| 释义 | plagio-|ˈpleɪdʒɪəʊ-, ˈplægɪəʊ-|
before a vowel or h plagi-, comb. form, repr. Gr. πλάγιος oblique, slanting, f. πλάγος side. plagioˈclimax [climax n. 4 b] Ecol., in a plant community, a climax produced or affected by some disturbance of the natural conditions; plagioˈclinal a. [Gr. κλίν-ειν to incline], applied to mountain structure, when the strike of the rock runs across the axis of elevation; ˈplagiodont a. [Gr. ὀδούς tooth], having the palatal teeth set obliquely or in converging lines, as in some serpents; ˈplagiograph [-graph], an instrument for reproducing a plan, diagram, etc., in a position at a given angle from the original; ˈplagiosere [sere n.2] Ecol., a series of plant communities whose development is affected by some disturbance of the natural conditions.
1935A. G. Tansley in Ecology XVI. 293 We might call such successions, which undoubtedly exist, plagioseres, i.e., ‘bent’ or ‘twisted’ seres, and if the vegetation really does come into equilibrium with the deflecting factor, of a plagioclimax, if such terms are considered useful. 1939― Brit. Islands & their Vegetation x. 225 Their [sc. plagioseres'] end products, varying with the precise form of exploitation, are characteristic biotic climaxes or plagioclimaxes. 1960N. Polunin Introd. Plant Geogr. xi. 330 Subclimaxes due to such treatments as persistent burning or grazing (often called disclimaxes, being due to disturbance, or plagioclimaxes, owing to the deflection involved). 1974Nature 10 May 111/3 Repeated burning of the scrub could have reversed the trend in vegetational development caused by ameliorating climate and have produced an anthropogenic plagioclimax of arid scrub.
1879Callaway in Geol. Mag. VI. 221 A plagioclinal axis is not necessarily Precambrian, but its transverse strike should suggest inquiry.
1890Cent. Dict., Plagiodont. 1895in Syd. Soc. Lex.
1935Plagiosere [see plagioclimax above]. 1939A. G. Tansley Brit. Islands & their Vegetation x. 225 These ‘deflected successions’ or plagioseres..as they may be called, are characteristic results of man's activity. 1962C. J. Taylor Trop. Forestry vi. 45 It is possible..for the soil to deteriorate so much that the retrogression of the vegetation will become permanent and thus a deflected sere or plagiosere will be the result. |
单词 plagihedral 释义 plagihedral, a. Cryst.|pledhidrl, -hdrl|Also plagiedral.[f. plagio- ......
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