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- W2376298797 abstract "Stable isotopes of CO_2 can reveal much information of photosynthesis and respiration,which contributes to the understanding of the carbon cycle between ecosystem and environment.Here,using the data of CO_2 concentration and its stable isotope measurements,after analyzing δ~(13)C and δ~(18)O,it is found that δ~(13)C and δ~(18)O have the similar temporally and spatially distributive characters.i.e δ~(13)C and δ~(18)O ratioes obviously vary with height,generally,the heavier/lighter isotope ratio is higher at the upper/bottom layer of canopy;and temporally,δ~(13)C and δ~(18)O ratioes are highest from afternoon to sunset,and lower before dawn,with the lowest ratio at the time when air is stable and the CO_2 from the respiration of vegetation and soil reaches the biggest accumulation amount.Finally,by analyzing the relation between δ~(13)C,δ~(18)O and CO_2 using the Keeling Plot,and discussing the contribution of ecosystem source and sink to δ~(13)C and δ~(18)O,it is found that δ~(13)C is mainly affected by the concentration of CO_2,but δ~(18)O is impacted by many factors,expect the concentration of CO_2,air humidity is also an important factor." @default.
- W2376298797 created "2016-06-24" @default.
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- W2376298797 date "2006-01-01" @default.
- W2376298797 modified "2023-09-26" @default.
- W2376298797 title "Analysis on Stable δ ~(13)C and δ~(18)O of CO_2 over the Boreal Black Spruce" @default.
- W2376298797 hasPublicationYear "2006" @default.
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