Application of the Cs-137 tracer technique to study soil erosion of alpine meadows in the headwater region of the Yellow River
文献类型：期刊论文
| 作者 | Li, Y. S.1; Wang, G. X.1,2,3 ; Ding, Y. J.1; Zhao, L.1; Wang, Y. B.4
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| 刊名 | ENVIRONMENTAL GEOLOGY
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| 出版日期 | 2009-09-01 |
| 卷号 | 58期号:5页码:1021-1028 |
| 关键词 | Cs-137 tracer technique Soil erosion Degradation of vegetation Alpine meadow Headwater area Yellow River |
| ISSN号 | 0943-0105 |
| 通讯作者 | Li, Y. S. |
| 英文摘要 | The Cs-137 tracer technique was used to study soil erosion of alpine meadow grassland in two small river basins in the headwater region of the Yellow River. The results show that the levels of Cs-137 in soil samples from this alpine meadow vegetation zone exhibit an exponential distribution, generally within a depth of approximately 20 cm. Due to strong winds, freeze-thaw cycles and water, soil erosion was found to be stronger on the upper slope than on the lower slope, and except for the slope crest, the intensity of soil erosion at other sites was as follows: upslope < midslope < downslope. There was a significant negative correlation between the intensity of soil erosion and the extent of alpine meadow vegetation cover (P < 0.01). The mean soil erosion modulus exhibited a linear reduction trend with an increase in vegetation cover, and the correlation coefficient R (2) was a parts per thousand yen 0.997. The higher the degradation degree of the alpine meadow grassland, the greater is the soil erosion. The mean erosion modulus in the severely degraded meadow zone was 2.23 times greater than the one in the slightly degraded zone, and the maximum erosion modulus reached 2.96 x 10(6) kg/km(2)/a. |
| WOS标题词 | Science & Technology ; Life Sciences & Biomedicine ; Physical Sciences |
| 类目[WOS] | Environmental Sciences ; Geosciences, Multidisciplinary ; Water Resources |
| 研究领域[WOS] | Environmental Sciences & Ecology ; Geology ; Water Resources |
| 关键词[WOS] | QINGHAI-TIBET PLATEAU ; LOESS PLATEAU ; RATES ; CATCHMENT ; CHINA ; MODEL |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000269014000011 |
| 源URL | [http://ir.imde.ac.cn/handle/131551/10567]  |
| 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 |
| 作者单位 | 1.Chinese Acad Sci, State Key Lab Cryospher Sci, Cold & Arid Reg Environm & Engn Res Inst, Cryosphere Res Stn Qinghai Xizang Plateau Sci, Lanzhou 730000, Peoples R China 2.Chinese Acad Sci, Inst Mt Hazard & Environm, Chengdu 610041, Peoples R China 3.Minist Water Conservancy & Power, Chengdu 610041, Peoples R China 4.Lanzhou Univ, Coll Resources & Environm, Lanzhou 730000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Y. S.,Wang, G. X.,Ding, Y. J.,et al. Application of the Cs-137 tracer technique to study soil erosion of alpine meadows in the headwater region of the Yellow River[J]. ENVIRONMENTAL GEOLOGY,2009,58(5):1021-1028. |
| APA | Li, Y. S.,Wang, G. X.,Ding, Y. J.,Zhao, L.,&Wang, Y. B..(2009).Application of the Cs-137 tracer technique to study soil erosion of alpine meadows in the headwater region of the Yellow River.ENVIRONMENTAL GEOLOGY,58(5),1021-1028. |
| MLA | Li, Y. S.,et al."Application of the Cs-137 tracer technique to study soil erosion of alpine meadows in the headwater region of the Yellow River".ENVIRONMENTAL GEOLOGY 58.5(2009):1021-1028. |
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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