气候变化领域集成服务门户(CCPortal): Nitrogen addition effects on tree growth and soil properties mediated by soil phosphorus availability and tree species identity

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DOI	10.1016/j.foreco.2019.117478
	Nitrogen addition effects on tree growth and soil properties mediated by soil phosphorus availability and tree species identity
	Zhao Q.; Zeng D.-H.
发表日期	2019
ISSN	0378-1127
卷号	449
英文摘要	Increasing evidence has suggested that nitrogen (N) deposition has great effects on forest productivity and nutrient cycling, but how these effects are mediated by soil phosphorus (P) availability and tree species identity remains unclear. Here, a two-year factorial experiment was conducted to examine the short-term effects of N addition (100 kg N ha−1 year−1), P addition (50 kg P ha−1 year−1) and their interactions on tree growth and soil nutrient cycling of a Mongolian pine (Pinus sylvestris var. mongolica) plantation and a neighboring Simon poplar (Populus simonii) plantation in Northeast China. Results showed that N addition promoted tree growth (stem increment), reduced soil microbial biomass carbon (C) and N in the Mongolian pine plantation, but did not affect those in the Simon poplar plantation, and these N addition effects were not interacted by P addition. P addition significantly increased microbial biomass C and N in the Simon poplar plantation. N addition elevated soil phosphatase activities and reduced net N mineralization rate, and these N addition effects were alleviated by simultaneous P addition in both plantations. N addition decreased soil labile inorganic P concentration in both plantations and elevated labile organic P in the Mongolian pine plantation, but only the decrease in labile inorganic P with N addition in the Mongolian pine plantation was counteracted by P addition. N addition significantly reduced soil pH, with a greater extent in the Mongolian pine plantation than in the Simon poplar plantation. Moreover, soil pH response explained most of the microbial and nutrient transformation response. Above results indicated that short-term N addition impacts on tree growth and soil microbial biomass were more strongly influenced by tree species identity than by P addition, while N addition effects on soil N and P transformations were strongly influenced by P addition. Drought resistance of trees and acid buffering capacity of soils are key traits influencing the short-term N addition impacts on the growth of trees and microorganisms in this semiarid region. © 2019
英文关键词	Nitrogen addition; Nutrient availability; Phosphorus addition; Pinus sylvestris var. mongolica; Populus simonii; Soil microbial biomass
语种	英语
scopus关键词	Arid regions; Biomass; Forestry; Nitrogen; Nutrients; Phosphorus; Soils; Value engineering; Nitrogen additions; Nutrient availability; Phosphorus addition; Pinus sylvestris; Populus simonii; Soil microbial biomass; Ecology; belowground biomass; buffering; coniferous tree; fertilizer application; forest soil; growth response; mineralization; nitrogen; nutrient availability; phosphorus; soil microorganism; soil property; Biomass; Forestry; Nitrogen; Nutrients; Phosphorus; Pinus Sylvestris; Pinus sylvestris; Populus simonii
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/155838
作者单位	CAS Key Laboratory of Forest Ecology and Management, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, 110016, China; Daqinggou Ecological Station, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, 110016, China
推荐引用方式 GB/T 7714	Zhao Q.,Zeng D.-H.. Nitrogen addition effects on tree growth and soil properties mediated by soil phosphorus availability and tree species identity[J],2019,449.
APA	Zhao Q.,&Zeng D.-H..(2019).Nitrogen addition effects on tree growth and soil properties mediated by soil phosphorus availability and tree species identity.Forest Ecology and Management,449.
MLA	Zhao Q.,et al."Nitrogen addition effects on tree growth and soil properties mediated by soil phosphorus availability and tree species identity".Forest Ecology and Management 449(2019).