Soil Nitrogen Storage, Distribution, and Associated Controlling Factors in the Northeast Tibetan Plateau Shrublands

doi:10.3390/f8110416

NWIPB OpenIR

	Soil Nitrogen Storage, Distribution, and Associated Controlling Factors in the Northeast Tibetan Plateau Shrublands
	Nie, Xiuqing 1,2,3; Xiong, Feng1,2,3 ; Yang, Lucun 1,2; Li, Changbin 1,2,3; Zhou, Guoying1,2
	2017-11-01
发表期刊	FORESTS
ISSN	1999-4907
卷号	8 期号:11
文章类型	Article
摘要	Although the soils in the Tibetan Plateau shrublands store large amounts of total nitrogen (N), the estimated values remain uncertain because of spatial heterogeneity and a lack of field observations. In this study, we quantified the regional soil N storage, spatial and vertical density distributions, and related climatic controls using 183 soil profiles sampled from 61 sites across the Northeast Tibetan Plateau shrublands during the period of 2011-2013. Our analysis revealed a soil N storage value of 132.40 Tg at a depth of 100 cm, with an average density of 1.21 kg m(-2). Soil N density was distributed at greater levels in alpine shrublands, compared with desert shrublands. Spatially, soil N densities decreased from south to north and from east to west, and, vertically, the soil N in the upper 30 and 50 cm accounted for 42% and 64% of the total soil N stocks in the Tibetan Plateau. However, compared with desert shrublands, the surface layers in alpine shrublands exhibited a larger distribution of soil N stocks. Overall, the soil N density in the top 30 cm increased significantly with the mean annual precipitation (MAP) and tended to decrease with the mean annual temperature (MAT), although the dominant climatic controls differed among shrubland types. Specifically, MAP in alpine shrublands, and MAT in desert shrubland, had a weak effect on N density. Soil pH can significant affect soil N density in the Tibetan Plateau shrublands. In conclusion, changes in soil N density should be monitored over the long term to provide accurate information about the effects of climatic factors.
关键词	Soil Total Nitrogen Spatial Distribution Vertical Distribution Climatic Factors Tibetan Plateau Shrublands
WOS标题词	Science & Technology ; Life Sciences & Biomedicine
DOI	10.3390/f8110416
关键词[WOS]	CARBON SEQUESTRATION ; ORGANIC-CARBON ; TERRESTRIAL ECOSYSTEMS ; PATTERNS ; VEGETATION ; LIMITATION ; RESPONSES ; CLIMATE ; REGION ; CYCLE
收录类别	SCI
语种	英语
项目资助者	National Science and Technology Support Project(2014BAC05B01) ; National Program on Basic Work Project of China(2015FY11030001-5) ; Strategic Priority Research Program of CAS(XDA0505030304) ; National Natural Science Foundation of China(40801076)
WOS研究方向	Forestry
WOS类目	Forestry
WOS记录号	WOS:000416795600012
出版者	MDPI AG
引用统计	被引频次：22[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://210.75.249.4/handle/363003/10378
专题	中国科学院西北高原生物研究所
通讯作者	Zhou, Guoying
作者单位	1.Chinese Acad Sci, Northwest Inst Plateau Biol, Key Lab Tibetan Med Res, Xining 810008, Peoples R China 2.Qinghai Key Lab Qinghai Tibet Plateau Biol Resour, Xining 810008, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Nie, Xiuqing,Xiong, Feng,Yang, Lucun,et al. Soil Nitrogen Storage, Distribution, and Associated Controlling Factors in the Northeast Tibetan Plateau Shrublands[J]. FORESTS,2017,8(11).
APA	Nie, Xiuqing,Xiong, Feng,Yang, Lucun,Li, Changbin,&Zhou, Guoying.(2017).Soil Nitrogen Storage, Distribution, and Associated Controlling Factors in the Northeast Tibetan Plateau Shrublands.FORESTS,8(11).
MLA	Nie, Xiuqing,et al."Soil Nitrogen Storage, Distribution, and Associated Controlling Factors in the Northeast Tibetan Plateau Shrublands".FORESTS 8.11(2017).