Assessing sedimentological connectivity using WATEM/SEDEM model in a hilly and gully watershed of the Loess Plateau, China
Liu, Y; Fu, BJ
2016
Source PublicationECOLOGICAL INDICATORS
ISSN1470-160X
Volume66Pages:259-268
AbstractSedimentological 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.
SubtypeJournal
KeywordLandscape pattern Landscape connectivity Sedimentological connectivity Soil erosion Sediment flux
Subject AreaBiodiversity & Conservation ; Environmental Sciences & Ecology
WOS Subject ExtendedBiodiversity Conservation ; Environmental Sciences
WOS KeywordHYDROLOGICAL CONNECTIVITY ; LANDSCAPE CONNECTIVITY ; YELLOW-RIVER ; SEMIARID CATCHMENT ; SOIL-EROSION ; LAND-USE ; RUNOFF ; YIELD ; CLIMATE ; (DIS)CONNECTIVITY
Indexed BySCI
Language英语
WOS IDWOS:000388912300027
PublisherELSEVIER SCIENCE BV
Citation statistics
Cited Times:8[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/44208
Collection生态系统网络观测与模拟院重点实验室_生态网络实验室
Recommended Citation
GB/T 7714
Liu, Y,Fu, BJ. Assessing sedimentological connectivity using WATEM/SEDEM model in a hilly and gully watershed of the Loess Plateau, China[J]. ECOLOGICAL INDICATORS,2016,66:259-268.
APA Liu, Y,&Fu, BJ.(2016).Assessing sedimentological connectivity using WATEM/SEDEM model in a hilly and gully watershed of the Loess Plateau, China.ECOLOGICAL INDICATORS,66,259-268.
MLA Liu, Y,et al."Assessing sedimentological connectivity using WATEM/SEDEM model in a hilly and gully watershed of the Loess Plateau, China".ECOLOGICAL INDICATORS 66(2016):259-268.
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