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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