Effects of belowground litter addition, increased precipitation and clipping on soil carbon and nitrogen mineralization in a temperate steppe

doi:10.5194/bg-10-7361-2013

	Effects of belowground litter addition, increased precipitation and clipping on soil carbon and nitrogen mineralization in a temperate steppe
	Ma, L.; Guo, C.; Xin, X.; Yuan, S.; Wang, R.
	2013
发表期刊	BIOGEOSCIENCES
ISSN	1726-4170
卷号	10 期号:11 页码:7361-7372
摘要	Soil carbon (C) and nitrogen (N) cycling are sensitive to changes in environmental factors and play critical roles in the responses of terrestrial ecosystems to natural and anthropogenic perturbations. This study was conducted to quantify the effects of belowground particulate litter (BPL) addition, increased precipitation and their interactions on soil C and N mineralization in two adjacent sites where belowground photosynthate allocation was manipulated through vegetation clipping in a temperate steppe of northeastern China from 2010 to 2011. The results show that BPL addition significantly increase soil C mineralization rate (CMR) and net N mineralization rate (NMR). Although increased precipitation-induced enhancement of soil CMR essentially ceased after the first year, stimulation of soil NMR and net nitrification rate continued into the second year. Clipping only marginally decreased soil CMR and NMR during the two years. There were significant synergistic interactions between BPL addition (and increased precipitation) and clipping on soil CMR and NMR, likely to reflect shifts in soil microbial community structure and a decrease in arbuscular mycorrhizal fungi biomass due to the reduction of belowground photosynthate allocation. These results highlight the importance of plants in mediating the responses of soil C and N mineralization to potentially increased BPL and precipitation by controlling belowground photosynthate allocation in the temperate steppe.
学科领域	Ecology ; Geosciences, Multidisciplinary
DOI	10.5194/bg-10-7361-2013
收录类别	SCI
语种	英语
WOS关键词	ARBUSCULAR MYCORRHIZAL FUNGI ; NET N MINERALIZATION ; MICROBIAL COMMUNITIES ; ORGANIC-MATTER ; FOREST SOIL ; GRASSLAND ; BIOMASS ; SATURATION ; BACTERIAL ; DYNAMICS
WOS研究方向	Science Citation Index Expanded (SCI-EXPANDED)
WOS记录号	WOS:000327814700040
出版者	COPERNICUS GESELLSCHAFT MBH
文献子类	Article
出版地	GOTTINGEN
EISSN	1726-4189
资助机构	Natural Science Foundation of China(National Natural Science Foundation of China (NSFC))
作品OA属性	Green Submitted, gold
引用统计	被引频次：27[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/2S10CLM1/27924
专题	植被与环境变化国家重点实验室
作者单位	1.[Ma, L. 2.Guo, C. 3.Yuan, S. 4.Wang, R.] Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China 5.[Guo, C. 6.Yuan, S.] Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China 7.[Xin, X.] Chinese Acad Agr Sci, Inst Agr Resources & Reg Planning, Beijing 100081, Peoples R China
推荐引用方式 GB/T 7714	Ma, L.,Guo, C.,Xin, X.,et al. Effects of belowground litter addition, increased precipitation and clipping on soil carbon and nitrogen mineralization in a temperate steppe[J]. BIOGEOSCIENCES,2013,10(11):7361-7372.
APA	Ma, L.,Guo, C.,Xin, X.,Yuan, S.,&Wang, R..(2013).Effects of belowground litter addition, increased precipitation and clipping on soil carbon and nitrogen mineralization in a temperate steppe.BIOGEOSCIENCES,10(11),7361-7372.
MLA	Ma, L.,et al."Effects of belowground litter addition, increased precipitation and clipping on soil carbon and nitrogen mineralization in a temperate steppe".BIOGEOSCIENCES 10.11(2013):7361-7372.

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