齡級分佈 的英文怎麼說
中文拼音 [língjífēnbù]
齡級分佈
英文
age class distribution-
Through the investigation of the number of the cochineal female adults on different age of cladodes of cactus, the optimal age cladodes of cactus to the cochineal is analyzed
通過胭脂蟲在仙人掌各級莖片上分佈的調查，得出胭脂蟲培育的適宜年齡的仙人掌莖片。Purpose : to explore the risk factors for nosocomial infection of urological surgical department. method : 2 976 cases of urological surgical patients was investigated retrospectively for the nosocomial infective prevalence in urological surgical department from the april 1996 to april 1999. result : nosocomial ratio in urological surgical department was 4. 87 %, in which 73. 1 % for male and 26. 9 % for female. the infective sites are lower respiratory tract, surgical wound, urinary tract, gastrointestinal tract, upper respiratory tract and skin - soft tissues in turn, infection rates were 4. 38 %, 10. 4 %, 13. 6 %, 27. 6 %, 25. 5 %, 30. 3 %, 20. 8 %, 42. 6 % for clean wound, dirty wound, infection wound, artery catheter, venouse catheter, urinary tract catheter, respiratory tract, and general anesthesia respectively. conclusion : the nosocomial infection was not related to age, infection time and the usage of antibiotics ; but was closely related to gender, surgical sites, surgical wound type, invasive operation, the degree of tisk index and micropathogens
目的:探討泌尿外科醫院感染的危險因素.方法:回顧性調查1996年4月1999年4月間我院泌尿外科手術患者2976例的醫院感染情況.結果:泌尿外科醫院感染率為4 . 87 % ，其中男性佔73 . 1 % ，女性佔26 . 9 % ;感染部位依次為下呼吸道、手術傷口、泌尿道、胃腸道、上呼吸道、皮膚軟組織;類切口術后感染率為4 . 4 % ，類切口術后感染率為10 . 4 % ，類切口術后感染率為13 . 6 % ;動脈插管感染率為27 . 6 % ，靜脈插管感染率為25 . 5 % ，泌尿道插管感染率為30 . 3 % ，呼吸道感染率為20 . 8 % ，全麻感染率為42 . 6 % .結論:醫院感染與患者年齡、感染時間和抗菌藥物使用情況無關，與性別、部位分佈、手術切口類型、侵入性操作、危險指數等級及病原微生物有密切關系Abstract : purpose : to explore the risk factors for nosocomial infection of urological surgical department. method : 2 976 cases of urological surgical patients was investigated retrospectively for the nosocomial infective prevalence in urological surgical department from the april 1996 to april 1999. result : nosocomial ratio in urological surgical department was 4. 87 %, in which 73. 1 % for male and 26. 9 % for female. the infective sites are lower respiratory tract, surgical wound, urinary tract, gastrointestinal tract, upper respiratory tract and skin - soft tissues in turn, infection rates were 4. 38 %, 10. 4 %, 13. 6 %, 27. 6 %, 25. 5 %, 30. 3 %, 20. 8 %, 42. 6 % for clean wound, dirty wound, infection wound, artery catheter, venouse catheter, urinary tract catheter, respiratory tract, and general anesthesia respectively. conclusion : the nosocomial infection was not related to age, infection time and the usage of antibiotics ; but was closely related to gender, surgical sites, surgical wound type, invasive operation, the degree of tisk index and micropathogens
文摘:目的:探討泌尿外科醫院感染的危險因素.方法:回顧性調查1996年4月1999年4月間我院泌尿外科手術患者2976例的醫院感染情況.結果:泌尿外科醫院感染率為4 . 87 % ，其中男性佔73 . 1 % ，女性佔26 . 9 % ;感染部位依次為下呼吸道、手術傷口、泌尿道、胃腸道、上呼吸道、皮膚軟組織;類切口術后感染率為4 . 4 % ，類切口術后感染率為10 . 4 % ，類切口術后感染率為13 . 6 % ;動脈插管感染率為27 . 6 % ，靜脈插管感染率為25 . 5 % ，泌尿道插管感染率為30 . 3 % ，呼吸道感染率為20 . 8 % ，全麻感染率為42 . 6 % .結論:醫院感染與患者年齡、感染時間和抗菌藥物使用情況無關，與性別、部位分佈、手術切口類型、侵入性操作、危險指數等級及病原微生物有密切關系Niche breadth of four dominate populations at three age groups was studied by the methods of resource utilization ability and ratio. the result shows that : symplocos sectchuanensis is a typical gengeration species whi ch resource utilization ability is strong, and distribution is wide. meanwhile, go rdonia acuminata, castanopsis fargesis and pinus massoniana specialized at some d egree in resource utilizationm, their distribution is limited. especially, the ju venile of pinus massoniana specialized outstandingly. with the devlopment of pinu s massoniana, which is the pioneer population in mt. jinyun, the environment become s unfit to it ' s juvenile. it turns to needle and evergreen broad - leaves mixed fo r est. because the tolerance toward shading of gordonia acuminata is lower than tha t of castanopsis fargesis, gordonia acuminata will be substituted by castanopsis fargesis and other evergreen broad - leaves species are the edificators. the popul ation ' s ability of resource utilization is the inner factor of population distri bution and community succession. the distribution of light and the concentrate of nutrient ( such as n ) is the outer factors of community succession
對縉雲山森林植被的4個優勢種群3個年齡級生態位寬度進行了研究.結果表明，川灰木利用資源的能力最強、分佈廣，為典型的泛化種.大頭茶、栲樹、馬尾松對資源的利用在一定程度上特化，分佈上有一定的局限性.馬尾松的中齡組與幼齡組特化現象十分顯著.縉雲山森林植被的先鋒種馬尾松的發展，導致環境的改變不適于其幼齡個體的生長，群落演替到針闊葉混交林階段，最後發展為以栲樹等為建群種的常綠闊葉林.種群的資源利用能力，是種群分佈與群落演替的內在原因，光因子和營養元素（如n ）是群落演替的主要外部動力On the loess plateau, water is the main limiting factors for vegetation growth. root distribution characters have special ecological meaning as it reflected the utilizations of trees to the environments. even - aged stands of robinia pseudoacacia on slope lands facing south and north were selected as sampling plots for root distribution investigation. investigatiing results showed that indicated that on all sites, root biomass decreased with depth, and the distribution depth of fine root was deeper than that of coarser root. the results of variance analysis indicated that there were great differences in root biomass among different diameter classes, and coarser root was the main sources of variance, and the root biomass, especially fine root ( < 3mm ) biomass on northern exposition sites was bigger than that on southern exposition sites. analysis of the vertical root distribution parameters, root extinction coefficient, indicated that the value of on northern exposition was more than 0. 982, while the value of on southern exposition was less than 0. 982, which indicated that the vertical root distribution depth of robinia pseudoacacia on southern exposition was deeper than that on southern exposition. and the distribution depth of fine roots ( < 1mm ) was deeper than that of thicker roots ( < 3mm ), which was in favor of the uptake of water and nutrients from deeper layers, helped the trees to adapt the arid environment, and promoted the growth of the upper parts of the tree
在中國西北黃土高原地區，水分是樹木生長發育的主要限制因子.根系分佈特徵由於反映了樹木對環境條件的利用程度而具有更加特殊的生態意義.本研究選擇陽坡和陰坡不同立地上年齡一致的刺槐林調查了根系分佈特徵.根系垂直分佈特徵的調查結果表明，在所有立地上，根系生物量隨著深度的增加而降低，其中細根的分佈深度大於粗根的分佈深度.方差分析結果表明:不同立地上不同徑級根系的分佈特徵也有明顯的差別，粗根是差異存在的主要原因，陰坡立地上的根系生物量，特別是細根生物量大於陽坡立地上的.對根系消弱系數的分析結果表明，陰坡立地上的根系消弱系數大於0 . 982 ，而陽坡立地上的根系消弱系數小於0 . 982 ，說明陰坡立地上刺槐根系的生物量在深層土壤中的分佈相對量更大一些.其中細根的根系消弱系數大於粗根的，這種根系分佈特徵有利於根系對深層土壤水分養分的吸收利用，進而促進樹木地上部分的生長發育.圖3表3參15Abstract : on the loess plateau, water is the main limiting factors for vegetation growth. root distribution characters have special ecological meaning as it reflected the utilizations of trees to the environments. even - aged stands of robinia pseudoacacia on slope lands facing south and north were selected as sampling plots for root distribution investigation. investigatiing results showed that indicated that on all sites, root biomass decreased with depth, and the distribution depth of fine root was deeper than that of coarser root. the results of variance analysis indicated that there were great differences in root biomass among different diameter classes, and coarser root was the main sources of variance, and the root biomass, especially fine root ( < 3mm ) biomass on northern exposition sites was bigger than that on southern exposition sites. analysis of the vertical root distribution parameters, root extinction coefficient, indicated that the value of on northern exposition was more than 0. 982, while the value of on southern exposition was less than 0. 982, which indicated that the vertical root distribution depth of robinia pseudoacacia on southern exposition was deeper than that on southern exposition. and the distribution depth of fine roots ( < 1mm ) was deeper than that of thicker roots ( < 3mm ), which was in favor of the uptake of water and nutrients from deeper layers, helped the trees to adapt the arid environment, and promoted the growth of the upper parts of the tree
文摘:在中國西北黃土高原地區，水分是樹木生長發育的主要限制因子.根系分佈特徵由於反映了樹木對環境條件的利用程度而具有更加特殊的生態意義.本研究選擇陽坡和陰坡不同立地上年齡一致的刺槐林調查了根系分佈特徵.根系垂直分佈特徵的調查結果表明，在所有立地上，根系生物量隨著深度的增加而降低，其中細根的分佈深度大於粗根的分佈深度.方差分析結果表明:不同立地上不同徑級根系的分佈特徵也有明顯的差別，粗根是差異存在的主要原因，陰坡立地上的根系生物量，特別是細根生物量大於陽坡立地上的.對根系消弱系數的分析結果表明，陰坡立地上的根系消弱系數大於0 . 982 ，而陽坡立地上的根系消弱系數小於0 . 982 ，說明陰坡立地上刺槐根系的生物量在深層土壤中的分佈相對量更大一些.其中細根的根系消弱系數大於粗根的，這種根系分佈特徵有利於根系對深層土壤水分養分的吸收利用，進而促進樹木地上部分的生長發育.圖3表3參15分享友人