%0 Journal Article
%T Life cycle assessment of fertilization in corn production in different regions of China<br>我国不同区域玉米施肥的生命周期评价
%A LI Zhenyu
%A WANG Xu
%A WEI Jing
%A MA Wenqi
%A <br>李贞宇
%A 王旭
%A 魏静
%A 马文奇
%J 环境科学学报
%D 2010
%I 
%X In this paper, individual and integrated environmental impact indexes of corn fertilization in different ecological districts including Jilin, Shaanxi, Henan, Hunan and Guangxi provinces were investigated using Life Cycle Assessment (LCA). For simplicity, emissions and consumed resources during corn production are calculated on the basis of producing 1 ton of corn grain. The results show that the integrated environmental indexes in these five provinces are in the order of Guangxi (0.315), Hunan (0.309), Henan (0.273), Shaanxi (0.238) and (Jilin 0.183). For the individual environmental impacts, the order is as follows: eutrophication > acidification > global warming > land use > energy depletion. In addition, the variance coefficients of integrated environmental indexes between farms in these five provinces largely range from 41.2% (i.e. Jilin) to 81.6% (i.e. Hunan). NH3 volatilization from fertilization has been identified to be the most important contributor to eutrophication and acidification, and a change of fertilization method from top-dressing to deep application would lead a decrease of 8.5%~34.1% in environmental indexes. In conclusion, under the current conditions, the corn production in Northeast China is associated with a lower environmental impact, and eutrophication is the most important environmental impact. Improvement of fertilization method to decrease NH3 volatilization is the most effective approach to reduce environmental influence.
%K Life Cycle Assessment
%K Resource consumption
%K Emissions
%K Fertilization
%K Corn<br>生命周期评价
%K 资源消耗
%K 环境排放
%K 施肥
%K 玉米
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=A7CA601309F5FED03C078BCE383971DC&jid=03A55E61A8750ACAC6AF81EF9E2AC838&aid=462ABC59A9BBA4D671FA197F2E22B711&yid=140ECF96957D60B2&vid=340AC2BF8E7AB4FD&iid=9CF7A0430CBB2DFD&sid=E1E3BF53C3583450&eid=245C5ED8B3BAFA8A&journal_id=0253-2468&journal_name=环境科学学报&referenced_num=1&reference_num=61