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首页> 外文会议>International symposium on the measurement of toxic and related air pollutants >Measurement and Modeling of Nitric Oxide Emissions from Biosolid Amended Soils
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Measurement and Modeling of Nitric Oxide Emissions from Biosolid Amended Soils

机译：生物固体改良土壤中一氧化氮排放的测量和建模

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Land spreading nitrogen-rich municipal biosolids to human food and non-food chain landrnis a practice followed throughout the US. This practice may lead to the recovery and utilizationrnof the nitrogen by vegetation, but it may also lead to emissions of biogenic nitric oxide (NO),rnwhich may enhance ozone pollution in the lower levels of the troposphere. Recent globalrnestimates of biogenic NO emissions from soils are cited in the literature, which are based onrnfield measurements of NO emission from various agricultural and non-agricultural fields.rnHowever, biogenic emissions of NO from biosolid-amended soils are lacking. Utilizing a stateof-rnthe-art mobile laboratory and a dynamic flow-through chamber system, in-situ concentrationsrnof nitric oxide (NO) were measured during the summer, winter and spring of 1999/2000 fromrnagricultural soils amended with biosolids. The field site was sampled prior to and immediatelyrnfollowing applications of the biosolids. The average NO flux for summer, winter and springrnwere 57.8 ± 34.6 ng NO-N m~(-2) s~(-1), 3.62 ± 3.93 ng NO-N m~(-2) s~(-1) and 59.05 ± 54.21 ng NO-N m~(-2) s~(-1) respectively. NO emissions responded to changes in soil temperature where daily maximumsrnin NO emissions coincided with daily maximums in soil temperatures.
机译：在美国各地采用将富含氮的市政生物固体土地扩散到人类食物和非食物链地鼠的做法。这种做法可能导致植被对氮的回收和利用，但也可能导致生物型一氧化氮（NO）的排放，这可能会增加对流层低层的臭氧污染。文献中引用了近期全球土壤生物NO排放的最新估计，这是基于各种农业和非农业领域NO排放的实地测量得出的。然而，缺乏经过生物固体改良的土壤中NO的生物源排放。利用最先进的移动实验室和动态流通室系统，在1999/2000夏季，冬季和春季期间，从经过生物固体改良的农田土壤中测量了一氧化氮（NO）的原位浓度。在施用生物固体之前和之后立即对现场进行采样。夏季，冬季和春季的平均NO通量为57.8±34.6 ng NO-N m〜（-2）s〜（-1），3.62±3.93 ng NO-N m〜（-2）s〜（-1）和分别为59.05±54.21 ng NO-N m〜（-2）s〜（-1）。 NO排放量对土壤温度的变化做出响应，在土壤中，每天的最高排放量与土壤温度的每天最高值一致。

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