Responses of plant-soil properties to increasing N deposition and implications for large-scale eco-restoration in the semiarid grassland of the northern Loess Plateau, China

CORC > 烟台海岸带研究所 > 中国科学院烟台海岸带研究所 > 海岸带生物学与生物资源利用重点实验室 > 海岸带生物学与生物资源利用所重点实验室

	Responses of plant-soil properties to increasing N deposition and implications for large-scale eco-restoration in the semiarid grassland of the northern Loess Plateau, China
	Han, Xiangwei 1; Tsunekawa, Atsushi 2; Tsubo, Mitsuru 2; Shao, Hongbo 3,4
刊名	ECOLOGICAL ENGINEERING
	2013-11-01
卷号	60 页码:1-9
关键词	Grassland ecosystem Stipa bungeana Soil organic carbon N cycle Eco-restoration
英文摘要	Increasing nitrogen deposition influences natural and semi-natural ecosystems, especially nutrient-poor ecosystems. Grassland on the northern areas of Loess Plateau, China, suffers from both wind and water erosion resulting in a nutrient-poor ecosystem. However, experimental investigation of the effects of nitrogen deposition on grassland in this region is scarce. In the current study, an in situ experiment was initiated at the northern part of Loess Plateau, which is also a coalmine base, to investigate the responses of Stipa bungeana dominant grassland to nitrogen deposition. To indicate the ravine character of Loess Plateau, China, experiments were conducted on two slopes with opposite slope aspects. On each site, 3 m x 5 m plots were exposed to either ambient N deposition (control) or ambient + 2.5 g m-2 yr-1 (low N), + 5 g m-2 yr-1 (medium N), and + 10 g m-2 yr-1 (high N) added as NH4NO3. After 1 year of N addition, the plots exposed to the added N had significantly higher concentration of mineral N (NH4 +-N + NO3--N) in the 0-20 cm soil layer compared to plots exposed to ambient N deposition. Soil organic carbon and soil total N were not altered by the N addition. S. bungeana exposed to the added N exhibited a significant increase in aboveground tissue N concentration on shady and sunny sites (p > 0.05), as well as an increase in N/P ratio. N concentrations of S. bungeana and simulated N deposition levels had a clearly linear relationship (R2 > 0.9). The N recovered in S. bungeana aboveground tissue accounted for 16.4-27.2% of the added N at the shady site, and 22-35% at the sunny site. However, the tissue N or P concentration of Lespedeza davurica, a legume plant, was not altered by the added N. The effects of simulated N addition at the shady and sunny sites on the soil and the plants were very similar; however, they differed in the extent of soil and plant N concentration changes. Observations after 1 year of N addition suggest that N addition can significantly and rapidly affect N availability (mineral N) and gramineous plant tissue chemistry in the northern Loess Plateau, China, which provides important implications for large-scale eco-restoration of the northern Loess Plateau, China. c 2013 Elsevier B. V. All rights reserved.
研究领域[WOS]	Environmental Sciences & Ecology ; Engineering
关键词[WOS]	ATMOSPHERIC NITROGEN DEPOSITION ; EXOTIC ANNUAL GRASSLANDS ; CARBON SEQUESTRATION ; SEMINATURAL GRASSLANDS ; PHOSPHORUS LIMITATION ; SPATIAL VARIABILITY ; SOUTHERN CALIFORNIA ; TEMPERATE FORESTS ; MINERALIZATION ; FERTILIZATION
收录类别	SCI
语种	英语
WOS记录号	WOS:000326239700001
公开日期	2016-04-26
内容类型	期刊论文
源URL	[http://ir.yic.ac.cn/handle/133337/9053]
专题	烟台海岸带研究所_海岸带生物学与生物资源利用所重点实验室
作者单位	1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China 2.Tottori Univ, Arid Land Res Ctr, Tottori 6800001, Japan 3.Chinese Acad Sci, Yantai Inst Coastal Zone Res YIC, Key Lab Coastal Biol & Bioresources Utilizat, Yantai 264003, Peoples R China 4.Qingdao Univ Sci & Technol, Inst Life Sci, Qingdao 266042, Peoples R China
推荐引用方式 GB/T 7714	Han, Xiangwei,Tsunekawa, Atsushi,Tsubo, Mitsuru,et al. Responses of plant-soil properties to increasing N deposition and implications for large-scale eco-restoration in the semiarid grassland of the northern Loess Plateau, China[J]. ECOLOGICAL ENGINEERING,2013,60:1-9.
APA	Han, Xiangwei,Tsunekawa, Atsushi,Tsubo, Mitsuru,&Shao, Hongbo.(2013).Responses of plant-soil properties to increasing N deposition and implications for large-scale eco-restoration in the semiarid grassland of the northern Loess Plateau, China.ECOLOGICAL ENGINEERING,60,1-9.
MLA	Han, Xiangwei,et al."Responses of plant-soil properties to increasing N deposition and implications for large-scale eco-restoration in the semiarid grassland of the northern Loess Plateau, China".ECOLOGICAL ENGINEERING 60(2013):1-9.