干旱区生态环境知识资源中心(Arid): 江西鹰潭典型丘陵农业区氮湿沉降的动态变化

Arid

	江西鹰潭典型丘陵农业区氮湿沉降的动态变化
其他题名	Dynamic changes of wet nitrogen deposition in a typical hilly agricultural area in Yingtan,Jiangxi
	孙本华 1; 胡正义 2; 吕家珑 1; 周丽娜 2; 徐成凯 2
ISSN	1671-9387
出版年	2006
卷号	34 期号:10 页码:118-122
中文摘要	于2003-02～2004-01,采用自动降雨收集器结合室内化学分析方法,研究了江西鹰潭红壤丘陵农业区降水中NH+4-N和NO-3-N沉降的动态变化,并与同期欧洲EMEP和美国NADP监测降水中的NH+4-N和NO-3-N沉降的动态变化进行了比较.结果发现,本研究区域降水中不同月份的NH+4-N,NO-3-N含量及沉降量均变异较大,各形态氮含量和沉降量的极值出现的月份基本同步,表现为春、冬季较高,夏、秋季较低;研究区域NH+4-N,NO-3-N和无机氮的平均含量分别为0.63,0.43和1.06 mg/L,分别是同期欧洲降水中对应形态氮平均含量的1.5,1.1和1.3倍,是同期美国降水中对应形态氮平均含量的2.7,2.0和2.4倍;低于同期欧洲降水中对应形态氮含量的最大值,与同期美国降水中对应形态氮含量的最大值相当;降水中NH+4-N,NO-3-N和无机氮的年沉降量分别为7.15,4.85和12.00 kg/hm2,降水中无机氮的年沉降量低于同期欧洲的最大值,与同期美国的最大值相当,但远高于两区域的平均值;降水中NH+4-N沉降量占无机氮沉降量的比例为60%,高于同期欧洲和美国的平均水平(52.2%和49.6%).本研究结果表明,江西鹰潭红壤丘陵农业区氮湿沉降量较大,其对土壤、植被以及水体等的影响应引起关注.
英文摘要	The dynamic changes of nitrogen deposition of precipitation was monitored at the typical hilly area of red soil in Yingtan,Jiangxi by automatic precipitation collector combined with lab analysis from Feb. 2003 to Jan. 2004,arid the results were compared with data from EMEP and NADP at the same period. The results showed that the variation of the monthly average concentration and monthly deposition amounts of NH^-N.NOa"N and inorganic N were much greater. The extremes of them appeared almost synchronally, and behaved much higher in spring and winter than in summer and autumn. The annual aver?age concentrations of NH.^-N,NO:1 -N and inorganic N were 0. 63,0. 43 and 1. 06 mg/L respectively, which were 1. 5,1. 1 and 1. 3 times the averages of Europe,but lower than the maxima of Europe corre?spondingly, and were 2. 7,2. 0 and 2. 4 times the averages of USA,but almost equal to the maxima of USA correspondingly. The deposition amounts of NH4’ -N,NO3 -N and total mineral nitrogen were 7. 15,4. 85 and 12. 00 kg/hm2 respectively. The total annual N deposition in precipitation was lower than the maximum in Europe,and almost equal to the maximum in USA,but much higher than the averages of these two ar?eas. The contribution of NHf~N was 60% in total inorganic N deposition,which was a little higher than the averages of Europe and USA (52% and 49. 6%). The N deposition was comparatively high in this area,and its effects on soil .vegetation and water should be concerned.
中文关键词	江西红壤丘陵农业区 ; 氮湿沉降 ; 降水监测
英文关键词	agricultural area at the typical hilly of red soil in Jiangxi wet nitrogen deposition precipitation monitoring
语种	中文
国家	中国
收录类别	CSCD
WOS类目	ENVIRONMENTAL SCIENCES
WOS研究方向	Environmental Sciences & Ecology
CSCD记录号	CSCD:2576946
来源机构	西北农林科技大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/220268
作者单位	1.西北农林科技大学,资源环境学院, 杨凌, 陕西 712100, 中国; 2.中国科学院,南京土壤研究所, 土壤与农业可持续发展国家重点实验室, 南京, 江苏 210008, 中国
推荐引用方式 GB/T 7714	孙本华,胡正义,吕家珑,等. 江西鹰潭典型丘陵农业区氮湿沉降的动态变化[J]. 西北农林科技大学,2006,34(10):118-122.
APA	孙本华,胡正义,吕家珑,周丽娜,&徐成凯.(2006).江西鹰潭典型丘陵农业区氮湿沉降的动态变化.,34(10),118-122.
MLA	孙本华,et al."江西鹰潭典型丘陵农业区氮湿沉降的动态变化".34.10(2006):118-122.