Frequency and intensity of nitrogen addition alter soil inorganic sulfur fractions, but the effects vary with mowing management in a temperate steppe

doi:10.5194/bg-16-2891-2019

	Frequency and intensity of nitrogen addition alter soil inorganic sulfur fractions, but the effects vary with mowing management in a temperate steppe
	Li, Tianpeng ; Liu, Heyong 1; Wang, Ruzhen ; Lu, Xiao-Tao ; Yang, Junjie 2; Zhang, Yunhai2 ; He, Peng ; Wang, Zhirui ; Han, Xingguo2 ; Jiang, Yong
	2019
发表期刊	BIOGEOSCIENCES
ISSN	1726-4170
卷号	16 期号:14 页码:2891-2904
摘要	Sulfur (S) availability plays a vital role in driving functions of terrestrial ecosystems, which can be largely affected by soil inorganic S fractions and pool size. Enhanced nitrogen (N) input can significantly affect soil S availability, but it still remains largely unknown if the N effect varies with frequency of N addition and mowing management in grasslands. To investigate changes in the soil S pool and inorganic S fractions (soluble S, adsorbed S, available S, and insoluble S), we conducted a field experiment with different frequencies (two times per year vs. monthly additions per year) and intensities (i.e., 0, 1, 2, 3, 5, 10, 15, 20, and 50 g N m(-2) yr(-1)) of NH4NO3 addition and mowing (unmown vs. mown) over 6 years in a temperate grassland of northern China. Generally, N addition frequency, N intensity, and mowing significantly interacted with each other to affect most of the inorganic S fractions. Specifically, a significant increase in soluble S was only found at high N frequency with the increasing intensity of N addition. Increasing N addition intensity enhanced adsorbed S and available S concentrations at low N frequency in unmown plots; however, both fractions were significantly increased with N intensity at both N frequencies in mown plots. The high frequency of N addition increased the concentrations of adsorbed S and available S in comparison to the low frequency of N addition only in mown plots. Changes in soil S fractions were mainly related to soil pH, N availability, soil organic carbon (SOC), and plant S uptake. Our results suggested that N input could temporarily replenish soil-available S by promoting dissolution of soil-insoluble S with decreasing soil pH and mineralization of organic S due to increasing plant S uptake. However, the significant decrease in organic S and total S concentrations with N addition intensity in mown plots indicated that N addition together with biomass removal would eventually cause soil S depletion in this temperate grassland in the long term. Our results further indicated that using large and infrequent N additions to simulate N deposition can overestimate the main effects of N deposition and mowing management on soil S availability in semiarid grasslands.
学科领域	Ecology ; Geosciences, Multidisciplinary
DOI	10.5194/bg-16-2891-2019
收录类别	SCI
语种	英语
WOS关键词	PLANT ; DEPOSITION ; GRASSLAND ; SULFATE ; CARBON ; MINERALIZATION ; FERTILIZATION ; RESPONSES ; TRANSFORMATIONS ; ENRICHMENT
WOS研究方向	Environmental Sciences & Ecology ; Geology
WOS记录号	WOS:000477975300002
出版者	COPERNICUS GESELLSCHAFT MBH
文献子类	Article
出版地	GOTTINGEN
EISSN	1726-4189
资助机构	National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [31870441, 31770525, 31430016] ; National Key Research and Development Program of China [2016YFC0500707]
作者邮箱	ruzhenwang@iae.ac.cn ; jiangyong@iae.ac.cn
作品OA属性	gold, Green Submitted
引用统计	被引频次：5[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ibcas.ac.cn/handle/2S10CLM1/19695
专题	植被与环境变化国家重点实验室
作者单位	1.Chinese Acad Sci, Inst Appl Ecol, Shenyang 110016, Liaoning, Peoples R China 2.Shenyang Agr Univ, Coll Land & Environm, Shenyang 110866, Liaoning, Peoples R China 3.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China
推荐引用方式 GB/T 7714	Li, Tianpeng,Liu, Heyong,Wang, Ruzhen,et al. Frequency and intensity of nitrogen addition alter soil inorganic sulfur fractions, but the effects vary with mowing management in a temperate steppe[J]. BIOGEOSCIENCES,2019,16(14):2891-2904.
APA	Li, Tianpeng.,Liu, Heyong.,Wang, Ruzhen.,Lu, Xiao-Tao.,Yang, Junjie.,...&Jiang, Yong.(2019).Frequency and intensity of nitrogen addition alter soil inorganic sulfur fractions, but the effects vary with mowing management in a temperate steppe.BIOGEOSCIENCES,16(14),2891-2904.
MLA	Li, Tianpeng,et al."Frequency and intensity of nitrogen addition alter soil inorganic sulfur fractions, but the effects vary with mowing management in a temperate steppe".BIOGEOSCIENCES 16.14(2019):2891-2904.

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