樣性特徵是：常綠闊葉林暖性針葉林。Abstract : physical activity has been defined as " any bodily movement produced by skeletal muscles that results in energy expenditure ". it is strongly endorsed as a means of staying healthy and an important avenue for social contact. although in australia, some studies have been conducted into the levels of physical activity in some ethnic communities, there has been a tendency to adopt a homogeneous view of culturally and linguistically diverse ( cald ) people rather than an ethno - specific perspective that recognises differing cultural beliefs and practices between and across language groups. this paper reports on a study that aimed to explore the concepts of, and attitudes towards, physical activity among older hong kong chinese australians resident in nsw. this study involved individual in - depth interviews and the use of open - ended questions. a total of 22 informants was recruited for the study. the findings revealed that most informants did not have a clear idea about what was meant by the term physical activity. " physical activity " tended to be a confusing and complicated term to this group. in addition, attitudes towards physical activity among this group reflect their cultural and health beliefs in preventive health care. to increase the physical activity level among older hong kong chinese australians, culturally - specific health promotion strategies might be needed to tackle the misconception about and specific attitudes towards physical activity, as well as to match the holistic chinese oncept of health maintenance
文摘:身體活動指"由骨骼肌產生的體能消耗運動" ，是保持身體健康、增進社會交往的重要方式和途徑.在澳大利亞，雖然有研究調查民族群體身體活動的各個層面，但總體而言，多數研究更側重於民族群體的同質性，而忽視了其異質性.本研究探討在新南威爾士州居住的澳籍香港老年華人對身體活動的概念理解及對身體活動的態度.研究使用開放性問卷進行個體深度訪談，受訪者22人.研究發現，大多數受訪者不清楚"身體活動"這一術語的含義，對他們來說， "身體活動"是一個模糊的、復雜的術語.該群體對身體活動的態度反映了他們在預防性衛生保健方面的文化和健康觀念.顯然，提升澳籍香港老年華人的身體活動水平，需要一種基於文化特殊性的健康促進策略以解決對身體活動的誤解，同時也需要具體的身體活動態度與華人整體性保健觀念相匹配Physical activity has been defined as " any bodily movement produced by skeletal muscles that results in energy expenditure ". it is strongly endorsed as a means of staying healthy and an important avenue for social contact. although in australia, some studies have been conducted into the levels of physical activity in some ethnic communities, there has been a tendency to adopt a homogeneous view of culturally and linguistically diverse ( cald ) people rather than an ethno - specific perspective that recognises differing cultural beliefs and practices between and across language groups. this paper reports on a study that aimed to explore the concepts of, and attitudes towards, physical activity among older hong kong chinese australians resident in nsw. this study involved individual in - depth interviews and the use of open - ended questions. a total of 22 informants was recruited for the study. the findings revealed that most informants did not have a clear idea about what was meant by the term physical activity. " physical activity " tended to be a confusing and complicated term to this group. in addition, attitudes towards physical activity among this group reflect their cultural and health beliefs in preventive health care. to increase the physical activity level among older hong kong chinese australians, culturally - specific health promotion strategies might be needed to tackle the misconception about and specific attitudes towards physical activity, as well as to match the holistic chinese oncept of health maintenance
身體活動指"由骨骼肌產生的體能消耗運動" ，是保持身體健康、增進社會交往的重要方式和途徑.在澳大利亞，雖然有研究調查民族群體身體活動的各個層面，但總體而言，多數研究更側重於民族群體的同質性，而忽視了其異質性.本研究探討在新南威爾士州居住的澳籍香港老年華人對身體活動的概念理解及對身體活動的態度.研究使用開放性問卷進行個體深度訪談，受訪者22人.研究發現，大多數受訪者不清楚"身體活動"這一術語的含義，對他們來說， "身體活動"是一個模糊的、復雜的術語.該群體對身體活動的態度反映了他們在預防性衛生保健方面的文化和健康觀念.顯然，提升澳籍香港老年華人的身體活動水平，需要一種基於文化特殊性的健康促進策略以解決對身體活動的誤解，同時也需要具體的身體活動態度與華人整體性保健觀念相匹配3. based on the 2 x 2 contingency table, interspecific association among 17 common species forests of meizi lake area was examined by using various indices, the results are s as follows : ( 1 ) w - test indicated that positive correlations exist among the common populations ; ( 2 ) the most pairs of the populations in the forest communities in meizi lake area showed positive correlations
採用2x2列聯表，通過x 『一檢驗、 ac值、 pc值及點相關系數小值對在樣地中出現頻率較高的17個種群的種間聯結進行了定量分析，結果如下：門） w一檢驗表明，梅子湖森林植被樣地17個常見種群的總體種間關聯性里顯著正關聯。X2 test with 2 2 contingency table and ochiai indices were used to analyze the interspecific association of 12 dominant species of meadow community and 20 dominant species of scrub community and 18 dominant species of tree community. pearson ' s correlation coefficient and spearman ' s rank correlation coefficient were also applied to calculate correlations between species
在該地區植被的優勢種的種間關系的研究方面，運用2 2列聯表、 x ~ 2檢驗方法對群落優勢種進行總體相關性和種對間的聯結性檢驗，利用共同出現百分率jaccord指數測定種對間的關聯度，應用pearson相關系數和spearman秩相關系數刻畫種對間的數量變化關系。The main results are as following : 1 species diversity indices are significantly different among communities in desert - oasis ecotone, but are low in general ; diversity indices based on important value and cover are more properly in arid desert areas
主要結論如下： 1 、阜康荒漠綠洲過渡帶物種多樣性在群落間差異顯著，總體上多樣性水平較低；對荒漠植被，以重要值或蓋度為指標計測多樣性指數較為可行。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。Abstract : biological invasions are a continuous feature of a non - equilibrium world, ever more so as a result of accidental and deliberate introductions by mankind. while many of these introductions are apparently harmless, others have significant consequences for organisms native to the invaded range, and entire communities may be affected. here we provide a survey of common models of range expansion, and outline the consequences these models have for patterns in genetic diversity and population structure. we describe how patterns of genetic diversity at a range of markers can be used to infer invasion routes, and to reveal the roles of selection and drift in shaping population genetic patterns that accompany range expansion. we summarise a growing range of population genetic techniques that allow large changes in population size ( bottlenecks and population expansions ) to be inferred over a range of timescales. finally, we illustrate some of the approaches described using data for a suite of invasions by oak gallwasps ( hymenoptera, cynipidae, cynipini ) in europe. we show that over timescales ranging from 500 10000 years, allele frequency data for polymorphic allozymes reveal ( a ) a consistent loss of genetic diversity along invasion routes, confirming the role of glacial refugia as centres of genetic diversity over these timescales, and ( b ) that populations in the invaded range are more subdivided genetically than those in the native range of each species. this spatial variation in population structure may be the result of variation in the patchiness of resources exploited by gallwasps, particularly host oak plants
文摘:生物入侵是不均衡世界的一個永恆話題，尤其是當人類有意或無意地引入物種后.很多引入顯然是無害的，但另外一些則有著嚴重的後果，會給入侵地的生物以至於整個生物群落造成影響.本文總結了分佈區擴張的常見模式，概述了它們對遺傳多樣性和種群結構式樣所造成的影響.描述了如何根據以一批遺傳標記所得到的遺傳多樣性式樣來推斷入侵途徑，來揭示伴隨擴張選擇和漂變在形成種群遺傳樣式中的作用.本文對日益增多的群體遺傳學方法進行了總結，這些技術可以用來在不同的時間尺度上推斷種群規模所發生的巨大變化（瓶頸效應及種群擴張） .最後，我們以歐洲櫟癭蜂（膜翅目，癭蜂科，癭蜂族）一系列入侵的數據為例對一些方法進行了說明.從500 10000年的時間尺度上，多態的等位酶位點上等位基因頻率的數據表明: 1 ）遺傳多樣性沿入侵路線呈不斷下降的趨勢，支持了冰河期避難所作為遺傳多樣性中心的作用; 2 ）入侵地區的種群與該物種原產地的種群相比，遺傳上的分化更為強烈.這種種群結構在空間上的變異可能是被櫟癭蜂開發的資源尤其是櫟樹寄主在斑塊上出現變異的反映The vegetative status and the flowering and fruiting developmental rhythm of changnienia amoena were investigated in tiantangzhai population of anhui province during the flowering and fruiting period
摘要對安徽省天堂寨自然保護區獨花蘭野生種群的花果期節律和營養體狀態研究表明，開花植株占觀察樣本的37 . 5 % ，個體是否開花與假鱗莖數目、地下莖總體積和葉面積呈極顯著相關關系。Users analysis : 50 % of the end users are students from institutions and universities. 60 % of the end users are person who has requirement on education
用戶分析：高校學生為主要用戶群，佔用戶總數的50 ，有各種教育需求的人員是主流用戶群，佔用戶總數的60 。According to these specimens, a key of families, genera and species about the pleurocarpous mosses in hebei have been worked out, and some dissecting graphs have been pictured
96 ，這些優勢類群大都是溫帶性質的科、屬。本省該類群槍物包括中國特有種15種，占總種數的7Overall, between 2 and 10 percent of mammal populations ( groups of a single species in a specific geographical location ) are thought to have disappeared along with their habitat
總體估算，哺乳動物種群數目（一個特定地理區域內單一物種的群數）的2到10被認為已經和它們的生態環境一併消失。There are 596 species of livestock and poultry in china, of which over 70 percent are native species
中國有家畜禽品種、類群596個，其中土著家畜禽品種（類群）占品種總數的70以上。Among those species, the palaearctic species with 41 species recorded are dominant, accounting for 85. 42 % of the total species number of the region ; the endemic species with 2 species, accounting for a comparable small part ; the widly - distributed accounting for a relatively larger proportion, with 5 species and 10. 42 % of the total. the characteristics of the faunal construction not only reflect the adaptability of grasshopper himself to the circumstance around him but also are the appraisals and proofs of transportation about historical natural circumstances. this paper mainly aims at a - structure
從蝗蟲的區系地理成分來看，長白山地區共有48種蝗蟲構成了蝗蟲群落，它們隸屬於7科， 31屬；其中古北種佔有絕對優勢地位，計41種，占該區蝗蟲總數的85 . 42 ；東洋種所佔比例較小，只有2種，占總數的4 . 17 ；廣布種5種，占該區蝗蟲總數的10 . 42 ；特有種所佔比例較小，只有5種，占該區蝗蟲總數的10 . 42 。The plots within ski trails had relatively few birds over all and low species diversity ? a measure of both the number of species and the number of individuals in each species
被測定的項目有物種的個數和一個物種的種群數量，結果顯示，滑雪場中的鳥類總數和多樣性最低。The results show that 20 % metarhizium anisopliae oil has certain effects on controlling caged locusts, although it has no ideal total result on controlling the high definition locusts in short - term
結果表明： 20 %殺蝗綠僵菌油劑對籠罩內蝗蟲的防治具有一定的控製作用，但短期內對高密度蝗蟲種群數量的總體控制效果不理想。分享友人