Soil organic carbon on the fragmented Chinese Loess Plateau: Combining effects of vegetation types and topographic positions

doi:10.1016/j.still.2017.05.005

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	Soil organic carbon on the fragmented Chinese Loess Plateau: Combining effects of vegetation types and topographic positions
	Wang, Zhiqi 1,2; Hu, Yaxian 1; Wang, Rui 1; Guo, Shengli 1; Du, Lanlan 1; Zhao, Man 1; Yao, Zhihong 2; Guo, SL (reprint author), Inst Soil & Water Conservat, Xinong Rd 26, Yangling 712100, Shaanxi, Peoples R China.
刊名	SOIL & TILLAGE RESEARCH
	2017
卷号	174 页码:1-5
关键词	Soil Organic Carbon Fragmented Topography Spatial Distribution Land Use
ISSN号	0167-1987
DOI	10.1016/j.still.2017.05.005
文献子类	Article
英文摘要	The influence of vegetation coverage and topography on soil organic carbon (SOC) stocks has been intensively studies. However, very few of the studies have recognized the potential combining effects of vegetation types and topographic positions onto SOC distribution, especially on the Chinese Loess Plateau where vegetation recovery has generated complex combination of fragmented topography and vegetation coverage. This study systematically sampled soil cores (259) from four vegetation types (woodland, grassland, cropland, and orchard) at three topographic positions (tableland, slope and valley bottom). Each soil core was divided into three layers: surface soil (0-20 cm), subsoil (20-60 cm) and deep soil (60-200 cm). Our results show that: (1) the SOC concentration declined over soil depths, regardless topographic positions or vegetation types. The absence of ancient cultivation layers at the valley bottoms further made the SOC stocks deep to 200 cm there much less than the tableland with thick loess soil layers (8.3 kg km(-2) vs. 13.4 kg km(-2)). (2) The SOC concentration of cropland varied evidently with topographic positions, with the greatest on the tableland (8.0 g kg(-1)), and the least along the slope (5.3 g ko. However, grassland was rather stable across the three topographic positions. (3) In addition, the SOC concentrations of the three vegetation types were comparable on the tableland (6.1 g kg(-1)), while differed noticeably at the valley bottoms (5.0 g kg(-1)). Overall, our findings in this study call for the account for each combination of topographic position and vegetation type, so as to properly assess regional SOC stocks for sustainable land use.
学科主题	Agriculture
URL标识	查看原文
出版地	AMSTERDAM
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000412265800001
资助机构	Natural Science Foundation of China [41371279]; Fundamental Research Funds of Northwest A F University [2452017191] ; Natural Science Foundation of China [41371279]; Fundamental Research Funds of Northwest A F University [2452017191] ; Natural Science Foundation of China [41371279]; Fundamental Research Funds of Northwest A F University [2452017191] ; Natural Science Foundation of China [41371279]; Fundamental Research Funds of Northwest A F University [2452017191]
内容类型	期刊论文
源URL	[http://ir.iswc.ac.cn/handle/361005/7883]
专题	水保所科研产出--SCI_2017--SCI
通讯作者	Guo, SL (reprint author), Inst Soil & Water Conservat, Xinong Rd 26, Yangling 712100, Shaanxi, Peoples R China.
作者单位	1.Northwest A&F Univ, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China 2.North China Univ Water Resources & Elect Power, Sch Resources & Environm, Zhengzhou 450045, Henan, Peoples R China
推荐引用方式 GB/T 7714	Wang, Zhiqi,Hu, Yaxian,Wang, Rui,et al. Soil organic carbon on the fragmented Chinese Loess Plateau: Combining effects of vegetation types and topographic positions[J]. SOIL & TILLAGE RESEARCH,2017,174:1-5.
APA	Wang, Zhiqi.,Hu, Yaxian.,Wang, Rui.,Guo, Shengli.,Du, Lanlan.,...&Guo, SL .(2017).Soil organic carbon on the fragmented Chinese Loess Plateau: Combining effects of vegetation types and topographic positions.SOIL & TILLAGE RESEARCH,174,1-5.
MLA	Wang, Zhiqi,et al."Soil organic carbon on the fragmented Chinese Loess Plateau: Combining effects of vegetation types and topographic positions".SOIL & TILLAGE RESEARCH 174(2017):1-5.