樺原 的英文怎麼說

Based on the principle of significant effect of soil fertility factors on forest growth, soil physical factors ( natural water content, bulk density, total porosity, capillary porosity, aggregate degree, coarse silt and physical clay ), chemical factors ( om. total n, alkali - hytrolyzable n, total p, humus and ha / fa ) and biological factors ( urease, acidphosphotase, invertase and microbes ) were selected as evaluation index system of soil fertility. applying principal component analysis, soil ifi of subalpine coniferous forest was calculated

從土壤物理、化學、生物學三方面出發，建立了川西亞高山針葉林不同演替階段土壤肥力評價指標體系，應用主成分分析，計算出不同演替階段土壤肥力綜合指標值（ ifi ） ，各演替階段大小順序為： 10年生雲杉林地跡地原始林地次生樺木林地30年生雲杉林地20年生雲杉林地50年生雲杉林地60年生雲杉林地40年生雲杉林地。

The recombinants were constructed by transforming ppic9 a - xynb into p. pastoris gs115. the assay results revealed that the xylanase gene xynb was overexpressed and secreted effectually in p. pastoris. in 3l fermentor the expression level of xylanase xynba exceeded 1200iu / ml and the expressed xylanase had normal bioactivity. the molecule weight of xynba was determined as about 31kd which is higher than 23kd of original enzyme xynb from streptomyces olivaceoviridis a1. xynbb was gotten by deglycasylation of xynba, whose molecule weight returned to 23kd. we comparised the enzymatic properties of xynba expressed in p. pastoris, xynbb deglycasylated from xynba and xynb produced from streptomyces olivaceoviridis al : there was little difference among the three enzymes on optimal ph, the optimal ph of xynb and xynba were both 5. 2, the optimal ph of xynbb was 5. 0 ; the optimal temperature of xynb and xynba were both 60 c, while the optimal temperature of xynbb was 50 ? ; because of glycosylation the thermal stability of xynba was better than xynb and xynbb ; the specific activity of xynba and xynbb were 883. 88iu / mg and 832. 5hu / mg respectively, which were both lower than 2814. 45iu / mg of xynb ; the km values of xynb and xynba were similar to each other which were 21. 56 ( g / kg ) and 20. 87 ( g / kg ), while the km value of xynbb was 27. 10 ( g / kg ) ; the fmax of xynba and xynbb were 4568umol / mg. min and 5329umol / mg. min respectively which were lower than 27623 umol / mg. min of xynb ; additionally all of the three enzymes did not display cellulase activity. they all had well resistance to pepsion and trypsin, and were not sensitive to metal iron, surface active agent and chelating agent. the analysis of different xylans enzymatic hydrolysate revealed : by xynba, that the main constitutions of enzymatic hydrolysate of birch wood xylans were xylotriose and xyloquaiose, which account for 68. 43 % and 16. 50 % respectively, additionally there was 11. 79 % of xylobiose ; the main constitutions of enzymatic hydrolysate of corncobs xylans were xylobiose and xylotriose, which account for 81. 78 % and 11. 55 %. the result indicated that this xylanase was a kind of 1, 4 - b - d - xylanohydrolase and was fit to used in industrial procession of xylooligosacc harides

進一步對xynba進行了脫糖基化處理得到xynbb ，其分子量恢復到23kd ，證明xynba是糖基化蛋白。通過對畢赤酵母重組表達的木聚糖酶xynba 、脫糖基化的木聚糖酶xynbb以及橄欖綠鏈黴菌a1所產原酶xynb之間酶學性質的比較發現：三種酶的最適ph差異不大， xynb和xynba均為5 . 2 ， xynbb為5 . 0 ； xynb和xynba的最適溫度均為60 ， xynbb降為50 ：在耐熱性上， xynba由於糖基化作用熱穩定性明顯高於未糖基化的xynb和xynbb ； xynba和xynbb的比活性分別為883 . 88iu mg和832 . 51iu mg ，明顯低於原酶的比活2814 . 45iu mg ； xynb和xynba的km值相當，分別為21 . 56 （ g kg ）和20 . 87 （ g kg ） ，而xynbb的km值較大為27 . 10 （ g kg ） ； xynba和xynbb的vmax相差不大，分別為4568 mol mg ? min和5329 mol mg ? min ，明顯低於xynb的27623 mol mg ? min此外三種酶均無纖維素酶活性，對胃蛋白酶和胰蛋白酶有很好的抗性，且對作用環境中的各種離子、表面活性劑、螯合劑不敏感。通過對不同木聚糖的酶解產物的糖份分析發現：以樺木木聚糖為底物時，酶解產物主要為木三糖和木四糖，含量分別為68 . 43和16 . 50 ，另外還含有11 . 79的木二糖；以玉米芯木聚糖為底物時，酶解產物主要為木二糖和木三糖，含量分別為81 . 78和11 . 55 。

The reality wood flat floor takes wood assortments such as birch, oak wood, elm, color wood as raw material

實木平板地板以樺木、柞木、榆木、色木等材種為原材料。

This article is based on rural debts as research object that proceeds analyses and researches for chinese rural debts in both sides of theory and practice, which not only elaborate chinese rural debts in current stage and analyze the reason with more profound levels for the formation of rural debts, but also probe into the approaches and thoughts for resolving the problems of rural debts

本文以鄉村債務為研究對象，以吉林省樺甸市常山鎮為個案，從理論與實踐兩方面對中國鄉村債務進行了分析和研究，闡述了現階段中國鄉村負債的現狀和危害，分析了鄉村債務形成的深層次原因，探討了解決鄉村負債問題的途徑和思路。

Tianwei wood industry company has competely adopted advanced equipment and machinery of china and estalished strict quality control and management systeml. the " rose " brand series products of birch board. veneer and construction laminated board produced by this company with its advancd and precise equipment and testing devices are excellent in quality and wide in application. along wide in application, along with its continuous development, the company has put larger investments in quality control and technologies of producion so that its all kinds of products have won huge potentials to occupy the markets an have been well received by all the customers

天威木業公司全部採用國內先進的機器設備，建立嚴格的質量管理體系；應用精密的儀器檢測生產的「玫瑰」牌系列楊、樺木，膠合板及高檔建築覆膜板，質量上承，用途廣泛，隨著公司的不斷發展，對板材質量，科技加大了投入，為各類產品贏得市場，搶占商機創造了巨大的潛力，得到了廣大消費者的厚愛，產品原暢銷于廣州、重慶、北京、上海、及全國個大城市，自2002年以來已經全部實現出口日本、韓國、中東及歐美等國家和地區，取得了世界各國廣泛的贊譽和認可。

Although the original forests have been cleared over most of the country, remnants of the old natural forest in the killarney area indicate that oak interspersed with holly and birch predominated, with ash, hazel and yew forests occurring in limestone areas

原始森林曾經蓋滿愛爾蘭的很多地方而現在留存在killarney地區的古老的自然森林可以顯示出樺樹占領了主要的地位，而橡樹和冬青樹只是點綴其中。岑樹、榛樹和紫杉樹生長在石灰石地區。

The paper studies composition of grasshopper community in different habitats, found that differences in family, genus and species and analyzed the causes of those. the author analyzed the following aspects by spss software and the measure of euclidean distance : ( 1 ) analyzed the relationship between grasshopper species and geographical distribution and divided 9 forestry belt into 3 main habitat model : low mountain conifer and broadleaf integrated forestry belt ; low mountain chanbai conifer forestry belt and middle - high conifer - betula ermam / - tundra belt ; adopted sum of deviation of square to clustered ecological species groups, and thus divided 48 grasshopper species into 3 main category, 12 ecological species groups

在長白山地區蝗蟲生態分佈特點的研究中，主要應用spss軟體包、採用euclideandistance測度法對以下兩方面內容進行了分析： （ 1 ）對長白山地區蝗蟲地理分佈關系進行了分析，將長白山9個林帶劃分為三大生境型：低山針闊葉混交林帶、低山長白松林帶和中高山針葉?岳樺?苔原復合體； （ 2 ）利用離差平方和法對生態種組進行等級聚類，結合實地調查結果，將48種蝗蟲劃分為三大類12個生態種組。

Rainfall redistribution in virgin pinus koaiensis forest and secondary betual platyphylla forest in northeast china

原始紅松林和次生白樺林降雨截留分配效應研究

Study on cohort structure of betula platyphylla population in virgin forest, northern region of daxing ' anling mountains, china

大興安嶺北部地區原始林白樺種群的世代結構