Use of landslide-dammed lake deposits and pollen tracing techniques to investigate the erosional response of a small drainage basin in the Loess Plateau, China, to land use change during the late 16th century
文献类型：会议论文
| 作者 | X. Zhang（张信宝）; D.E. Walling; X. He（贺秀斌）; Y. Long（龙翼） |
| 出版日期 | 2009 |
| 会议名称 | Workshop on Impact of Environmental Change on Sediment Sources and Sediment Delivery |
| 会议日期 | JUL 09-13, 2007 |
| 会议地点 | Perugia, ITALY |
| 关键词 | Pollen Sediment yield Reconstruction Landslide-dammed lake Land use change Sediment deposits |
| 卷号 | 79 |
| 期号 | 3 |
| 页码 | 205-213 |
| 通讯作者 | X. Zhang（张信宝） |
| 英文摘要 | A major landslide that occurred in 1569 in the Huangtuwa gully catchment within the Rolling Loess Plateau region of China, resulted in the creation of a landslide-dammed lake at the outlet of the small 0.1 km2 tributary valley of the Houxiaotan Gully. All the sediment transported to the outlet of this catchment was deposited in the lake. After about 30 years the dam failed and the lake deposits were dissected as the stream cut down to its former base level. Substantial remnants of the sediment deposits that accumulated over the ca. 30 year period are, however, preserved as terraces near the outlet of the catchment and a vertical section through these sediment deposits was investigated using stratigraphic and pollen tracing techniques. Individual flood couplets could be clearly distinguished and these permitted the establishment of a chronology for the sediment deposits and the estimation of the sediment yields associated with individual events and individual years. Pollen analysis undertaken on samples collected from the individual flood couplets also provided information on the variation of the pollen content of the sediment and the proportion of Artemisia pollen during the period represented by the deposits. Interpretation of the information assembled from the sediment section has made it possible to reconstruct the erosional history of the Houxiaotan catchment during the 31 year period following the landslide. The average sediment yield of the catchment in the late 16th century was very similar to its present-day sediment yield. The sediment yield from the catchment and the relative contribution of the inter-gully areas, as compared to the gully system, declined immediately after the landslide as a result of abandonment of the cultivated land within the catchment. The restoration of cultivation in the catchment after about 17 years resulted in an increase in sediment yield from ca. 9000 t km− 2 yr− 1 to ca. 30,000 t km− 2 yr− 1 and a substantial increase in the proportion of sediment contributed by the cultivated inter-gully areas. Scope exists to apply a similar approach to the sediment deposits that accumulated in other former landslide-dammed lakes within the Rolling Loess Plateau region of China, in order to develop an improved understanding of the erosion history of the region. |
| 收录类别 | SCI |
| 合作状况 | 国际 |
| 会议主办者 | The International Commission on Continental Erosion |
| 会议录 | Workshop on Impact of Environmental Change on Sediment Sources and Sediment Delivery(Special Issue of Catena Vol. 79, Issue 3)
 |
| 语种 | 英语 |
| ISSN号 | 0341-8162 |
| WOS记录号 | WOS:000272019300005 |
| 源URL | [http://ir.imde.ac.cn/handle/131551/2125]  |
| 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） |
| 推荐引用方式 GB/T 7714 | X. Zhang,D.E. Walling,X. He,et al. Use of landslide-dammed lake deposits and pollen tracing techniques to investigate the erosional response of a small drainage basin in the Loess Plateau, China, to land use change during the late 16th century[C]. 见:Workshop on Impact of Environmental Change on Sediment Sources and Sediment Delivery. Perugia, ITALY. JUL 09-13, 2007. |
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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