气候变化领域集成服务门户(CCPortal): Effect of sodium amendments on the home-field advantage of litter decomposition in a subtropical forest of China

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DOI	10.1016/j.foreco.2020.118148
	Effect of sodium amendments on the home-field advantage of litter decomposition in a subtropical forest of China
	Ji Y.; Li Q.; Tian K.; Yang J.; Hu H.; Yuan L.; Lu W.; Yao B.; Tian X.
发表日期	2020
ISSN	0378-1127
卷号	468
英文摘要	Sodium (Na) can affect ecosystem function by altering soil fauna and microbial community composition and abundance. Sodium's potential influences on plant-soil interactions, such as home-field advantage (HFA: enhanced decomposition in a home environment compared to an away environment), in relation to litter decomposition remains unclear. To fill this knowledge gap, we conducted a ten-month reciprocal litter transplant field experiment with Na amendments (0.005% and 0.5% water solution of NaCl) in both a subtropical broad-leaved forest dominated by Quercus variabilis (oak) and a coniferous artificial forest planted by Pinus massoniana (pine) in China. Litterbags with different mesh sizes were used to partition the impact of soil biota groups on the HFA. The results showed that 0.005% Na amendment facilitated litter decomposition as well as carbon (C) and nitrogen (N) mineralization by enhancing soil extracellular enzyme activity and soil faunal abundance. But 0.5% Na amendment inhibited litter decomposition in fine-mesh litterbags by decreasing microbial activity, and promoted litter decomposition in coarse-mesh litterbags by attracting more soil fauna. In the control plots, we observed a negative HFA in coarse-mesh litterbags (with most soil fauna and all soil microorganisms), and a positive HFA in fine-mesh litterbags (with complete exclusion of meso-and macrofauna). Whether the HFA was positive or negative (i.e. regardless of the direction of the HFA), Na amendments significantly decreased the magnitude of HFA by increasing the similarity of microbial community composition between the incubation fields (‘home’ vs. ‘away’) and decreasing selective foraging of soil fauna for different leaf litters. In sum, our results indicate that anthropogenic Na enrichment can decrease the effects of HFA through the modification of soil microbial and faunal communities, and thereby affect C sequestration and N cycling in subtropical forests. © 2020 Elsevier B.V.
关键词	Animals Enzyme activity Forestry Mesh generation Microorganisms Sodium chloride Soils Tropics Broad-leaved forests Ecosystem functions Extracellular enzyme activity Litter decomposition Microbial activities Microbial community composition Plant-soil interactions Soil micro-organisms Sodium biomineralization broad-leaved forest community composition decomposition ecosystem function leaf litter microbial activity microbial community soil biota soil fauna soil microorganism subtropical region tropical forest Animals Forestry Mesh Microorganisms Sodium Chloride Soil Tropics China Pinus massoniana Quercus variabilis
语种	英语
来源机构	Forest Ecology and Management
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/132794
推荐引用方式 GB/T 7714	Ji Y.,Li Q.,Tian K.,et al. Effect of sodium amendments on the home-field advantage of litter decomposition in a subtropical forest of China[J]. Forest Ecology and Management,2020,468.
APA	Ji Y..,Li Q..,Tian K..,Yang J..,Hu H..,...&Tian X..(2020).Effect of sodium amendments on the home-field advantage of litter decomposition in a subtropical forest of China.,468.
MLA	Ji Y.,et al."Effect of sodium amendments on the home-field advantage of litter decomposition in a subtropical forest of China".468(2020).