林分演進 的英文怎麼說

中文拼音 [līnfēnyǎnjìn]
林分演進 英文
stand development
  • 林 : 名詞1 （成片的樹木或竹子） forest; woods; grove 2 （聚集在一起的同類的人或事物） circles; group 3...
  • 分 : 分Ⅰ名詞1. （成分） component 2. （職責和權利的限度） what is within one's duty or rights Ⅱ同 「份」Ⅲ動詞[書面語] （料想） judge
  • 演 : 動詞1 （演變; 演化） develop; evolve 2 （發揮） deduce; elaborate 3 （依照程式練習或計算） drill;...
  • 進 : 進構詞成分。
  • 林分 : [林學] standing forest; stand; crop; forest stand林分測定 inventory of stand; 林分改造 stand conversion
  • 演進 : gradual progress; evolution
  1. Vegetation dynamics and soil characteristics of different period abandoned land was conducted in typical steppe at xilinguole league and meadow steppe at hulunbeier league, inner mongolia. the results showed : the function community of annual plants, perennial rhizornatous grasses and perennial rosette grasses were appeared at different succession stage of abandoned land in typical steppe and meadow steppe

    本試驗分別在內蒙古錫林郭勒盟典型草原帶和呼倫貝爾盟草甸草原帶對不同撂荒年限的撂荒地植被動態及土壤特性進行了研究，目的是探討草原區撂荒地植被演替的規律，為撂荒地植被的重建提供理論依據。
  2. The main research work in the thesis is as follows : ( 1 ) base on the analysis of cutting principle and tooth geometry characteristics of klingelnberg cycloid bevel gear, the formula of tooth design calculation was verified and the equation of imaginary crown gear tooth flank was deduced by establishing appropriate coordinate system

    主要研究工作和成果有: （ 1 ）通過分析克林貝格擺線錐齒輪銑齒原理，對其部分幾何設計演算法進行了推導驗證，並建立了適當的坐標系推導了假想冠輪的齒面方程。
  3. After studying a great many of historic materials, books and unearthed relics, he summarize the sani culture in yunnan as ah shi - ma culture. he points out that the traditional sani culture comprises four types, namely the hill culture represented by mizhi woods and mizhi festival, the fire culture by fire pray and torch festival, stone culture by stone worship and zulin - bimo ( priests ) culture. the author comprehensively explains the four psychological features deposit in the traditional sani culture, that is the rational tragedy consciousness, the ideal of searching for utopian home ah zhuo - di, the wise lifestyle rooted from migration and creativity, the open mind to face nonnative culture

    在這一認識基礎上，本論文以雲南石林彝族自治縣彝族撒尼支系的文化為例，分析和研究了撒尼人的歷史以及撒尼傳統文化形成過程，通過翔實的史料、文獻、地下文物以及文化在時代中的演變狀況，將雲南石林撒尼文化概括為石林阿詩瑪文化，並對該文化積淀中的諸多方面進行了認真的考察和分析，總結出石林撒尼傳統文化所包含的四大主要類型，即山文化（密枝林和密枝節） 、石文化（石崇拜） 、火文化（祭火和火把節）祖靈與畢摩文化，概括說明了石林撒尼傳統文化深蘊著的四大民族心理特徵，即基於理性基礎上的悲劇意識、執著于理想家園「阿著底」的理想模式、源於歷史遷徙和生活創造的智慧人生和面對外來文化時的開放心靈。
  4. Based on historic radiosonde data of changchun city, jilin province and xian city. shanxi province and on the typical model of profiles of cloud liquid water content for stratiformis, the coefficients of retrieval equation are obtained as the functions of height for each month from april to july in the two cities. furthermore, we explore the internal physics signification of retrieval coefficients ' distributing according to every month and have comparisons between the two cities. then the numerical simulation tests of the accuracy of retrieval results are given : the statistical relative deviation of retrieved values of l to the simulated " trues " on the ground is 15 - 25 % and that at altitude of 6km is 5 - 10 %, that means the retrieval method and implementation of the method are applicable to processing measurements of an airborne radiometer made in china recently

    本文介紹機載對空微波輻射計探測雲中路徑積分液態水含量（ l ）的輻射傳輸原理和反演方法；根據吉林省長春市和陜西省西安市的歷史探空資料和典型的層狀雲液水垂直分佈模式，得到這兩個地區4 - 7月各月的隨高度而變的反演公式及其系數的表達式；探索了和反演系數有關系的大氣的影響，並在各個月份之間進行了比較分析；給出了反演誤差的數值模擬檢驗結果：在地面反演值對『真值』的統計相對偏差是15 - 25 ，在6公里高度處為5 - 10 ，表明該方法已具有實用可接受的精度。
  5. Culture solution of hydrodictyon reticulatum has been separated with membrance of 0. 2um, 0. 45um, and then microalgae is cultured with the separated solution. the results show that the mechanism that hydrodictyon reticulatum restrains microalgae is closely related to the chemical interference to microalgae from biometabolism of hydrodictyon reticulatum besides their resource competition. we also find that there are two main functional substances in permeated solution with membrance of 0. 45um, one substance is beneficial to other algae, the other can restrain growth of algae

    水體富營養化藻類資源竟爭與種群演替規律的初探中文提要通過用0 . 20以m ， 0 . 45林m膜對水網藻培養液的分離，再分別用分離液來馴化、培養微藻，結果發現，水網藻對微藻的抑制機理除與之進行資源競爭外，還與水網藻的生物代謝物對微藻的化學干預作用密切有關。
  6. 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
  7. The vegetation types are described of baishanzu national nature reserve in qingyuan county, zhejiang province. the surveyed area covered25thousand hm 2 in which27sample plots with20m 20m each were selected. based on the importance value of plant species, six vegetation types were devided, viz. evergreen broadleaved forest, evergreen and deciduous broadleaved mixed forest, coniferous and broadleaved mixed forest, coniferous forest, mountain dwarf forest, and mountain shrub and herbosa. floristic composition, community structure, and trend of community succession of each vegetation type are described

    對近20年來多次調查的資料進行系統整理，將百山祖植被主要劃分成6個植被類型:常綠闊葉林、常綠落葉闊葉混交林、針闊葉混交林、針葉林、山地矮林和山地灌草叢，其下可分為22個群系;同時對群落的種類組成、結構和演替趨勢作了概述。
  8. Meanwhile, most aspects about this perspective are concerned, which include quantification of the soil water background of the plateau area, the regional spatial variation of soil water background and variation along the slope, mosaic structure and seasonal changes etc. the results show that : ( 1 ) for the fundamental circumstance for vegetation development is the original debilitated slope, so the perspective of soil water background specially for the loess plateau refers to the soil water conditions on the original slope. ( 2 ) the value of soil water background appears to be a descending trend from south to north based on the difference of vegetation zones. in the forest zone, soil moisture contents beneath 3m depth from the soil surface are more than 12 % usually ; in the forest - pasture zone, the values of soil moisture content beneath 4m depth underground are more than 6 % and stable, and tend to be ascending while the depth increases ; but the values in the dry pasture zone is lingering between 4 % to 6 % from the surface layer to sub - layers

    發展了「土壤水分背景」的概念，並以之為基礎對其各個方面進行了研究，使之形成一個相對獨立和完整的體系，主要包括黃土高原土壤水分的背景值、土壤水分背景的區域分異、坡面分異、鑲嵌結構及其季節分異等： （ 1 ）由於植被生長發展、演替的基礎階段是天然草被群落，故認為黃土高原的土壤水分背景在概念上是特指該區天然草被群落下的土壤水分狀況； （ 2 ）黃土高原的土壤水分背景值，根據植被地帶的不同表現出自南向北逐漸降低的規律：森林地帶3米以下土層水分背景值普遍穩定地高於12 ，森林草原地帶4米以下土層水分背景值穩定大於6 ，且均隨土層的加深水分含量逐漸增加，而草原帶的土壤水分背景值自土表至底土層一直在4 6之間徘徊。
  9. Landforms, soil, climate and characteristics of distribution in time and space in ningxia of draughts, disasters caused by wind and sand, floods and waterlodgging caused by hail, frost injury and earthquakes. the eighth chapter is on the relationships of environmental changing and the development of the agriculture and livestock husbandry in ningxia autonomous region which covers two sections : namely the historical processes of the human activities and the changing of the forests in ningxia, and the human activities and spreading of the deserts. the ninth chapter is a chapter that studies the regional divergence of the productivity level and the experiences and lessons of the development of agriculture and livestock husbandry

    下篇是寧夏農牧業發展等因素與環境變遷的關系，這又包括三章：第七章是農牧業發展的自然條件，即地貌、土壤、氣候，以及歷史時期寧夏旱災、風沙災害、水澇災害、雹災、霜凍災害、地震災害的時空分佈特徵；第八章是寧夏農牧業發展等因素與環境變遷的關系，這包括人類活動與寧夏森林的變遷、人類活動與寧夏土地沙漠化的歷史演進兩部分；第九章是寧夏南、北農牧業生產力水平的地區差異及農牧業開發的經驗教訓。
  10. This paper is based on the urban ecological principle and method, by analyzing and studying many key elements of the economic, social and ecological factors in beijing, explores the connection between the urban development and garden green land increased in beijing, summarize the development laws of the garden green land. this paper worked out, development of the garden green land in beijing dependence on upgrading of the industrial structure, afforestation invest, average gdp, policy, olympic games and their own ecological functions, etc. the remarkable change has taken place in the quantity and pattern of the garden green land in beijing. through analysizing the data in 1995 and 2000, the garden green land rose from 16577ha up to 21151ha, increased by 27. 6 %, urban green coverage rate rose from 32. 68 % up to 36. 34 %. especially, it developed rapidly in the public green land and the urban islolated green land, increased by 35. 6 % and 62. 3 % separately, and they have become the main components of garden green land in beij ing

    本文以城市生態學的原理和方法為基礎，通過對北京的經濟、社會和生態因素內諸要素進行分析和研究，探索其與北京城市園林綠地發展之間的聯系，總結城市園林綠地的演變規律。本文研究得出，北京市園林綠地的發展與產業結構的升級、園林綠化投資、人均gdp 、政策、奧運會及其自身的生態功能等呈正相關性。北京城市園林綠地的數量和格局也發生了顯著變化，從1995年和2000年的數據分析，北京城市園林綠地由16577ha上升到21151ha ，增長了27 . 6 ，城市綠化覆蓋率由32 . 68上升到36 . 34 。
  11. In the terms of the value of cultural heritage, based on the preservation theory of the current national cultural heritage, the value of xi ' an forest of steles cultural heritage is re - estimated and reanalyzed, and viewpoints and suggestions are proposed on the contents ^ methods > working points and key problems of the current preservation of xi ' an forest of steles, by dating the history development process of xi ' an forest of steles, by reviewing its preservation process and by investigating the current preservation

    本文以碑林及其環境為研究對象，在當代國際文化遺產保護的理論基礎上，從文化遺產價值分析的角度入手，通過追溯碑林的歷史演進過程、回顧它的保護歷程、調查其保護現狀，對碑林文化遺產的價值進行了重新判定與分析，並就當前西安碑林保護的內容、方法、工作要點及其關鍵性問題提出了觀點和建議。
  12. The systematic and synthetic description and review of lianas, chiefly in tropic, are described and reviewed in this paper, in which some ecological questions of lianas are included distributed as follows : ( 1 ) the conception and significances of lianas ; ( 2 ) liana flora and its distribution in the world ; ( 3 ) its biological characteristics ; ( 4 ) its ecological characteristics ; ( 5 ) its abundance ( density ) and species - richness in tropical forest ; ( 6 ) the ecological significance of lianas - aggregation in gap and the variance of its abundance in the process of forest succession ; ( 7 ) the relationship between lianas and trees ; ( 8 ) the positive and the negative contribution of lianas to tropical forest ; ( 9 ) the types of climbing mechanism of lianas and its competitive predominance ; ( 10 ) global climate - variance ( co2 increase ) promotes abundance of lianas to increase, and some ecological consequence are resulted from which

    摘要對藤本植物（以熱帶為主）研究的動態與發展進行了綜述，其中包括： （ 1 ）藤本植物的概念及重要性； （ 2 ）藤本植物區系和分佈； （ 3 ）藤本植物的生物學特性； （ 4 ）藤本植物的生態學特性； （ 5 ）藤本在森林中的多度（密度）及種的豐富度； （ 6 ）藤本在空地上聚生的生態意義以及它們在森林演進過程中的消長； （ 7 ）藤本與樹木的相互關系； （ 8 ）藤本對森林正面和負面的影響； （ 9 ）藤本的攀援方式類別及其競爭優勢； （ 10 ）全球氣候變化（ co2濃度增高）促進藤本優勢度增長並導致不良的生態後果。
  13. 2. a uwa communication system is designed, lake experiments are also conducted with several equalization methods being employed. one key of the techniques in underwater acoustic communication - synchronization technique is studied

    在吉林松花湖作了水聲通信試驗，驗證了上述演算法的模擬結論，並對水聲通信的關鍵技術之一的相關同步技術進行了分析研究。
  14. Wuxi county is located in typically fragile ecological strip - - three gorges reservoir area and belongs to national ecological environment construction key region. based on soil and water conservation project in wuxi county this article designs the landscape health assessment system and analyses health classes of degraded ecosystem by applying fuzzy ahp method, discloses degraded characteristics in aspect of land use patterns in wuxi county contrasted with bishan county, puts forward ecological restoration models combined with soil and water conservation harnessing, analyses and compares soil fertility quality in biological communities of different ecological restoration succession phases and restoration measures

    本論文依託巫溪縣水土保持生態修復項目，運用模糊層次分析方法，進行退化生態系統的景觀健康評價體系設計與健康等級分析；通過對比研究巫溪縣與另一個生態修復試點縣? ?璧山縣的土地景觀空間格局分析，揭示巫溪縣土地利用格局上的退化特徵；提出與水土保持治理相結合起來的生態恢復模式；引用土壤肥力質量指數，對生態修復區不同生態恢復演替階段群落及不同時期坡改梯、休耕地與封山育林三項生態修復措施的土壤肥力質量分析與對比。
  15. At the same time, the carbon cycle at mid - latitudes of north hemisphere still remains unknown, which leads people to nowhere in gaining a deep understanding of the mechanism of global change. in xilin river basin, inner mongolia, which is right located at the mid - latitudes of north hemisphere, the high speed of social - economic development shows high rate and strong intensity to land use / land cover change in the past two decades. in this paper, remote sensing, gis and ecological modeling techniques were combined to study the land use / land cover change and carbon cycle of xilin river basin

    文章首先對內蒙古錫林河流域四個時期的landsattm / etm +影像進行土地利用/土地覆蓋分類、成圖；通過對比，分析了錫林河流域近20年的來的土地利用/土地覆蓋變化；並進一步運用gis方法研究了錫林河流域草地退化的演化路徑；最後運用century模型模擬了內蒙古錫林河流域大針茅草原、羊草草原的碳循環過程，繪制了其碳循環模式圖；並進一步分析了錫林河流域典型草原生態系統對大氣碳庫的源/匯功能。
  16. The fipwa based on electric integral equation ( efie ) is presented firstly, the green ’ s function expansion with sommerfeld identity ( based on bessel kernel ) is studied and the msdp for two cases is formulated. in order to improve the iteration property and avoid inner resonance, the combined field integral equation ( cfie ) fipwa is then constructed successfully

    首先研究了基於電場積分方程的快速非均勻平面波演算法，對索末菲恆等式（基於貝塞爾積分核）展開的格林函數進行了深入研究，分兩種情形解決了修正最陡下降路徑的設計問題。
  17. Based on the investigation on the structure and niches of secondary forests in jiulongkeng, guangze, fujian province, the distribution law was studied and natural succession tendency was worked out for primary arbors and shrubs in different slope direction, which provides scientific fundamental for artificial stimulating natural regeneration

    摘要通過對福建光澤九龍坑不同坡向天然次生林的林分組成和生境的調查，研究主要喬灌木樹種在不同坡向林分中的分佈規律，分析出不同坡向林分的天然演替趨勢，為人工促進天然更新提供科學依據。
  18. This thesis analyses the existing concept - based retrieval systems, based on this introduction, and puts forward a concept retrieval system based on synonyms recognition. automatic recognition of synonyms plays an important role in concept - based information retrieval. based on the analyses of the synonyms recognition, we use the similarity degree among the words to recognize synonyms, and mining a lot of multiple synonyms

    同義詞的自動發現和識別在基於概念的信息檢索領域有著重要的研究意義和應用價值，本文對國內和國外同義詞識別演算法進行研究和分析的基礎上，對基於語義體系的同義詞識別演算法，即基於《同義詞詞林》的同義詞識別演算法和基於《知網》的同義詞識別演算法進行了深入的研究，利用詞匯間的語義相似度度量來進行同義詞識別，挖掘出大量的復合詞形的同義詞。
  19. Born and raised in rigid singapore, thomas never had a clue he was going to be an actor until he started acting in short 30 - min theatre shows touring around schools in singapore

    出生並成長在嚴肅的新加坡，林毅煒從來沒想過他可能成為一名演員，直到他參加一個只有三十分鐘長的舞臺劇，並在新加坡的各個學校進行巡迴演出。
  20. This text carries on preliminary deduction and calculation on the measurement of forest environmental externality by means of the externality theory, and put out formulae as the price of forest environmental resources means marginal production cost and marginal use cost subtract from the international price of the forest products log

    本文利用外部性理論對森林環境外部性的計量分析進行初步的演繹和推算，推出公式為森林環境資源價格森林資源產品原木的國際價格邊際生產成本邊際使用成本。
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