| 单词 | climatic optimum |
| 释义 | > as lemmasclimatic optimum climatic optimum n. [with sense (b) compare German Klima-Optimum (1909 or earlier)] (a) a set of climatic conditions which are most favourable for a particular species or for human comfort and health (rare); (b) Palaeontology and Archaeology any of various historical or (usually) prehistoric periods characterized by comparatively warm and dry conditions compared to the preceding and following periods, spec. (also Climatic Optimum) such a period which occurred in northern latitudes in the early Holocene, after the last glaciation (approx. 9000 to 5000 years ago, but varying with location). ΚΠ 1916 F. E. Clements Plant Succession 98 It is the mutual and progressive interaction of habitat and community, by which extreme conditions yield to a climatic optimum. 1923 Geografisker Annaler 5 235 The Scandinavian phyto-palaeontologists have stated that during the climatic optimum the summer-temperature was some two degrees higher than nowadays. 1963 R. O. Muir tr. M. Schwarzbach Climates of Past v. 62 In Greenland, Franz Josef Land, and Spitzbergen, raised beaches dating from the postglacial Climatic Optimum, carry the edible mussel, Mytilus edulis, which no longer survives in these latitudes. 1983 Jrnl. Field Archaeol. 10 456/2 This period was followed by a drier interval during the succeeding climatic optimum from 500 b.c. to 600 a.c. 1999 New Scientist 22 May 39/2 Temperatures were a little warmer than today during the ‘altithermal’ or ‘climatic optimum’ between 9000 and 6000 years ago. Climatic Optimum climatic optimum n. [with sense (b) compare German Klima-Optimum (1909 or earlier)] (a) a set of climatic conditions which are most favourable for a particular species or for human comfort and health (rare); (b) Palaeontology and Archaeology any of various historical or (usually) prehistoric periods characterized by comparatively warm and dry conditions compared to the preceding and following periods, spec. (also Climatic Optimum) such a period which occurred in northern latitudes in the early Holocene, after the last glaciation (approx. 9000 to 5000 years ago, but varying with location). ΚΠ 1916 F. E. Clements Plant Succession 98 It is the mutual and progressive interaction of habitat and community, by which extreme conditions yield to a climatic optimum. 1923 Geografisker Annaler 5 235 The Scandinavian phyto-palaeontologists have stated that during the climatic optimum the summer-temperature was some two degrees higher than nowadays. 1963 R. O. Muir tr. M. Schwarzbach Climates of Past v. 62 In Greenland, Franz Josef Land, and Spitzbergen, raised beaches dating from the postglacial Climatic Optimum, carry the edible mussel, Mytilus edulis, which no longer survives in these latitudes. 1983 Jrnl. Field Archaeol. 10 456/2 This period was followed by a drier interval during the succeeding climatic optimum from 500 b.c. to 600 a.c. 1999 New Scientist 22 May 39/2 Temperatures were a little warmer than today during the ‘altithermal’ or ‘climatic optimum’ between 9000 and 6000 years ago. < as lemmas |
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