| 单词 | carbon source | 
| 释义 | > as lemmascarbon source  d.   Originally: of or relating to carbon metabolism in organisms, and the cycling of carbon compounds in natural ecosystems, to which the photosynthetic fixation of carbon dioxide is central; (in later use also) of or relating to carbon compounds in the atmosphere as associated with climate change (cf. sense  1c); as  carbon assimilation,  carbon budget,  carbon economy,  carbon source,  carbon storage, etc.ⓘ ΚΠ 1890    Polit. Sci. Q. 5 566  				Man, the carbon-source, and the cabbage, the oxygen producer, typify two poles of an economic order. 1916    Sci. Monthly Sept. 294  				With the simplest bacteria which live directly on the lifeless world we find that most of the fundamental chemical energies of the living world are already established, namely..the protein and carbon storage, the primary food supply of the living world. a1933    J. A. Thomson Biol. for Everyman 		(1934)	 II. 1204  				The discovery of the process of carbon assimilation (also called photosynthesis)..is an interesting chapter in the history of science. 1957    Bot. Gaz. 121 31/1  				A consideration of the carbon economy for the highly efficient utilization of CO2 by these plants. 1967    Water Res. 1 147  				The carbon budget concept: a quantitative measure of trophic state. 1989    S. H. Schneider Global Warming 		(1990)	 vi. 178  				Spruce, fir, and hardwood forests would be replaced ‘by a stunted pine-oak forest of much lower carbon storage’. 1993    N.Y. Times 8 June  c4/1  				For years, scientists concerned about the environmental effects of burning fossil fuels have tried to balance the global carbon budget. 2002    Kew Winter 4/1  				The invasive trees and shrubs that are encroaching onto many areas of natural grassland were thought to be a particularly important carbon sink, helping to balance the nation's ‘carbon budget’. 2002    BusinessWeek 4 Nov. 12/4  				Energy and environment broker Natsource is building a carbon ‘bank’. Companies would deposit emissions cuts and get credit for them under various trading plans. < as lemmas  | 
	
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