globalchange  > 气候变化事实与影响
DOI: 10.1016/j.catena.2018.11.027
WOS记录号: WOS:000456754600026
论文题名:
Profile stock of soil organic carbon and distribution in croplands of Northeast China
作者: Li, Meng; Han, Xiaozeng; Du, Shuli; Li, Lu-Jun
通讯作者: Li, Lu-Jun
刊名: CATENA
ISSN: 0341-8162
EISSN: 1872-6887
出版年: 2019
卷: 174, 页码:285-292
语种: 英语
英文关键词: Soil organic carbon density ; Soil organic carbon storage ; Soil profile ; Haplic Phaeozems ; Haplic Chernozems ; Luvic Phaeozems ; Albic Luvisols
WOS关键词: BULK-DENSITY ; GEOGRAPHICAL-DISTRIBUTION ; TOTAL NITROGEN ; STORAGE ; MATTER ; UNCERTAINTY ; ELEVATION ; CLIMATE ; TOPSOIL ; REGION
WOS学科分类: Geosciences, Multidisciplinary ; Soil Science ; Water Resources
WOS研究方向: Geology ; Agriculture ; Water Resources
英文摘要:

Soil organic carbon (SOC) stock is one of the most important carbon (C) reservoirs on the Earth and plays a vital role in the global climate change. However, SOC stock at a regional scale is still uncertain due to the lack of soil bulk density data, differences in sample depth, geography, and soil properties. Based on data from 78 soil profiles, we estimated SOC density (SOCD) and its distribution at 0-100 cm depth of croplands in three typical Counties (Lindian, Hailun and Baoqing Counties) in Northeast China. Soil organic carbon content and variations significantly decreased with increased soil depth. The SOCD in 100-cm depth ranged from 52.3 to 323.1 Mg ha(-1), with an average of 163.6 Mg ha(-1). The SOCD in the top 20 cm accounted for 32.8% of that in 100 cm soil profile. A good mathematical equation between SOCD of 0-20 cm and 0-100 cm would be a useful tool to estimate SOCD in soil profiles. In addition, soil depth, bulk density, soil pH, and elevation were significantly correlated with SOC content. Regression of SOC in the data set to individual factors (soil depth, BD, soil pH, clay content, and elevation) is relevant to understand how C changes over time and depth.


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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/130437
Appears in Collections:气候变化事实与影响

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作者单位: Chinese Acad Sci, Natl Field Observat & Res Stn Hailun Agroecosyst, Northeast Inst Geog & Agroecol, Harbin 150081, Heilongjiang, Peoples R China

Recommended Citation:
Li, Meng,Han, Xiaozeng,Du, Shuli,et al. Profile stock of soil organic carbon and distribution in croplands of Northeast China[J]. CATENA,2019-01-01,174:285-292
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