種群數量 的英文怎麼說

中文拼音 [zhǒngqúnshǔliáng]
種群數量 英文
population number
  • 種 : 種名詞（姓氏） a surname
  • 群 : Ⅰ名詞（聚在一起的人或物） crowd; group Ⅱ量詞（用於成群的人或物） group; herd; flock
  • 數 : 數副詞（屢次） frequently; repeatedly
  • 量 : 量動1. （度量） measure 2. （估量） estimate; size up
  • 數量 : quantity; quantum; amount; magnitude; number
  1. 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。
  2. Amount and spatial dynamics of population of bemisia tabaci hemiptera : aleyrodidae in different host plants

    不同寄主植物煙粉虱種群數量消長及空間動態變化研究
  3. Previous researchers have always determined the sp atial distribution patterns ( sdp ) of castanopsis kawakamii with a sample - dis tance method. however, the distribution patterns may be affected by the quadrat si ze and, in the course of analysis, the density differences among the cluster plots are not considered ; therefore, differences of cluster plot size and the dispersi on degree among individuals of cluster plots can not be known. authers of this pa per have determined the spatial distribution patterns of castanopsis kawakamii population in different habitats by means of non - quadrat distance method and a nalysed the pattern intensity and grain of the sdp. the pattern intensity is defi ned with the relative density differences and the pattern grain can embody the d ispersion degree of the individuals in the plots, and the dispersion degree among the plots. the determined results are as follows. the intensities of the species range in order from strong to week : litsea mollifolia p. kawakamii i. purpure a r. cochinchinensis c. kawakamii c. carlessii d. oldphamii s. superba. the gra ins of the species queue in order from coarse to close : s. superba = litsea mollif olia r. cohinchinensis c. kawakamii = i. purpurea c. carlessii p. racemosam d. oldp hamii. these determined results tally basiclly with the results authers of this paper have got in determining the same plots by means of aggregate index access ing method. in view of this, it is held that the sdp of c. kawakamii is closely related to the habitats and biological features

    前人都是採用樣方方法對格氏栲種群數量的空間格局進行測定，而格局分佈有可能受樣方大小的影響，且分析過程中沒有涉及聚塊間密度差的問題，因而無法掌握種群的聚塊大小差別及聚塊內個體間的離散程度.本研究採用無樣方距離法，測定不同生境的格氏栲種群空間格局，分析格氏栲種群格局的強度和紋理.強度以聚塊和間隙的密度差來定義，紋理則是體現聚塊內個體間的離散程度與諸聚塊間的分離程度.測定結果表明，格氏栲種群格局強度從高到低排列次序為：木姜子蚊母樹冬青茜草樹格氏栲米櫧虎皮楠木荷；格局紋理從粗到細的順序是：木荷=木姜子茜草樹格氏栲=冬青米櫧蚊母樹虎皮楠.這一測定結果與作者採用聚集度指標測定相同樣地格氏栲種群空間格局的結果基本相符.因此，格氏栲空間格局類型及分佈與格氏栲生物學特性及生境的關系密切
  4. Studies on field population dynamics of aceria litchii keifer

    荔枝瘤癭蟎田間種群數量動態研究
  5. Prediction of the natural population dynamics of spodoptera litura fabricius

    斜紋夜蛾自然種群數量動態預測研究
  6. From the aspects of agricultural economic and environmental ecological effects, were the effects and mechanism of rare - earth micro - fertilizer to improve the growth, development, quality and yield of the crops ; the adjustment of crops growth by influencing the number of microbial population in soil district and the function of the soil dehydrase, alkaline phosphatase, urease and sucrase ; the ecophysiological effects of alleviating the injure of acid rain, ultraviolet radiation, heavy metal on crops were illustrated ; the sureness of bee ' s use in agricultural was provided, according to the rule of the distribution and enrichment of be in crops

    摘要從農業經濟效應和環境生態效應二方面，論述了稀土肥料促進作物生長、發育，提高作物產量，改善作物品質的效應與機理；影響土壤區系中微生物種群數量和土壤脫氫酶、堿性磷酸酶、脲酶及蔗糖酶的功能，繼而反饋調節作物生長；緩解酸雨、紫外輻射和重金屬傷害作物的生態生理學效應；並以稀土在作物體內分佈與富集規律為參考，探討了稀土農用的安全性。
  7. Identifiability, filtration and biologic characteristics observation of three fly species in harbin of china were narrated, and it was evaluated to these fly species " larva and imago nutrition in this paper. studies results showed that lucilia sericata meigen, aldrichina grahami aldrich and parasarcophaga crassipalpis macquart are excellent fly species in population. the excellent fly species have regular succession phenomenon as seasonal and temporal changement

    室內、室外試驗觀察發現，絲光綠蠅（ luciliasericatameigen ） 、巨尾阿麗蠅（ aldrichinagrahamialdrich ）和肥須亞麻蠅（ parasarcophagacrassipalpismacquart ）在種群數量上具有優勢，並隨季節時間變化，其幼蟲種類具規則的演替現象。
  8. Centropages tenuiremis is a mainly dominant species in xiamen waters during winter - spring. there is a noticeable character in its life history, that in may and june, when the population of this species begin to reduce gradually, the females could produce diapause eggs with long spines on their surface to over summer - autumn ( from july to november )

    瘦尾胸刺水蚤（ centropagestenuiremisthompsen & seott ， 1903 ）是廈門海區冬春季節的主要優勢種，其生活史中一個顯著的特點就是在種群數量逐漸減少的5 6月間，雌體會產出表面遍布長刺的滯育卵，以滯育形式度過不利其生長繁殖的夏秋季（ 7 11月） 。
  9. The population quantity of lithocolletis ringoniella mats, made up the absolute predominance from the middle ten days of july to the beginning of august and the population quantity of aphis citricola van der goot made up the absolute predominance from the last ten days of april to the beginn ing of june

    山楂紅蜘蛛種群數量在3月中旬4月中旬占絕對優勢，金紋細蛾種群數量在7月中旬8初占絕對優勢，繡線菊蚜種群數量在4月下旬6月初占絕對優勢。
  10. The crash reduces the population size toward the original level.

    隨著暴跌，導致種群數量回到它的初始水平。
  11. The results indicated that it was easy, feasible and practical to forecast the dynamics of the adult population with the method

    結果表明：應用此方法監測馬毛松毛蟲種群數量動態的變化，簡單、實用、可行。
  12. This a nimal could not be found in the branches flowing into dongting lake now

    長江江豚在洞庭湖的分佈范圍主要集中在從城陵磯到鯰魚口一帶，其種群數量大致為100 150頭。
  13. Advances on timing dynamics research on clonal plant population

    毛烏素沙地中國沙棘種群數量動態研究
  14. Longgang nature reserve plays an important role in preserving two langur species of both white - headed langur and francois langur. interview and field survey methods were used to survey the distribution and population size of these two langurs in this natural reserve from december 2001 to january 2002. the result indicated that the reserve has 8 groups of white - headed langur with 68 individuals in longrui and 10 groups of francois langur with 75 individuals in longgang. the distribution area and population size of both of the two langurs in this reserve have greatly declined in the past decades. they are seriously threatened and have high risk of disappearance from this reserve if no effective measures are to be taken at once

    為了確定弄崗自然保護區內白頭葉猴的種群數量，彌補黑葉猴種群數量的空白，掌握此保護區葉猴的生存現狀，採用訪問法和實地數量統計法相結合的方法對弄崗自然保護區的弄崗、隴瑞和弄呼3個部分進行深入的調查研究.調查結果表明，在隴瑞片范圍內，共有8群白頭葉猴，種群大小在68隻左右，和20世紀80年代末的244隻相比，數量下降相當驚人;在弄崗片內，共記錄到黑葉猴群10群，最大的種群為11隻個體，最小的種群是4隻個體，共計約有75隻黑葉猴（絕對數量統計） ;弄呼的黑葉猴種群已經于上個世紀的晚期消失.造成目前狀況的因素主要是過度狩獵和其他形式的過度干擾.弄崗自然保護區的葉猴種群數量已經接近可持續繁殖種群的最低水平，如不採取有效的保護措施，這個種群將很可能在短期內消失
  15. The vegetation type have a definite effect on their growing and breeding

    兩地區的植被變化對陸生貝類的物種和種群數量分佈有一定影響。
  16. The species are the furthest abundant in mixed forest of evergreen broad leaf and deciduous broad leaf in middle altitude region ( from 500m to 1, 200m ) in two areas, followed by the mixed forest of coniferous leaf and broad leaf in middle altitude region ( from 1, 200m to 1, 600m ) of mangshan and the evergreen broad leaf forest in low altitude region ( under 500m ) of babaoshan. the biomass of the mollusca community is much bigger than any other areas and the superior species are quite apparent in low altitude region. the terrestrial mollusca are not discovered in high altitude region ( from 1, 600 to 1, 900 ) so far

    中海拔區（ 500 1 ， 200m ）的常綠闊葉與落葉闊葉混交林帶陸生貝類物種最為豐富；次豐富的為莽山中海拔區（ 1 ， 200 1 ， 600m ）的針闊混交林帶和八寶山低海拔區（ 500m以下）的常綠闊葉林帶；低海拔區（ 500m以下）的常綠闊葉林帶陸生貝類的種群數量大，優勢種明顯；高海拔區（ 1 ， 600一1 ， 900m ）未發現陸生貝類。
  17. The number of mixed species population is twice as many as single species population

    4隻左右。混合群的數量是單種群數量的2倍。
  18. In effect, " no net loss of biodiversity in hong kong " means important sites are protected for perpetuity and viable populations of species are sustained in hong kong

    事實上，本港生物多樣性零凈損失表示永久保護本港的重要生境，並維持本地生物品種的種群數量于可繁殖水平。
  19. Population size and protection countermeasures of silver pheasant at maolan national nature reserve, guizhou province

    貴州茂蘭自然保護區白鷴種群數量與保護對策
  20. We get the probability distribution of the population by the theory and method of markovian process, and discuss the model coefficients influencing on subsistence of a population

    利用馬爾可夫過程的理論和方法，得到生物種群數量變化的概率分佈，最後討論了各模型參數的變化對生物種群生存的影響。
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