QQ客服 官方微博 反馈留言

	Nitrogen mobilization in the United States of America and the People's Republic of China
	Galloway, JN; Dianwu, Z; Thomson, VE; Chang, LH
	1996
会议名称	Joint 8th CACGP/2nd IGAC Conference on Global Atmospheric Chemistry
会议日期	SEP 05-09, 1994
会议地点	FUJI, JAPAN
关键词	ammonia nitrogen oxides nitrous oxide fertilizer fossil-fuel combustion agriculture biogeochemical cycles
英文摘要	Through fossil-fuel combustion, commercial fertilizer production, and legume and rice cultivation, humans are mobilizing nitrogen (N) at scales that exceed natural terrestrial rates. Globally, approximate to 140 Tg of reactive N are mobilized each year; activities in the People's Republic of China (China) and the United States account for approximately 30% of this reactive N. This paper compares N mobilization rates and nitrogen oxides (NOx) and ammonia (NH3) atmospheric emission rates for China and the United States over the last few decades and projects the rates to the year 2020. We have estimated that the United States and China currently mobilize about 20 and 25 Tg N yr(-1), respectively. In the United States, commercial-fertilizer use accounts for about 50% of the annual total; in China, it accounts for about 80%. N emissions to the United States atmosphere are dominated by NOx. China's N emissions are dominated by NH3 from fertilizer use and domestic animal waste. If recent trends continue, we have projected that by 2020 N mobilization in the United States will differ little from current levels although N mobilization in China will increase significantly because of increased fertilizer use and fossil-fuel combustion.
ISSN号	1352-2310
内容类型	会议论文
源URL	[http://ir.rcees.ac.cn/handle/311016/24852]
专题	生态环境研究中心_城市与区域生态国家重点实验室
推荐引用方式 GB/T 7714	Galloway, JN,Dianwu, Z,Thomson, VE,et al. Nitrogen mobilization in the United States of America and the People's Republic of China[C]. 见:Joint 8th CACGP/2nd IGAC Conference on Global Atmospheric Chemistry. FUJI, JAPAN. SEP 05-09, 1994.

个性服务

查看访问统计

相关权益政策

暂无数据

收藏/分享

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。