中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Dynamics of Soil Organic Carbon and Microbial Biomass Carbon in Relation to Water Erosion and Tillage Erosion

文献类型:期刊论文

作者Nie Xiaojun1,2; Zhang Jianhui1; Su Zhengan1
刊名PLOS ONE
出版日期2013-05-22
卷号8期号:5页码:e64059
关键词Soil organic carbon microbial biomass carbon tillage erosion water erosion
ISSN号1932-6203
通讯作者张建辉
中文摘要

英文摘要Dynamics of soil organic carbon (SOC) are associated with soil erosion, yet there is a shortage of research concerning the relationship between soil erosion, SOC, and especially microbial biomass carbon (MBC). In this paper, we selected two typical slope landscapes including gentle and steep slopes from the Sichuan Basin, China, and used the Cs-137 technique to determine the effects of water erosion and tillage erosion on the dynamics of SOC and MBC. Soil samples for the determination of Cs-137, SOC, MBC and soil particle-size fractions were collected on two types of contrasting hillslopes. Cs-137 data revealed that soil loss occurred at upper slope positions of the two landscapes and soil accumulation at the lower slope positions. Soil erosion rates as well as distribution patterns of the <0.002-mm clay shows that water erosion is the major process of soil redistribution in the gentle slope landscape, while tillage erosion acts as the dominant process of soil redistribution in the steep slope landscape. In gentle slope landscapes, both SOC and MBC contents increased downslope and these distribution patterns were closely linked to soil redistribution rates. In steep slope landscapes, only SOC contents increased downslope, dependent on soil redistribution. It is noticeable that MBC/SOC ratios were significantly lower in gentle slope landscapes than in steep slope landscapes, implying that water erosion has a negative effect on the microbial biomass compared with tillage erosion. It is suggested that MBC dynamics are closely associated with soil redistribution by water erosion but independent of that by tillage erosion, while SOC dynamics are influenced by soil redistribution by both water erosion and tillage erosion.
WOS标题词Science & Technology
类目[WOS]Multidisciplinary Sciences
研究领域[WOS]Science & Technology - Other Topics
关键词[WOS]STEEP HILLSLOPE ; CROP YIELD ; LOAM SOIL ; REDISTRIBUTION ; LANDSCAPE ; QUALITY ; TRANSLOCATION ; MANAGEMENT ; TERRACES ; IMPACT
收录类别SCI
语种英语
WOS记录号WOS:000320362700094
公开日期2013-12-18
源URL[http://ir.imde.ac.cn/handle/131551/6633]  
专题成都山地灾害与环境研究所_山地表生过程与生态调控重点实验室
成都山地灾害与环境研究所_山地灾害与地表过程重点实验室
作者单位1.Chinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Surface Proc & Ecol Regulat, Chinese Acad Sci & Minist Water Conservancy, Chengdu, Peoples R China
2.Henan Polytech Univ, Sch Surveying & Land Informat Engn, Jiaozuo, Peoples R China
推荐引用方式
GB/T 7714
Nie Xiaojun,Zhang Jianhui,Su Zhengan. Dynamics of Soil Organic Carbon and Microbial Biomass Carbon in Relation to Water Erosion and Tillage Erosion[J]. PLOS ONE,2013,8(5):e64059.
APA Nie Xiaojun,Zhang Jianhui,&Su Zhengan.(2013).Dynamics of Soil Organic Carbon and Microbial Biomass Carbon in Relation to Water Erosion and Tillage Erosion.PLOS ONE,8(5),e64059.
MLA Nie Xiaojun,et al."Dynamics of Soil Organic Carbon and Microbial Biomass Carbon in Relation to Water Erosion and Tillage Erosion".PLOS ONE 8.5(2013):e64059.

入库方式: OAI收割

来源:成都山地灾害与环境研究所

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