| 释义 |
mesotherm Bot.|ˈmɛsəʊθɜːm|
[f. Gr. µέσο-ς middle + θερµός hot. Cf. meiotherm.]
A plant requiring a moderately warm temperature. Hence mesoˈthermic a.
1875J. G. Baker Bot. Geog. 48 Mesotherm, characteristic of the subtropical or warm-temperature zone, and therefore needing to be entirely protected from frost. Ibid. 51 Mesotherm types. Ibid. 102 Geographical Range of the Mesotherms. 1903W. R. Fisher tr. Schimper's Plant-Geogr. 236 The most important family of the north temperate zone among the Polycarpicae, that of the Ranunculaceæ, is mesothermic and microthermic. 1960N. Polunin Introd. Plant Geogr. x. 201 Examples [of climatic relics] are the mesothermic plants to be found in some boreal areas that have cooled at least since the ‘postglacial optimum’ when such plants presumably migrated to these areas. Ibid. 285 The great world vegetational zones..depend primarily on temperature, and we find it convenient to distinguish between megatherms (plants favouring warm habitats), microtherms (plants favouring cold habitats), and the intermediate mesotherms. |