干旱区生态环境知识资源中心(Arid): Effects of litter and root manipulations on soil carbon and nitrogen in a Schrenk's spruce (Picea schrenkiana) forest

Arid

DOI	10.1371/journal.pone.0247725
	Effects of litter and root manipulations on soil carbon and nitrogen in a Schrenk's spruce (Picea schrenkiana) forest
	Zhu, Haiqiang; Gong, Lu; Ding, Zhaolong; Li, Yuefeng
通讯作者	Gong, L (corresponding author), Xinjiang Univ, Coll Resources & Environm Sci, Urumqi, Peoples R China. ; Gong, L (corresponding author), Minist Educ, Key Lab Oasis Ecol, Urumqi, Peoples R China.
来源期刊	PLOS ONE
ISSN	1932-6203
出版年	2021
卷号	16 期号:2
英文摘要	Plant detritus represents the major source of soil carbon (C) and nitrogen (N), and changes in its quantity can influence below-ground biogeochemical processes in forests. However, we lack a mechanistic understanding of how above- and belowground detrital inputs affect soil C and N in mountain forests in an arid land. Here, we explored the effects of litter and root manipulations (control (CK), doubled litter input (DL), removal of litter (NL), root exclusion (NR), and a combination of litter removal and root exclusion (NI)) on soil C and N concentrations, enzyme activity and microbial biomass during a 2-year field experiment. We found that DL had no significant effect on soil total organic carbon (SOC) and total nitrogen (TN) but significantly increased soil dissolved organic carbon (DOC), microbial biomass C, N and inorganic N as well as soil cellulase, phosphatase and peroxidase activities. Conversely, NL and NR reduced soil C and N concentrations and enzyme activities. We also found an increase in the biomass of soil bacteria, fungi and actinomycetes in the DL treatment, while NL reduced the biomass of gram-positive bacteria, gram-negative bacteria and fungi by 5.15%, 17.50% and 14.17%, respectively. The NR decreased the biomass of these three taxonomic groups by 8.97%, 22.11% and 21.36%, respectively. Correlation analysis showed that soil biotic factors (enzyme activity and microbial biomass) and abiotic factors (soil moisture content) significantly controlled the change in soil C and N concentrations (P < 0.01). In brief, we found that the short-term input of plant detritus could markedly affect the concentrations and biological characteristics of the C and N fractions in soil. The removal experiment indicated that the contribution of roots to soil nutrients is greater than that of the litter.
类型	Article
语种	英语
开放获取类型	gold, Green Published
收录类别	SCI-E
WOS记录号	WOS:000624536800032
WOS关键词	MICROBIAL COMMUNITY STRUCTURE ; DISSOLVED ORGANIC-MATTER ; ABOVEGROUND LITTER ; SUBTROPICAL FOREST ; ENZYME-ACTIVITIES ; TEMPERATURE SENSITIVITY ; LEAF-LITTER ; DECOMPOSITION ; INPUTS ; RESPIRATION
WOS类目	Multidisciplinary Sciences
WOS研究方向	Science & Technology - Other Topics
来源机构	新疆大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/351375
作者单位	[Zhu, Haiqiang; Gong, Lu; Ding, Zhaolong; Li, Yuefeng] Xinjiang Univ, Coll Resources & Environm Sci, Urumqi, Peoples R China; [Zhu, Haiqiang; Gong, Lu; Ding, Zhaolong; Li, Yuefeng] Minist Educ, Key Lab Oasis Ecol, Urumqi, Peoples R China
推荐引用方式 GB/T 7714	Zhu, Haiqiang,Gong, Lu,Ding, Zhaolong,et al. Effects of litter and root manipulations on soil carbon and nitrogen in a Schrenk's spruce (Picea schrenkiana) forest[J]. 新疆大学,2021,16(2).
APA	Zhu, Haiqiang,Gong, Lu,Ding, Zhaolong,&Li, Yuefeng.(2021).Effects of litter and root manipulations on soil carbon and nitrogen in a Schrenk's spruce (Picea schrenkiana) forest.PLOS ONE,16(2).
MLA	Zhu, Haiqiang,et al."Effects of litter and root manipulations on soil carbon and nitrogen in a Schrenk's spruce (Picea schrenkiana) forest".PLOS ONE 16.2(2021).