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首页> 外文会议>25th Conference on Agricultural and Forest Meteorology and 12th Joint Conference on the Applications of Air Pollution Meteorology with Aamp;WMA and Fourth Symposium on the Urban Environment May 20-24, 2002 Norfolk, Virginia >AGRICULTURAL CANOPY AND SOIL CO_2 RELEASE AND PHOTOSYNTHETIC RECAPTURE
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AGRICULTURAL CANOPY AND SOIL CO_2 RELEASE AND PHOTOSYNTHETIC RECAPTURE

机译：农业冠层和土壤CO_2释放与光合捕获。

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摘要

Continuous eddy covariance measurements of CO_2 fluxes will underestimate the total C fixed in either a corn or soybean field. Thus eddy covariance alone cannot estimate the total carbon fixed by a canopy. The error is greater for a corn canopy than for a soybean canopy. In a corn canopy the error is approximately equal to the C fixed by the root mass. The most likely source of CO_2 for the biomass not measured by eddy covariance is from soil and root respiration.
机译：CO_2通量的连续涡动协方差测量将低估固定在玉米田或大豆田中的总碳。因此，仅涡旋协方差不能估算冠层固定的总碳。玉米冠层的误差大于大豆冠层的误差。在玉米冠层中，误差大约等于根质量所确定的C。未通过涡旋协方差测量的生物量最可能的CO_2来源是土壤和根系呼吸作用。

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