Land spreading nitrogen-rich municipal biosolids to human food and non-food chain land is a practice followed throughout the US. This practice may lead to the recovery and utilization of the nitrogen by vegetation, but it may also lead to emissions of biogenic nitric oxide (NO), which may enhance ozone pollution in the lower levels of the troposphere. Recent global estimates of biogenic NO emissions from soils are cited in the literature, which are based on field measurements of NO emission from various agricultural and non-agricultural fields. However, biogenic emissions of NO from biosolid-amended soils are lacking. Utilizing a stateof- the-art mobile laboratory and a dynamic flow-through chamber system, in-situ concentrations of nitric oxide (NO) were measured during the summer, winter and spring of 1999/2000 from agricultural soils amended with biosolids. The field site was sampled prior to and immediately following applications of the biosolids. The average NO flux for summer, winter and spring were 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 maximums in NO emissions coincided with daily maximums in soil temperatures.
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机译：将富含氮的市政生物杀死的土地蔓延到人类食物和非食物链土地上是遵循美国的练习。这种做法可能导致植被的氮气的恢复和利用，但也可能导致生物发作一氧化氮（NO）的排放，这可能会在对流层的较低水平中增强臭氧污染。文献中引用了最近生物生物的全球估计，这些估计没有来自土壤的排放，这是基于各种农业和非农业领域没有排放的现场测量。然而，缺乏生物糖修正的土壤的生物生成排放。在夏季，1999/2000年夏季，冬季和春季，从夏季，冬季和春季，利用艺术移动实验室和动态流通腔室系统，在夏季，冬季和1999/2000年春季，1999/20000年春季升级为生物溶解。在Biosolids施用之前并立即进行对现场遗址进行取样。夏季的平均助焊剂，冬季和春季为57.8±34.6 ng no-n m〜（-2）s〜（-1），3.62±3.93 ng no-n m〜（-2）s〜（-1）分别为59.05±54.21 ng no-n m〜（-2）s〜（-1）。没有排放对土壤温度的变化作出反应，其中每日最大值在没有排放中的最大值与土壤温度的每日最大值相吻合。
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