breadth index
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Niche breadths of twenty dominant species were analyzed using Shannon-Wiener niche breadth index, and the dominant species were classified into four ecological groups.
采用Shannon-Wiener生態(tài)位寬度指數(shù)和Petraitis生態(tài)位重疊指數(shù)測定了滹沱河流域濕地植被20個優(yōu)勢種群的生態(tài)位寬度和生態(tài)位重疊。
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Using the Shannon-Wiener's niche breadth index and the Pianka's niche overlaps index, we found that the Nereis japonica, nemerteans and eelworms had broad niche breadths (above 2.80); the niche overlaps among them was high (above 0.90) in the quantitative analysis on the 21 species present in the quantitative sample analysis.
對定量取樣中獲得的21個物種以Shannon-Wiener指數(shù)為基礎(chǔ)進行了生態(tài)位寬度測定黄色视频在线免费亚洲,以Pianka重疊指數(shù)為基礎(chǔ)進行了生態(tài)位重疊值分析日韩毛片无码一区二区三区,結(jié)果表明日本沙蠶黄片在线看不卡、紐蟲和線蟲的生態(tài)位較寬,均為2.80以上国产高清无码202,它們之間的生態(tài)重疊值也較高,均為0.90以上黄色一级一区。
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Result The temporal and spatial niche breadth index of mango anthracnose in control area were 0.1785 and 0.9656, resp., that in conventional area were 0.1754 and 0.7966, resp., and that in prediction area were 0.1762 and 0.8267, resp.
結(jié)果]對照區(qū)芒果炭疽病時間和空間生態(tài)位寬度指數(shù)分別為0.1785、0.9656wwwj8;常規(guī)區(qū)芒果炭疽病的時間和空間生態(tài)位寬度指數(shù)為0.1754和0.7966一级A片刺激高潮久久;預(yù)測區(qū)芒果炭疽病的時間和空間生態(tài)位寬度指數(shù)為0.1762和0.8267。
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By using Shannon-Wiener index of niche breadth and Pianka index of niche overlap, this paper studied the niche characteristics of main plant species at different succession stages of vegetation in desert areas of north Gulang County, Gansu Province.
利用Shannon—Wiener生態(tài)位寬度公式和Pianka生態(tài)位重疊公式免费AV网站在线免费看,計測分析了甘肅省古浪縣北部荒漠植被主要植物種在不同植被演替階段的生態(tài)位寬度和生態(tài)位重疊永久免费A级毛片软件www。
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Based on the investigation of the growth status of gardens plants with the same site conditions, the important values of populations were calculated with the software of ArcMap, the niche breadth of populations were studied using the Shannon-weinne diversity index, Levins niche breadth index and niche overlap.
通過對立地條件類型相同城市的園林綠地植物生長狀況進行調(diào)查黄色a片的视频全免费,運用ArcMap軟件計算各種群的重要值;采用Shannon-weinne多樣性指標欧美一级黄C片、Levins生態(tài)位寬度指數(shù)和1994年黃英姿提出的生態(tài)位重疊計算公式進行種群生態(tài)位寬度的研究,將種群生態(tài)位理論運用于生態(tài)園林建設(shè)中在线观看国产对白网站视频免费播放。
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breadth index:寬度指數(shù)
BREAD AND BUTTER BUSINESS 基本業(yè)務(wù) | BREADTH INDEX 寬度指數(shù) | BREAK-EVEN 不虧不盈,收支相抵.
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the breadth thrust index:abbr. bti; 廣量沖力指標