Nitrogen-15 natural abundance in the soils of forested small catchments across a nitrogen-deposition gradient, southwestern China.

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	Nitrogen-15 natural abundance in the soils of forested small catchments across a nitrogen-deposition gradient, southwestern China.
	Jiang ChunLai ; Zhang XiaoShan ; Xiao JinSong ; Xia Yuan
刊名	ACTA PETROLOGICA SINICA
	2009-05
卷号	25 期号:5 页码:1291-1296
关键词	Nitrogen flux Nitrogen cycle Nitrogen stable isotope forest soil Southwestern China
中文摘要	Recent studies have shown that natural abundance of stable nitrogen (N) isotopes can be used for interpreting N cycles and N saturation in forest ecosystems. This paper examined the stable isotopic composition of soils in selected subtropical forested catchments. The delta(15)N values ranged from -6.9 parts per thousand to 6.9 parts per thousand for vegetation and soil. The soil profiles showed continuous decrease in total N (TN) concentration from 0.64% to < 0.10% with soil depth. In the upper soil horizons, soil delta(15)N values in LCG and TSP were significantly lower than those in LGS. The lower delta(15)N values the N-limited site (LCG) indicated tightly closed N cycles. The (15)N-depletion the N-enriched site (TSP) was due probably to high inputs of (15)N-depleted atmospheric N. Our results indicated that natural abundance (15)N in soil alone may be not a good indicator of N saturation in subtropical forest ecosystems in southern China.
WOS记录号	WOS:000266684900022
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/21437]
专题	生态环境研究中心_大气环境科学实验室
推荐引用方式 GB/T 7714	Jiang ChunLai,Zhang XiaoShan,Xiao JinSong,et al. Nitrogen-15 natural abundance in the soils of forested small catchments across a nitrogen-deposition gradient, southwestern China.[J]. ACTA PETROLOGICA SINICA,2009,25(5):1291-1296.
APA	Jiang ChunLai,Zhang XiaoShan,Xiao JinSong,&Xia Yuan.(2009).Nitrogen-15 natural abundance in the soils of forested small catchments across a nitrogen-deposition gradient, southwestern China..ACTA PETROLOGICA SINICA,25(5),1291-1296.
MLA	Jiang ChunLai,et al."Nitrogen-15 natural abundance in the soils of forested small catchments across a nitrogen-deposition gradient, southwestern China.".ACTA PETROLOGICA SINICA 25.5(2009):1291-1296.