胸徑 的英文怎麼說

中文拼音 [xiōngjìng]
胸徑 英文
diameter at breast height
  • 胸 : 名詞1. （胸部） chest; bosom; thorax 2. （心裏） mind; heart
  • 徑 : Ⅰ名詞1 （狹窄的道路; 小路） footpath; path; track 2 （達到目的的方法） way; means 3 （直徑的簡稱...
  1. The method of modified simplex was applied to optimize the models, and the fitting results show that liu - logistic model was more suitable than logistic model to the actual growth trend of form. taxus chinensis var. mairei population, and the highest growth rate of basal area was the tenth age class, namely the phase when breast diameter was 68 ~ 76 cm

    以胸高斷面積代替種群生物量，分別採用logistic常規模型及劉金福提出的logistic改進模型對南方紅豆杉種群的增長動態進行研究，運用改進單純形法對模型進行優化，擬合結果表明改進模型比logistic常規模型更符合南方紅豆杉種群的增長趨勢，南方紅豆杉種群的最大增長速度出現在第10齡級，即胸徑為68 76cm時期。
  2. Result showed that different waterlogging depths have obvious effects on tree height, diameter at breast height, under branch height, trunk morphological structure, stem base form, and growth process

    結果表明：不同水分條件對池杉的樹高、胸徑、枝下高、干形、樹干基部形態及生長過程均產生明顯的影響。
  3. The results show that the water consumption of transpiration can be reckoned through standard specific conductivity of standard tree and the relative model between breast height diameter of tree and sapwood area

    結果表明，通過標準木的標準比導率和樹木胸徑和邊材面積的相關模型，可以比較準確地推算出林分的蒸騰耗水量。
  4. 4, the diameters at tree breast height ( dbh ) of trees that birds feed on change significantly for 12 years fore - and - aft ( p < 0. 01 ), which is consistent with the significant changes ( p < 0. 01 ) of dbh in habitat

    鳥類取食樹種的胸徑在12年前後變化顯著（ p 0 。 01 ） ，這一特點與其生境樹種的胸徑變化顯著（ p 0 . 01 ）是一致的。
  5. This paper gives a survey on experimental forestland. 25 tree species were selected, and arranged in order by average diameter at breast height, average height, average individual volume and annual average volume increment in a unit area in this experiment

    摘要簡要介紹了試驗林地的概況，選擇了25個樹種進行試驗，並按各樹種林分平均胸徑、平均樹高、平均單株材積和平均單位面積蓄積的年平均生長量進行排序。
  6. The paper introduced the definition and sort and field arrangement and remote monitoring of field sensor ( a new combination of remote monitor and control and network and sensor ). then tried to make use of transfer image to reconstruct tree diameter at breast height through stereo vision, the result was fairy well to realize measure diameter without field survey

    首先對其定義、種類、外業設置及遠程監控操作做了簡單的介紹，然後嘗試利用原野服務器傳回的圖像，通過立體視覺技術重建遠隔地樹木的胸徑，得到了較為滿意的結果，從而實現了不到現地便能夠測量直徑的目的。
  7. To undertake, as quickly as reasonably practicable, a campus - wide survey of trees of conservation value which includes protected tree species as stipulated by the government, any tree with a diameter of 500 mm or above at breast height, and any tree of historical value including those planted by a donor or on a special occasion

    在可行的情況下盡快進行一個整體校園有關樹木保育價值的調查，其中包括政府所指定的受保護樹木品種，任何胸徑達500毫米或以上的樹木，及任何具歷史價值的樹木，包括由捐贈者或於特別場合下栽種的樹木。
  8. The species, heights, diameter breast heights, canopy widths and plant numbers in 38 quadrats of 6 belt transects, which were located in yingsu cross - section and kaerdayi cross - section lying in the lower reaches of tarim river where populus euphratica concentrated, were investigated to study the distribution patterns, aggregation intensities and distribution pattern scales of p. euphratica populations at different distances away from the river

    摘要在塔里木河下游胡楊分佈集中的英蘇、喀爾達依斷面，設置了6條樣帶38塊樣地進行植被種類、高度、胸徑、冠幅、株數等因子調查，研究了不同離河距離胡楊格局分佈類型、聚集強度及其格局規模。
  9. 3 the influence of water on vegetation growth : ( 1 ) soil water shortage refrains the height, basal diameter and stock of trees

    3土壤水分對林分生長的影響： （ 1 ）土壤水分虧缺嚴重製約著樹高、胸徑和材積的生長。
  10. The experimental results show that the characters of tree height, dbh, and volume, etc. of every family progenies of pinus massoniana seed orchard are all evidently higher than those of control ( ck ), 7 fine family materials whose volume growth exceeds the control ' s by 50 % are totally selected as the materials for building p. massoniana improved seed orchard and industrial raw material forest

    摘要對漳平五一國有林場馬尾松種子園18個初選家系進行子代測定，採用隨機區組設計、 8次重復，對6年生的樹高、胸徑、材積等性狀進行測定，試驗結果表明：馬尾松種子園各家系子代均明顯高於對照（ ck ） ，共選出7個優良家系材積生長超過對照50 %以上材料，作為營建馬尾松改良種子園和工業原料林的材料。
  11. We choose the forest appearance tidiness, representative stands serving as standard plots, 40 stands were set up at qinling, hanzhong, huanghong in shaanxi respectively, measure every tree in the stands, measure the actual increase by the dominance tree, the time series model of individual age and diameter of quercus variabilis was established according to the actual diameter of quercus variabilis population by the fluctuant time series, the comparison of simulation and reality value of the every stand of quercus variabilis population diameter increase through the four models, the average simulation difference within 1. 5 %, the accuracy is 97. 8 % the simulation effect is better

    在陜西的秦嶺、漢中、黃龍地區選擇林相整齊、有代表性的地段作為標準地，設置樣方40個，對各樣方內的林木進行每木檢尺，通過優勢木解析的方法，測得栓皮櫟種群胸徑的實際生長量，運用起伏型時間序列分析，建立了栓皮櫟種群個體年齡與胸徑生長的時間序列模型，四個模型所得的各個樣地栓皮櫟胸徑生長的模擬值與實際值進行比較，其模擬平均誤差都在1 . 5 %以內，平均精度達到97 . 8 % ，模擬效果較好。
  12. Based on studying on the experimental forest of 14 - year - old castanopsis carlessi, the result showed that 10. 8 % increment in average dbh and 17. 8 % increment in volume occurred with digging the big holes compared to the simple holes ; 9. 4 % increment in average dbh and 14. 5 % increment in volume occurred with fertilized compared to the no fertilizer ; and 12. 1 % increment with appropriate high density compared to the general density

    摘要對14年生米櫧試驗林研究分析表明：挖大穴、回表土比簡易挖穴平均胸徑增長10 . 8 % ，蓄積量增長17 . 8 % ；施基肥比不施肥平均胸徑增長9 . 4 % ，蓄積量增長14 . 5 % ；適當稀植比一般密度平均胸徑增長12 . 1 % 。
  13. Effects of proximity of stems and tree diameters on fine root density in plantations

    樹木位置和胸徑對人工林細根水平分佈的影響
  14. The research can offer some important references to the population ecology of endangerous plant, too. based on the dates of two different circumstances, two standard life tables of form. taais chinensis var. mcarei population are founded by mathematical technique according to premising with " space deducing time ", and the curves of survival rate, mortality rate and killing power were drew. the results showed both of the survival curves of population appeared to be a type of deevey - iii and the high mortality of seeding is one of the important reasons which caused taxus chinensis var. mairei to be endangered, which badly limited the enlargement of form. taxus chinensis var. mcarei population

    由於南方紅豆杉無解析木，因而以「空間推時間」 、 「橫向導縱向」方法，將林林依胸徑大小分級，以立木級結構代表年齡結構，採用分段勻滑技術，對兩個不同生境的南方紅豆杉種群編制特定時間生命表，繪制存活曲線，結果表明不同生境的南方紅豆杉種群的存活曲線均趨于deevey -型，兩地差異較小，幼苗死亡率極高，不同生境的幼苗死亡率均達到96以上。
  15. Based on investigation of natural forest vegetation in chaoguanxigou watershed of rocky mountain area of north of china, the composition of species, structure of dbh of trees and species diversity of trees and shrubs in the course of forest succession are researched

    摘要基於華北土石山區潮關西溝流域天然森林植被調查的基礎上，對森林植被群落演替中群落樹種組成、胸徑結構和生物多樣性變化進行了研究。
  16. Through the stand investigation by setting up the sample site, the investigation results showed that the average dbh of 15 - year - old alniqhtllm fortunei planted under nature was 60 % larger than that of 17 - year - old pinus massoniana plantation under the same condition, the average tree height of the above was 38 % larger than that of the latter, the average single - tree volume of the above was 3. 2 times higher than that of the latter, the above showed the absolute dominance in stands

    摘要設立標準地進行林分調查，在標準地中選取擬赤楊標準木進行樹干解析，採用生長對比方式分析擬赤楊在馬尾松人工林中的生長情況，調查結果表明，在同一環境條件下， 15年生天然下種的擬赤楊比17年生馬尾松人工林平均胸徑大60 % ，平均樹高高38 % ，平均單株材積大3 . 2倍，在林分中表現出絕對優勢。
  17. The result showed there was some logistic relation between them, but not significant

    利用邏輯斯蒂回歸分析表明，樹干熏黑高度和胸徑對蟲害發生數量有一定影響但不是很顯著。
  18. The area of plot sampling in every typical community locality on the small protected area in huangyinling were 1 600m2. the site factors were investigated by the method of forest community investigation, and the species, body number, height, d. b. h., coverage of herbage and so on were recorded

    在黃茵嶺生態保護小區中亞熱帶常綠闊葉林中設置樣地，每個群落的樣地調查面積均為1600m ~ 2 ，採用森林群落的調查方法，調查立地因子，記錄群落植物的物種名、個體數、高度、胸徑、草本層蓋度等。
  19. It was to the east of maitreya top, around 1, 000years old. its diameter was 95cm

    樹近千年，胸徑95cm ，為北京市一級保護古樹名木
  20. The number of trees planted should be more than adequate to compensate for the trees lost in terms of the aggregate dbh

    以樹木胸徑的方法計算樹木損失的數量，然後栽種相等或更多的樹木作為補償。
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