Preliminary results of the study on wind erosion in the Qinghai-Tibetan Plateau using Cs-137 technique
文献类型:期刊论文
作者 | Yan, P; Dong, GR; Zhang, XB; Zhang, YY |
刊名 | CHINESE SCIENCE BULLETIN |
出版日期 | 2000-06-01 |
卷号 | 45期号:11页码:1019-1025 |
ISSN号 | 1001-6538 |
关键词 | Cs-137 technique Qinghai-Tibetan Plateau wind erosion |
通讯作者 | Ping Yan |
英文摘要 | The worldwide fallout of caesium-137 (Cs-137) associated with the nuclear weapon tests during the 1950s and 1960s has provided a valuable man-made tracer for studies of soil erosion and sediment delivery. But relatively few researchers have used it to estimate wind erosion. In this note, the Cs-137 technique is introduced into the studies of wind erosion and its modern processes in the Qinghai-Tibetan Plateau. Two Cs-137 reference inventories of 982.11 and 2 376.04 Bq . m(-2) were established preminarily, distributed in the south and middle-north parts of the studied area respectively. By analyzing the patterns of Cs-137 depth profiles from sampling sites, the aeolian processes of erosion and deposition in: nearly 40 years have been revealed, i.e. the shrub coppice dune (S1) and semi-fixed dunefields (S3) experienced the alternation of erosion and deposition, while the grasslands (S4, S6 and S7) and dry farmlands (S5) suffered erosion only. By using Cs-137 model, the average wind erosion rates for shrub coppice dune (S1), semi-fixed dune fields (S3), dry farmlands (S5) and grasslands (S4, S6 and S7) were estimated to be 84.14, 69.43, 30.68 and 21.84 t . ha(-1) . a(-1) respectively, averaging 47.59 t . ha(-1) . a(-1) for the whole plateau, which can be regarded as of the medium erosion standard. These results derived from Cs-137 for the first time have significant implications for the further research of wind erosion and desertification control in the Qinghai-Tibetan Plateau. |
学科主题 | 水土保持学 |
WOS标题词 | Science & Technology |
类目[WOS] | Multidisciplinary Sciences |
研究领域[WOS] | Science & Technology - Other Topics |
关键词[WOS] | SOIL-EROSION ; SEDIMENT REDISTRIBUTION ; CESIUM-137 ; NIGER ; RATES |
收录类别 | SCI |
语种 | 英语 |
WOS记录号 | WOS:000086835800014 |
公开日期 | 2011-08-22 |
源URL | [http://192.168.143.20:8080/handle/131551/3381] |
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.Beijing Normal Univ, Minist Educ China, Key Lab Environm Change & Nat Disaster, Beijing 100875, Peoples R China 2.Chinese Acad Sci, Desert Res Inst, Lanzhou 730000, Peoples R China 3.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Peoples R China 4.Sichuan Union Univ, Dept Phys, Chengdu 610041, Peoples R China |
推荐引用方式 GB/T 7714 | Yan, P,Dong, GR,Zhang, XB,et al. Preliminary results of the study on wind erosion in the Qinghai-Tibetan Plateau using Cs-137 technique[J]. CHINESE SCIENCE BULLETIN,2000,45(11):1019-1025. |
APA | Yan, P,Dong, GR,Zhang, XB,&Zhang, YY.(2000).Preliminary results of the study on wind erosion in the Qinghai-Tibetan Plateau using Cs-137 technique.CHINESE SCIENCE BULLETIN,45(11),1019-1025. |
MLA | Yan, P,et al."Preliminary results of the study on wind erosion in the Qinghai-Tibetan Plateau using Cs-137 technique".CHINESE SCIENCE BULLETIN 45.11(2000):1019-1025. |
入库方式: OAI收割
来源:成都山地灾害与环境研究所
浏览0
下载0
收藏0
其他版本
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。