林分發育 的英文怎麼說
中文拼音 [līnfēnfāyù]
林分發育
英文
stand development-
Through the study of three factors of a, s, c in lunan area, we have found that, under the modem natural conditions, the actual height of stone pillars is still increasing at the rate of 15. 77mm / ka, and their visible height 639. 6mm / ka, moreover, soil layer which is one of the most important driving forces for the heightening of stone forest is quickly becoming thiner and thiner at the speed of 623. 83mm / ka
同時，研究也表明，土壤co :的最大濃度主要出現在土下60一120cm ，土壤水的含量在土下60一80cm處也較大，由此決定了土下最大溶蝕強度主要分佈在土下150cm內，包氣帶強溶蝕循環帶的下限約在土下iom處。因此，在厚達數百米的路南群的覆蓋之下，是不可能發育石林的。( 5 ) since 3100 ab. r, through comprehensive analysis of these proxy climatic substitute indexes indicates : this was a dry and cold period in which the temperature fell the precipitation decreased ; the vegetation may be forest prairie ; human civilization further developed and the human " s influence on the environment was greater in intensity and wider in range
今，綜合多氣候代用指標和本期人類活動明顯加強情況的分析表明：本期氣候再次出現溫度降低、降水量減少的變化，在趨于乾冷氣候條件下，在前期氣候較適宜期發育的森林植被發生了退化，當時的植被可能為森林草原或乾草原。( 3 ) 6000 - 5000ab. p, through comprehensive analysis of these proxy climatic substitute indexes indicates : this was a dry and cold period in which the temperature was the lowest and the precipitation was the least ; the vegetation may mainly be forest prairie ; in the early stage of the period appeared yangshao middle culture - the prosperous culture of miaodigou type, and in the late stage there was yangshao late culture - the culture of xiwang village type
P出現了老官臺文化，中後期即本區老官臺文化之後，出現了仰韶早期文化。門） 6000 5000ab p ，綜合多氣候代用指標的分析結果表明：本期氣候為全新世以來溫度最低、降水量最少的最乾冷時期，在這種乾冷氣候條件下，在前期氣候最適宜期發育的森林植被發生了退化，當時的植被可能以森林草原為主。The study has investigated and compared soil physical, chemical, biochemical properties of eight stands on paired sites in mountainous regions of northeastern china, trying to look for the mechanism of soil degradation and the change trend of soil properties in different age of plantations in relations to forest productivity. the eight stands are 4 first rotation of larix olgensis plantations with different age classes, the second rotation of larix olgensis young stand, pinus sylvestris var
本文通過固定和典型樣地，對東北山地不同生長發育階段落葉松人工林和二代落葉松幼齡林以及與二代落葉松幼齡林同一塊林地的樟子松幼齡林、天然次生林、落葉松水曲柳混交林等8個林型土壤質量進行了對比與分析，深入探討了落葉松人工林土壤質量降低的機理和不同發育階段土壤質量變化規律以及與森林生產力變化的關系，並提出了林地土壤質量調控措施。Light is the most important environmental factor that affect growth and development of plants. photosynthetic adaptability is the important ecological factor that limits distribution and survival of plants during gardending and planting
光是影響植物生長發育最重要的環境因子，在園林綠化和引種栽培中，植物對光照的適應是限制植物分佈與引種成活的重要生態因素。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3參15Tamshui line developed expected functions of rapid transit systems since the revenue service. pedestrian area, strip gardens, hydrophile parks, public art exhibitions, dragon - boat shape station, kuandu temple, mangrove ecological areas, guanyin mountain, and sunset of tamshui are reflected each other and fulfill the environment of tamshui line with energy, civilization, and commercial opportunity along the old route of the railroad
淡水線通車迄今，除充分發揮預期之大眾運輸功能外，另由於沿線之行人徒步區線形公園淡水站親水公園公共藝術展示區及士林地標劍潭站舟造形與關渡宮紅樹林生態保育區觀音山淡水落日等觀光景點彼此輝映，相得益彰，使得沿線環境景觀由臺鐵北淡鐵路支線老舊單調刻板印象，蛻變成為綠意盎然且充滿文化休閑商機之現代化文明新都市走廊。In order to construct vegetation in line with local conditions, in addition the paper analyzes the viewpoints relevant to vegetation properties of the loess plateau along with regional differentiation of bio - climatic conditions and vegetation zonality. it is shown that the loess plateau might be regionalized into different vegetation zones of forest and steppe. it could n ' t be believed that zonal environment do n ' t be possessed in the loess plateau
為因地制宜地建造植被，本文還分析了黃土高原植被屈性的有關觀點，以及生物氣候條件在不同地域之間的分異性和植被地帶性特徵，說明黃土高原可表徵為森林、草原等地帶，不能認為黃土高原不具有森林發育的地帶性環境。This paper introduces and analyses the current progress in research of rana chensinensis, including artificial breed, growth and development and the efficacy of oviductus ranae
對中國林蛙的人工養殖、生長發育、林蛙油功用等方面的研究現狀進行綜合介紹與分析。Mongolica, soil acidity, humus component content, available k, total p, organic p, inorganic p, enzyme activity, and microbe amount of young stand olgensis of the second rotation of larix olgensis in non - rhizosphere soil also
不同發育階段影響林木生長量的主要養分因子是土壤有機質、速效鉀、水解氮以及土壤磷形態的全磷、有機磷、無機磷總量、有效磷、 ca一p和fe一p 。Then, by the comprehensive analysis of essential conditions for stone forest development, and the quantitative study on the evolution phases of bajiang karst catchment and the spacial coupling analysis of its hydro - geomorphological system, the paper studies the relationship between the evolution of bajiang karst drainage area and the development of stone forest, and, combined with the evolution history of the catchment, puts forward a model concerning the relationship between the evolution of bajiang karst catchment and stone forest development, in the mechanism of " tri - level erosion ", if a < s < c, the visible and actual height of stone pillars will keep on increasing, meanwhile, soil layer among stone pillars will become thicker and thicker, so the the height of stone pillars " root will become higher and higher, too
在「三重剝蝕」機制中，若a s c ，石柱的可見高度和實際高度會不斷增高，同時，石柱的根部的土層會增厚，其土下部分的高度也會不斷增大。若a c s ，說明石柱的實際高度在增加的同時，其可見高度也在增加，但土層會變得越來越薄，最終當底土被完全剝蝕掉后，氣下溶蝕和土下溶蝕的差異消失，此時a接近於c ，石柱的實際高度將停止拔高或極緩慢增長，並在各種物理、化學風化的作用下而變得日益矮小。若s a c ，石柱的可見高度將趨于變矮，但驅動石林發育的土層厚度將會增大。The homepage provides the information of research interests, details of seminar schedules ( date, speaker, title ), course descriptions, research facilities ( includes cell & molecular imaging facility, laser scanning confocal microscopy and so on ), and links to university of north carolina medicine department, centers and programs, curricula, related center and program ( includes bowels center for alcohol studies, lineberger comprehensive cancer center, cell and molecular biology trainning program, center for gastrointestinal biology and disease, department of ophthalmology and so on )
中文簡介:查珀爾希爾北卡羅來納大學醫學院細胞和發育生物學系的主頁提供研究方向信息，講座日程安排的詳情（日期，發言者，標題） ，課程描述，研究設施（細胞、分子成像設備，激光掃描共焦顯微鏡等等） ，與北卡羅來納大學醫學系，中心，項目，課程，相關中心與計劃（酒精研究內臟中心，林內貝格綜合癌癥中心，細胞與分子與生物訓練計劃，腸胃生物疾病中心，眼科系）的鏈接。Therefor, in the light of theory and methods of karst hydrogeomorphology and the knowledge of transformation, balance and variation of matter and energy in karst drainage basin, we can examine stone forest within a specific scope of time and space, and reveal the mechanism and the development model of stone forest with the help of the principle of the mutual response processes among base - level, water flow and forms. just based on the understanding above, the paper, with a special reference to the lunan stone forest which is the best developed one in china, discusses the hydro - geomorphlogical structure of the bajiang river, geomorphological types and spacial distribution feature of the stone forest, and studies the erosion rate on the top of stone forest, soil erosion rate, sub - soil dissolution rate and their combined influences on the evolution of stone forest, furtherly brings forward and demostrates the " tri - level erosion " mechanism for the development of stone forest
正是基於這種認識，本文以我國石林發育最完美的路南石林為研究對象，研究了巴江喀斯特流域的水文地貌結構特徵、石林的形態類型及其空間分佈特徵；探討了石柱頂部的剝蝕速率（ a ） 、表土剝蝕速率（ s ） 、土下溶蝕強度（ c ）及其組合對石林發育的影響，提出並論證了路南石林發育的「三重剝蝕」機制；通過對石林發育必備條件的剖析，以及對巴江喀斯特流域演變階段的定量研究、水文地貌系統的空間耦合分析，探討了巴江喀斯特流域的演變與路南石林發育間的關系，並結合該流域的演化史，提出了巴江喀斯特流域演變與路南石林發育的模式。( 2 ) 8500 - 6000ab. p, according comprehensive analysis of these proxy climatic substitute indexes shows : this was a period in which the temperature was the highest and the precipitation was the greatest ; there appeared forest vegetation ; in the middle stage of the period was laoguantai culture ; and after that there appeared yangshao early culture
（ ） 8500 6000ab p ，綜合多氣候代用指標的分析結果表明：本期氣候為全新世以來溫度最高、降水量最大的最適宜期，在這種適宜的氣候條件下，發育了森林景觀。本期中期即7500 7000abAs a kind of karst geomorphology, stone forest is always distributed in a kast drainage basin, its development is inevitably related to evolution of the whole catchment
作為一種喀斯特地貌形態，石林總是分佈於特定的流域中，它的形成和發育演化與其所在流域的整體演化必然存在著密切的聯系，石林的出現、消亡是和流域地貌的發育演化階段相關的。Located in remote mountain district as well as falling behind relatively in economy, according to its own unique geographical resource environment and actual developing level of social economy, yanbian is supposed to put " agriculture and forestry " in the fundamental position, complying with the characteristics of agriculture - and - forestry - oriented industry and giving full play to its unique ecological environmental conditions and special living resources, accelerates the paces of the ecological prefecture construction and focuses on the construction of local product industry, attaching importance to the production of such major products as chinese herbs and edible mushrooms, promotes the development of green industry at full speed, and proceeds to shift gradually to the production of organic products, last but not the least, fosters and develops new hi - tech industry that accords with its own industry characters to set up efficiency - related industry of ecological environmental protection and then have the preservation of ecological environment on the benign developing track in step with economic construction
地處邊遠山區經濟相對落後的延邊應根據自己獨特的地理資源環境和社會經濟實際發展水平，擺正「農林」產業的基礎地位，遵從工業的「農林」結構型特點。應充分發揮我州生態環境的獨特條件和特有的生物資源，加快生態州建設的步伐，注重狠抓特產業的建設，以中藥材、食用菌生產為重點，促進綠色產業的飛速發展，並使之逐步轉向有機產品生產。大力培育和發展與自己的產業特點相吻合的高新技術產業，建立生態環保效益型經濟，從而使生態環保與經濟建設同步走上良性的發展軌道。According to " forestland steady moisture capacity ", water deficiency in the former is only in surface and recovers timely after rain season. but in artificial forestland, there is an apparent shortage especially in deep layer, so it affects growth and development of vegetation
以「林地穩定持水量」為依據，天然林地水分虧缺不嚴重，只在淺層形成了輕度虧缺，並在雨季后能得到及時的恢復；同時這種虧缺並沒有影響到了天然植被的發育與演替。2 the comparisons between soil water deficiency in natural and artificial forest land show that : ( 1 ) the concept of " forestland steady moisture capacity " is presented and defined as the lowest soil water content that can not affect the forest regular growth primarily and cause inverse succession in community
2天然林地和人工林地土壤水分虧缺狀況對比： （ 1 ）提出了「林地土壤穩定持水量」的概念，初步定義為「不會影響到林分正常生長、發育，不會導致群落產生逆向演替所需的最低土壤含水量」 。As in the karst mountain guiyang city, its karst topography developed well, karst water shortages and environmental significance of the dual structure, fewer territories, forest shortage, which make itd self - regulating capacity of the ecological environment lower than before, highly vulnerable to man - made factors, such natural conditions make the city green in a pattern of distribution and ecology of the entire city will play a decisive role in the extraction of urban green
由於地處喀斯特山區的貴陽市而言，其喀斯特地貌及其發育，由於喀斯特環境獨具的二元結構和缺水、少土、少林的生態環境特徵，使得喀斯特生態環境自我調節能力極低，極易受到人為因素的影響，這樣的自然條件使得城市綠地的分佈與格局在很大程度上對整個城市的生態環境起著決定性作用，因此在提取城市綠地信息后，針對具體情況對需重點改進的綠地格局及類型進行規劃及布局。分享友人