Effects of livestock grazing on soil nitrogen mineralization on Hulunber meadow steppe, China

doi:10.17221/445/2015-PSE

CORC > 植物研究所 > 中国科学院植物研究所 > 植被与环境变化国家重点实验室

	Effects of livestock grazing on soil nitrogen mineralization on Hulunber meadow steppe, China
	Yan, R.; Yang, G.; Chen, B.; Wang, X.; Yan, Y.; Xin, X.; Li, L.; Zhu, X.; Bai, K.; Rong, Y.
刊名	PLANT SOIL AND ENVIRONMENT
	2016
卷号	62 期号:5 页码:202-209
关键词	inorganic nitrogen terrestrial ecosystem climate grazing intensity nutrient cycling environmental factors
ISSN号	1214-1178
DOI	10.17221/445/2015-PSE
文献子类	Article
英文摘要	Soil nitrogen (N) cycling is an important factor in terrestrial ecosystems, including grasslands. Understanding the effects of grazing on nitrogen cycling in grassland ecosystems is critical for better management and for improving knowledge of the mechanisms underlying grassland degradation and can provide basic information for sustainable development in grassland ecosystems. In this study, in situ incubation in intact soil cores was used to measure seasonal changes in soil nitrogen mineralization and nitrification in the meadow steppe of the Hulunber grasslands of northeastern China. Soil plots were subjected to varying intensities of cattle grazing, and soil characteristics including several aspects of the nitrogen cycle were analysed. The findings demonstrate that soil inorganic N pools and nitrogen mineralization peaked in August and that moderate grazing intensity produced higher seasonal mean net N mineralization (A(min)); net nitrogen mineralization rate (R-min); net ammonification rate (R-amm) and net nitrification rate (R-nit). Seasonal mean net mineralization rate was increased by 6-15% in the lightly and moderately grazed plots (0.34-0.46 AU cow/ha) and by 4-5% in the heavily grazed plots (0.69-0.92 AU cow/ha). Also it was found that soil moisture was significantly positively correlated with inorganic N, A(min), R-amm and R-min and significantly negatively correlated with R-nit, while soil temperature exhibited the opposite effect. The obtained results demonstrated net nitrogen mineralization and ammonium rates, which were strongly linked to grazing intensity, soil temperature and soil moisture.
学科主题	Agronomy
电子版国际标准刊号	1805-9368
出版地	PRAGUE
WOS关键词	ECOSYSTEM PROCESSES ; N MINERALIZATION ; GRASSLAND ; NITRIFICATION ; TEMPERATURE ; INTENSITY
WOS研究方向	Science Citation Index Expanded (SCI-EXPANDED)
语种	英语
出版者	CZECH ACADEMY AGRICULTURAL SCIENCES
WOS记录号	WOS:000377633900002
资助机构	Central Public Welfare Scientific Research Institutes [402-11] ; National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [41201199] ; National High-tech Research and Development ProjectsNational High Technology Research and Development Program of China [863, 2012AA102003-4] ; Chinese Ministry of AgricultureMinistry of Agriculture, China [CARS-35-11]
内容类型	期刊论文
源URL	[http://ir.ibcas.ac.cn/handle/2S10CLM1/25110]
专题	植被与环境变化国家重点实验室
作者单位	1.Xin, X. 2.Hou, L.] China Agr Univ, Dept Grassland Sci, Beijing 100094, Peoples R China 3.Zhu, X. 4.[Rong, Y. 5.[Li, L.] Chinese Acad Sci, State Key Lab Vegetat & Environm Change, Inst Bot, Beijing, Peoples R China 6.Bai, K.] Chinese Acad Agr Sci, Inst Agr Resources & Reg Planning, Beijing 100193, Peoples R China 7.[Yan, R. 8.Yang, G. 9.Chen, B. 10.Wang, X.
推荐引用方式 GB/T 7714	Yan, R.,Yang, G.,Chen, B.,et al. Effects of livestock grazing on soil nitrogen mineralization on Hulunber meadow steppe, China[J]. PLANT SOIL AND ENVIRONMENT,2016,62(5):202-209.
APA	Yan, R..,Yang, G..,Chen, B..,Wang, X..,Yan, Y..,...&Hou, L..(2016).Effects of livestock grazing on soil nitrogen mineralization on Hulunber meadow steppe, China.PLANT SOIL AND ENVIRONMENT,62(5),202-209.
MLA	Yan, R.,et al."Effects of livestock grazing on soil nitrogen mineralization on Hulunber meadow steppe, China".PLANT SOIL AND ENVIRONMENT 62.5(2016):202-209.