Belowground carbon responses to experimental warming regulated by soil moisture change in an alpine ecosystem of the Qinghai-Tibet Plateau (SCI)

CORC > 寒区旱区环境与工程研究所 > 中科院寒区旱区环境与工程研究所（未分类） > 期刊论文

	Belowground carbon responses to experimental warming regulated by soil moisture change in an alpine ecosystem of the Qinghai-Tibet Plateau (SCI)
	Xue X.; Peng F.; You Q. G.; Xu M. H.; Dong S. Y.
刊名	Ecology and Evolution
	2015
卷号	5 期号:18 页码:4063-4078
英文摘要	Recent studies found that the largest uncertainties in the response of the terrestrial carbon cycle to climate change might come from changes in soil moisture under the elevation of temperature. Warming-induced change in soil moisture and its level of influence on terrestrial ecosystems are mostly determined by climate, soil, and vegetation type and their sensitivity to temperature and moisture. Here, we present the results from a warming experiment of an alpine ecosystem conducted in the permafrost region of the Qinghai-Tibet Plateau using infrared heaters. Our results show that 3years of warming treatments significantly elevated soil temperature at 0-100cm depth, decreased soil moisture at 10cm depth, and increased soil moisture at 40-100cm depth. In contrast to the findings of previous research, experimental warming did not significantly affect NH4+-N, NO3--N, and heterotrophic respiration, but stimulated the growth of plants and significantly increased root biomass at 30-50cm depth. This led to increased soil organic carbon, total nitrogen, and liable carbon at 30-50cm depth, and increased autotrophic respiration of plants. Analysis shows that experimental warming influenced deeper root production via redistributed soil moisture, which favors the accumulation of belowground carbon, but did not significantly affected the decomposition of soil organic carbon. Our findings suggest that future climate change studies need to take greater consideration of changes in the hydrological cycle and the local ecosystem characteristics. The results of our study will aid in understanding the response of terrestrial ecosystems to climate change and provide the regional case for global ecosystem models.
收录类别	SCI
语种	英语
内容类型	期刊论文
源URL	[http://ir.casnw.net/handle/362004/27515]
专题	寒区旱区环境与工程研究所_中科院寒区旱区环境与工程研究所（未分类）_期刊论文
推荐引用方式 GB/T 7714	Xue X.,Peng F.,You Q. G.,et al. Belowground carbon responses to experimental warming regulated by soil moisture change in an alpine ecosystem of the Qinghai-Tibet Plateau (SCI)[J]. Ecology and Evolution,2015,5(18):4063-4078.
APA	Xue X.,Peng F.,You Q. G.,Xu M. H.,&Dong S. Y..(2015).Belowground carbon responses to experimental warming regulated by soil moisture change in an alpine ecosystem of the Qinghai-Tibet Plateau (SCI).Ecology and Evolution,5(18),4063-4078.
MLA	Xue X.,et al."Belowground carbon responses to experimental warming regulated by soil moisture change in an alpine ecosystem of the Qinghai-Tibet Plateau (SCI)".Ecology and Evolution 5.18(2015):4063-4078.