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题名: Assessing sedimentological connectivity using WATEM/SEDEM model in a hilly and gully watershed of the Loess Plateau, China
作者: Liu, Yu; Fu, Bojie
刊名: ECOLOGICAL INDICATORS
出版日期: 2016-07
卷号: 66, 期号:0, 页码:259-268
关键词: Landscape pattern ; Landscape connectivity ; Sedimentological connectivity ; Soil erosion ; Sediment flux
DOI: 10.1016/j.ecolind.2016.01.055
部门归属: 城市与区域生态国家重点实验室
英文摘要: Sedimentological connectivity is an important issue in soil erosion and sediment transport. Landscape patterns, in combination with the rainfall regime, are known to shape such sedimentological connectivity. The quantification of sedimentological connectivity provides a link between sediment delivery and landscape pattern. There are two categories of connectivity: structural connectivity, which describes the physical coupling of landscape units, and functional connectivity, which delineates the linkage among landscape elements maintained by material transport. To quantify sedimentological connectivity, both the physical coupling of, and material transfer between, the various landscape components need to be assessed. This study quantifies the sedimentological connectivity of a headwater catchment in the Loess Plateau of China using the soil erosion and sediment delivery model (WATEM/SEDEM). Based on the model, two indicators of connectivity were developed: the area of sedimentologically effective catchment area (SEA) that contributes sediment to the sinks, and the minimum sediment output of locations on the flow path that link sources and sinks. This approach effectively represents the annual status of catchment-scale sedimentological connectivity and, furthermore, the simple structure and readily available input data make it highly practicable. However, for larger river systems in which sediment transport between sources and sinks occur over longer time scales and larger spatial scales, we suggest different techniques for quantifying the sediment flux and parameters delineating the physical coupling of landscape units. (C) 2016 Elsevier Ltd. All rights reserved.
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内容类型: 期刊论文
URI标识: http://ir.rcees.ac.cn/handle/311016/35529
Appears in Collections:城市与区域生态国家重点实验室_期刊论文

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Recommended Citation:
Liu, Yu,Fu, Bojie. Assessing sedimentological connectivity using WATEM/SEDEM model in a hilly and gully watershed of the Loess Plateau, China[J]. ECOLOGICAL INDICATORS,2016,66(0):259-268.
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