重疊寬度 的英文怎麼說
中文拼音 [zhòngdiěkuāndù]
重疊寬度
英文
overlapping width-
There are five natural sample zones of adiantum reniforme l. var. sinense y. x. lin investigated, and recorded 34 species. 10 dominant species were used to calculate the niche width of populations and the niche overlap interpopulations
調查了5個自然樣地，記錄了34個伴生種，取10個優勢種進行種群生態位寬度與生態位重疊的計算。Form. taxus chinensis var. mairei is protecting plant in the first class, which is a precious and endangering plant in china in this paper, the quantitative characterics of form. taxus chinensis vsr. mairei population including age structure, spatial distribution pattern, growth dynamics of tree basal area, niche characterics, fractal dimension and competition between specises were studied using methods of mathematics ecology from the angle of population ecology of form. taxus chinensis var. mairei, then the prent state and the endangering causes were analysed. this research offers gist to protecting and enlarging the crude resourse of form. taxus chinensis vsr. mairei population, afforesting plantation and sustainable utilize for us
本文從南方紅豆杉種群生態學的角度、主要應用數學生態學的方法探討南方紅豆杉種群的數量特徵，包括南方紅豆杉種群年齡結構、種群空間格局（探討分佈格局動態規律與生境相互關系） 、不同立地條件下種群優勢度增長趨勢、生態位寬度、生態位相似比例、生態位重疊、空間占據能力及種間競爭等，分析其目前現狀及瀕危原因，期望為南方紅豆杉野生資源的保護和擴大、營造人工林及可持續利用提供理論基礎，也為瀕危植物種群生態學的研究提供參考。Based on the niche ecostate - ecorole theory proposed by chunquan zhu, we improved the model of regeneration niche, regarding the niche of the arbor tree and the sapling as the ecostate and the ecorole of the regeneration niche
摘要根據朱春全提出的態勢理論對更新生態位寬度和更新生態位重疊公式進行改進，分別以林隙大喬木和小徑木的生態位作為更新生態位的態和勢來計算動態的森林更新生態位。This paper selected the middle part of taihang mountain as study area. the species diversity, interspecific association and correlation, and niche breadth and niche overlap were studied. the community types, community structure, ecological relationships between species diversity and community types, environmental variables were analyzed in details
本文以太行山中段植被為研究對象，從植物群落的物種多樣性、種間關系及群落優勢種的生態位寬度和生態位重疊三個方面深入探討和研究了該地區群落類型、結構、生態及分佈格局，群落多樣性與群落類型、生境、群落結構之間的關系，以及主要優勢種的種間關系。In this paper, the niche characteristics of the dominant herb species in the subtropical ev - ergreen broad leaved woodland ( 53 species ) have been measured at the natural reserve of wanmu ling, including niche breadth, niche proportional similarity and niche overlap
對萬木林自然保護區常綠闊葉林森林群落的53個主要種群進行生態位測定，包括生態位寬度、生態位相似比例、生態位重疊。Simpson shannon - wiener methods for measuring niche breadth and wang - gang niche overlap formula are more fitted to ecotone
Simpson 、 shannon - wiener生態位寬度公式和王剛生態位重疊公式對該區更為適用。The result shows that the vast majority of the main tree populations in the ? castanopsis carlessii ? forest are of broad niche ; that the relation among the species is very complex ; and that many species share the same resources
採用定量分析方法，對武夷山米儲林群落12個主要種群生態位（包括生態位寬度、生態位相似性比例、生態位重疊）進行了測定。The niche breadths of the populations of s. tsinyunensis are greatest in the communities we studied, which indicates the ecological adaptation of s. tsinyunensis is relatively stronger and the abilities of utilizing resources are greater. with the help of pianka ' s niche overlap we further studied the niche overlap among different species in the sampled communities. the niche overlap among the species with the same or similar environment requirements are greater, especially nich overlap between s. tsinyunensis and those with broad niche breadths in the communities are much greater
5 ）所調查的各群落中，縉雲黃芩的生態位寬度均較大，說明縉雲黃芩的生態適應幅度較大，對環境資源的利用能力較強；縉雲黃芩與群落中其主要伴生物種間的生態位重疊也較大，表明他們對資源利用的相似程度較高，導致縉雲黃芩與其它物種對某些資源的共同需求，在資源相對不足的情況下，生態位重疊較大的種間將會產生較為激烈的資源利用性競爭。The simulated results show that we can improve the sensitivity by setting the optical bias at / 2, reducing the gap of electrode, increasing the overlap integral factor, reducing the insert lose, adopting suitable segmentation number, increasing the electrode length, increasing the optical power, reducing the wavelength and the relative intensity noise and reducing the receive bandwidth ; obtain the wider bandwidth utilizing reducing the electrode length and the capacitance of modulator, segmentation the electrode ; increase the dynamic range using lowering noise, increasing the optical power at the detector and lower optical bias
通過計算得知，使傳感器相位偏置為/ 2 ，減小電極間距，提高電光重疊因子，減小器件插入損耗，採用合適的分段數，增加電極長度，增大光功率，降低激光的波長，減小相對強度噪聲，減小接收帶寬，對提高靈敏度的效果是非常明顯的。而減小天線長度，降低調制器電容，電極分段，都可以獲取較大的帶寬。降低系統噪聲;增加到達探測器的光功率，採用較低的光學偏置，都可以增大線性動態范圍。The results indicated that the greater the niche breadth of a species was, the stronger the ability of adaptation to environment and using resources was. the greater the niche overlap value for some species - pairs, the more similar the environmental requirements and resource use. the species with wide niche breadth may have high overlap value with species with narrow niche breadth, and low on the contrary
結果表明，種群生態位寬度越大，對環境的適應能力越強，對資源的利用能力也越強；生態位重疊越大，種群間的生態相似性越大，利用資源的相似性程度越高；生態位寬的種群對生態位窄的種群可能有較高的重疊值，反之則較低；生態位寬度最大的種群不一定為群落的建群種。A new sequential images sub - splicing method is proposed, which based on features of markers and aimed at looking for the same markers in overlapped area of two adjacent images to finish the splicing task. no real image coalescence is done, but the redundant information is diminished, so the two adjacent images are considered well spliced. big marks are interlaced with small ones to realize accurate image sub - splicing in real situation
闡述了種子動態圖像拼接原理，提出了動態圖像亞拼接檢測方法，該方法基於標記特徵，以搜尋相鄰兩幀圖像中重疊區域內相同標記為目標，利用相同標記在前後兩幀圖像中應具有相同特徵向量的特點，通過特徵向量的匹配，實現冗餘圖像信息的去除，達到相鄰兩幀圖像的拼；提出了大小間隔的標記方案，以適應採集工況，實現準確圖像亞拼接；研究了重疊區域寬度對拼接精度的影響，給出了重替區域寬度設置方式。68 quadrats were divided into 8 types of communities by twinspan, which can be treated as one - dimension resource states. the niche breadths and overlaps of main dominant species were measured using a series of indices proposed by levins, shannon - wiener and petraitis
在該地區植被的優勢種生態位的研究方面，仍然運用twinspan把樣方分為8個群落類型，用levins 、 shannon - wiener生態位寬度公式和petraitis生態位特定重疊指數公式測定群落中主要種群生態位寬度和生態位重疊，並分析各種群生態位的生態學意義。分享友人