An inventory of nitric oxide emissions from soils in China.
An inventory of nitric oxide emissions from soils in China.
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DOI：
10.1016/j.envpol.2004.10.007
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发表时间：
2005-05
影响因子：
8.9
通讯作者：
Qin’geng Wang;Z. Han;Y. Higano
中科院分区：
文献类型：
--
作者：
Qin’geng Wang;Z. Han;Y. Higano
利用与土地利用类型、施肥率和土壤温度的经验关系对 NO 排放进行参数化。考虑了八种土地利用类型（包括四种耕地）。不同地区和作物的施肥率有所不同。选择1999年7月的典型夏季进行详细计算。 7月份N2O排放总量为141.1 Gg N，其中73.7%来自耕地，22.0%来自草地。在肥沃程度较高的华北平原，排放强度最高可达40 ng N m−2s−1 以上，全地平均为6.5 ng N m−2s−1。粗略估计年排放量为657 Gg N，约占全球排放总量（IPCC 2000年报告为5600 Gg N）的11.7%，约占中国人为排放量的12.5%。我们的结果与一些早期的发现进行了比较，并讨论了不确定性。
The emission of NO was parameterized using empirical relationships with landuse type, fertilization rate and soil temperature. Eight landuse types (including four arable lands) were considered. Fertilization rates were distinguished for different regions and crops. A typical summer period of July in 1999 was chosen for detailed calculations. The total NO emission in the July is 141.1 Gg N, with 73.7% from arable lands and 22.0% from grasslands. The highest emission intensity can be more than 40 ng N m−2s−1in the heavily fertilized North China Plain, and the average of the whole lands is 6.5 ng N m−2s−1. The annual emission was roughly estimated to be 657 Gg N, about 11.7% of the global total (5600 Gg N, reported by IPCC in 2000), and about 12.5% of the anthropogenic origin in China. Our results were compared with some earlier findings, and uncertainties were discussed.