Arbuscular mycorrhizal fungi regulate soil respiration and its response to precipitation change in a semiarid steppe

doi:10.1038/srep19990

	Arbuscular mycorrhizal fungi regulate soil respiration and its response to precipitation change in a semiarid steppe
	Han, Xingguo 2,3; Zhang, Bingwei 1,2; Li, Shan 1,2; Chen, Shiping 2; Ren, Tingting 2; Yang, Zhiqiang 1,2; Zhao, Hanlin 2; Liang, Yu 2
刊名	SCIENTIFIC REPORTS
	2016-01-28
卷号	6
ISSN号	2045-2322
DOI	10.1038/srep19990
英文摘要	Arbuscular mycorrhizal fungi (AMF) are critical links in plant-soil continuum and play a critical role in soil carbon cycles. Soil respiration, one of the largest carbon fluxes in global carbon cycle, is sensitive to precipitation change in semiarid ecosystems. In this study, a field experiment with fungicide application and water addition was conducted during 2010-2013 in a semiarid steppe in Inner Mongolia, China, and soil respiration was continuously measured to investigate the influences of AMF on soil respiration under different precipitation regimes. Results showed that soil respiration was promoted by water addition treatment especially during drought seasons, which induced a nonlinear response of soil respiration to precipitation change. Fungicide application suppressed AMF root colonization without impacts on soil microbes. AMF suppression treatment accelerated soil respiration with 2.7, 28.5 and 37.6 g Cm-2 across three seasons, which were mainly caused by the enhanced heterotrophic component. A steeper response of soil respiration rate to precipitation was found under fungicide application treatments, suggesting a greater dampening effect of AMF on soil carbon release as water availability increased. Our study highlighted the importance of AMF on soil carbon stabilization and sequestration in semiarid steppe ecosystems especially during wet seasons.
WOS研究方向	Science & Technology - Other Topics
语种	英语
出版者	NATURE PUBLISHING GROUP
WOS记录号	WOS:000368777500003
内容类型	期刊论文
源URL	[http://210.72.129.5/handle/321005/122405]
专题	中国科学院沈阳应用生态研究所
通讯作者	Chen, Shiping; Liang, Yu
作者单位	1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China 3.Chinese Acad Sci, Inst Appl Ecol, State Key Lab Forest & Soil Ecol, Shenyang 110164, Peoples R China
推荐引用方式 GB/T 7714	Han, Xingguo,Zhang, Bingwei,Li, Shan,et al. Arbuscular mycorrhizal fungi regulate soil respiration and its response to precipitation change in a semiarid steppe[J]. SCIENTIFIC REPORTS,2016,6.
APA	Han, Xingguo.,Zhang, Bingwei.,Li, Shan.,Chen, Shiping.,Ren, Tingting.,...&Liang, Yu.(2016).Arbuscular mycorrhizal fungi regulate soil respiration and its response to precipitation change in a semiarid steppe.SCIENTIFIC REPORTS,6.
MLA	Han, Xingguo,et al."Arbuscular mycorrhizal fungi regulate soil respiration and its response to precipitation change in a semiarid steppe".SCIENTIFIC REPORTS 6(2016).