Effects of cultivation on N2O emission and seasonal quantitative variations of related microbes in a temperate grassland soil

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	Effects of cultivation on N2O emission and seasonal quantitative variations of related microbes in a temperate grassland soil
	Huang, B; Chen, GX; Huang, B, Chinese Acad Sci, Inst Appl Ecol, Lab Terr Ecol Proc, Shenyang 110016, Peoples R China
刊名	JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA
	2001
卷号	13 期号:3 页码:376-379
关键词	Grassland Cultivation N2o Emission Nitrogen Fertilizer Microbes
ISSN号	1001-0742
英文摘要	Laboratory and in situ experiments were done to investigate the influences of cultivation on temperate semi-arid grassland (for 17 years spring wheat planted once every two years without fertilization) on soil N2O emission and quantitative variations of related soil microbes. In the laboratory (25degreesC and soil moisture 18%), cultivation increased soil transformations of fertilizer nitrogen (100 mug N/g as NaNO3, urea, or as ores with dicyandiamide 1 mug N/g). The N2O emissions from the cultivated and uncultivated soils with or without nitrogen additions were relatively low, and mainly originated from the nitrification. The soil N2O emission due to cultivation decreased somewhat upon no fertilization or NaNO3 addition, but significantly upon urea addition. The role of dicyandiamide as nitrification inhibitor was only considerable in the cultivated soil, and had small influence on decreasing N(2)0 emission in the two soils. The influence of cultivation on soil N(2)0 emission was also reflected by the number variations of microbes related with soil nitrogen transformation in the two soils. Compared to the uncultivated grassland, in situ ammonifiers and denitrifiers in the cultivated grassland quantitatively averagely increased, and aerobic no-symbiotic azotobacters were quantitatively similar, leading to the continued decrease of organic matter content and the decrease of N2O emission from the cultivated grassland soil.
学科主题	Environmental Sciences
语种	英语
WOS记录号	WOS:000174780500022
公开日期	2011-09-23
内容类型	期刊论文
源URL	[http://210.72.129.5/handle/321005/55495]
专题	沈阳应用生态研究所_沈阳应用生态研究所
通讯作者	Huang, B, Chinese Acad Sci, Inst Appl Ecol, Lab Terr Ecol Proc, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Huang, B,Chen, GX,Huang, B, Chinese Acad Sci, Inst Appl Ecol, Lab Terr Ecol Proc, Shenyang 110016, Peoples R China. Effects of cultivation on N2O emission and seasonal quantitative variations of related microbes in a temperate grassland soil[J]. JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA,2001,13(3):376-379.
APA	Huang, B,Chen, GX,&Huang, B, Chinese Acad Sci, Inst Appl Ecol, Lab Terr Ecol Proc, Shenyang 110016, Peoples R China.(2001).Effects of cultivation on N2O emission and seasonal quantitative variations of related microbes in a temperate grassland soil.JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA,13(3),376-379.
MLA	Huang, B,et al."Effects of cultivation on N2O emission and seasonal quantitative variations of related microbes in a temperate grassland soil".JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA 13.3(2001):376-379.