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  5. 2017--SCI
Soil organic carbon on the fragmented Chinese Loess Plateau: Combining effects of vegetation types and topographic positions

文献类型：期刊论文

作者Wang, Zhiqi1,2; Hu, Yaxian1; Wang, Rui1; Guo, Shengli1; Du, Lanlan1; Zhao, Man1; Yao, Zhihong2; Guo, SL (reprint author), Inst Soil & Water Conservat, Xinong Rd 26, Yangling 712100, Shaanxi, Peoples R China.
刊名SOIL & TILLAGE RESEARCH
出版日期2017
卷号174页码:1-5
关键词Soil Organic Carbon Fragmented Topography Spatial Distribution Land Use
ISSN号0167-1987
DOI10.1016/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
WOS记录号WOS:000412265800001
出版者ELSEVIER SCIENCE BV
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]
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.

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来源：水土保持研究所

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