Distribution of soil organic carbon and phosphorus on an eroded hillslope of the rangeland in the northern Tibet Plateau, China
文献类型：期刊论文
| 作者 | Zhang, JH ; Liu, SZ; Zhong, XH
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| 刊名 | EUROPEAN JOURNAL OF SOIL SCIENCE
 |
| 出版日期 | 2006-06-01 |
| 卷号 | 57期号:3页码:365-371 |
| 关键词 | EROSION QUALITY CS-137 REDISTRIBUTION INDICATORS CESIUM-137 |
| ISSN号 | 1351-0754 |
| 通讯作者 | J. H. Zhang |
| 合作状况 | 其它 |
| 英文摘要 | Some studies on the relationship between soil erosion and subsequent redeposition of eroded soils in the same field and soil quality have been conducted in croplands, yet few studies have revealed this relationship in rangelands. We selected a toposequence with a slope of 30% and a horizontal length of 342 m from the rangeland in the northern Tibet Autonomous Region, China (31 degrees 16'N, 92 degrees 09'E) to determine the relationship between soil erosion, soil organic carbon (SOC) content and available P patterns within a hillslope landscape. Soil samples for the determination of Cs-137 as well as SOC, available P and particle-size fractions were collected at 20 m intervals along a transect of this hillslope. Soil redistribution was caused primarily by wind erosion at toe-slope positions, but primarily by water erosion at the hillslope positions above the toe-slope. In upper- and mid-slope portions (0 m to 244 m horizontal length), SOC content is closely correlated to Cs-137 concentration (r = 0.74, P < 0.01, n= 15), suggesting that SOC distribution along the slope was similar to Cs-137 distribution, which itself was dependent on topographic changes. However, SOC contents in toe-slope portions are less than those above the toe-slope (i.e. upper- and mid-slope portions), and the correlation between Cs-137 and SOC in the toe-slope portion is weaker than that above the toe-slope. A highly significant correlation (r = 0.72, P < 0.001, n= 20) between Cs-137 concentration and available P was found within the whole hillslope landscape, implying the distribution pattern of available P was somewhat different from that of SOC. We suggest that the distribution of SOC within the hillslope landscape is also affected by factors such as assimilation rates due to difference in grassland productivity at different points and different biological oxidation rates of carbon related to patterns of moisture distribution. |
| WOS标题词 | Science & Technology ; Life Sciences & Biomedicine |
| 类目[WOS] | Soil Science |
| 研究领域[WOS] | Agriculture |
| 关键词[WOS] | EROSION ; QUALITY ; CS-137 ; REDISTRIBUTION ; INDICATORS ; CESIUM-137 |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000237692600009 |
| 公开日期 | 2010-11-12 |
| 源URL | [http://ir.imde.ac.cn/handle/131551/2537]  |
| 专题 | 成都山地灾害与环境研究所_成都山地所知识仓储（2009年以前） 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 中国科学院水利部成都山地灾害与环境研究所 |
| 作者单位 | 1.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Peoples R China 2.Minist Water Conservancy & Power, Chengdu 610041, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, JH,Liu, SZ,Zhong, XH. Distribution of soil organic carbon and phosphorus on an eroded hillslope of the rangeland in the northern Tibet Plateau, China[J]. EUROPEAN JOURNAL OF SOIL SCIENCE,2006,57(3):365-371. |
| APA | Zhang, JH,Liu, SZ,&Zhong, XH.(2006).Distribution of soil organic carbon and phosphorus on an eroded hillslope of the rangeland in the northern Tibet Plateau, China.EUROPEAN JOURNAL OF SOIL SCIENCE,57(3),365-371. |
| MLA | Zhang, JH,et al."Distribution of soil organic carbon and phosphorus on an eroded hillslope of the rangeland in the northern Tibet Plateau, China".EUROPEAN JOURNAL OF SOIL SCIENCE 57.3(2006):365-371. |
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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