气候变化领域集成服务门户(CCPortal): Nitrogen effects on quantity, chemistry, and decomposability of Pinus densiflora and Quercus variabilis litters under elevated CO2 and warming

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DOI	10.1016/j.foreco.2020.118315
	Nitrogen effects on quantity, chemistry, and decomposability of Pinus densiflora and Quercus variabilis litters under elevated CO2 and warming
	Park H.-J.; Lim S.-S.; Yang H.I.; Lee K.-S.; Kwak J.-H.; Park S.-I.; Kim H.-Y.; Lee S.-M.; Choi W.-J.
发表日期	2020
ISSN	0378-1127
卷号	473
英文摘要	The effects of increased nitrogen (N) availability through atmospheric deposition on the quantity and quality of tree leaf litter have been widely reported. However, such N effects under co-elevated CO2 concentration ([CO2]) and air temperature (Tair) have not been investigated. In this study, changes in biomass and chemistry of litter of Pinus densiflora S. et Z. (pine) and Quercus variabilis Blume (oak) saplings with two levels of each N × [CO2] × Tair were investigated for two growing seasons. The levels of N, [CO2], and Tair were 2 and 6-fold of ambient N deposition, ambient and ambient + 285 ppmv, and ambient and ambient + 2.2 °C, respectively, on average across the two seasons. The concentrations of N, minerals, and carbon (C) compounds such as non-structural carbohydrate (NSC) and lignin as well as stoichiometry such as the ratio of C to N (C/N) and lignin to N (lignin/N) of litter were analyzed to determine litter chemistry. In addition, the legacy effect of changed chemistry on microbial decomposability of the litters were also assessed by measuring CO2 emission in a 60-day lab incubation experiment. The effect of high N addition on increasing litter production was consistent regardless of [CO2] and Tair for oak; however, for pine, N-induced increases in litter production were negated under elevated [CO2] and/or Tair, probably due to efficient uptake and use of N by pine under elevated [CO2] as well as lowered N demand via warming-induced stress under elevated Tair. High N-induced decreases in C/N and lignin/N was consistent across [CO2]-Tair combination for both species though other chemical components such as NSC and minerals including phosphorous, calcium, aluminum, and manganese varied inconsistently. The CO2 emission from the soils amended with litters of different chemistry was not correlated with litter chemistry, suggesting that changed litter chemistry under different N level × [CO2] × Tair may not affect litter decomposability in the soils. This study enlarges our understanding of the effect of increased N availability on litter quantity, chemical composition, and microbial decomposability under different [CO2] and Tair. However, a study with mature trees in a natural forest stand should further improve our understanding. © 2020 Elsevier B.V.
英文关键词	Climate change; Litter biomass; Litter chemistry; Nitrogen deposition; Tree leaf litter
语种	英语
scopus关键词	Chemical analysis; Deposition; Forestry; Lignin; Meteorological problems; Nitrogen; Plants (botany); Vehicles; Atmospheric depositions; Chemical component; Chemical compositions; Litter chemistry; Natural forest stands; Nitrogen effects; Non-structural carbohydrates; Pinus densiflora; Carbon dioxide; air temperature; atmospheric deposition; carbon dioxide; coniferous tree; deciduous tree; decomposition; growing season; litter; microbial activity; Chemical Analysis; Deposition; Forestry; Nitrogen; Vehicles; Pinus densiflora; Quercus variabilis
来源期刊	Forest Ecology and Management
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/155144
作者单位	Department of Rural & Biosystems Engineering, Chonnam National University, Gwangju, 61186, South Korea; Bio R&D Center, CJ Cheiljedang, Suwon, Gyeonggi-do 16495, South Korea; Max Planck Institute for Biogeochemistry, Jena, 07745, Germany; National Instrumentation Center for Environmental Management, Seoul National University, Seoul, 08826, South Korea; Department of Rural Construction Engineering, Jeonbuk National University, Jeonju, Jeollabukdo 57896, South Korea; Department of Applied Plant Science, Chonnam National University, Gwangju, 61186, South Korea; AgriBio Institute of Climate Change Management, Chonnam National University, Gwangju, 61186, South Korea
推荐引用方式 GB/T 7714	Park H.-J.,Lim S.-S.,Yang H.I.,et al. Nitrogen effects on quantity, chemistry, and decomposability of Pinus densiflora and Quercus variabilis litters under elevated CO2 and warming[J],2020,473.
APA	Park H.-J..,Lim S.-S..,Yang H.I..,Lee K.-S..,Kwak J.-H..,...&Choi W.-J..(2020).Nitrogen effects on quantity, chemistry, and decomposability of Pinus densiflora and Quercus variabilis litters under elevated CO2 and warming.Forest Ecology and Management,473.
MLA	Park H.-J.,et al."Nitrogen effects on quantity, chemistry, and decomposability of Pinus densiflora and Quercus variabilis litters under elevated CO2 and warming".Forest Ecology and Management 473(2020).