Assessing sedimentological connectivity using WATEM/SEDEM model in a hilly and gully watershed of the Loess Plateau, China
Liu, Y; Fu, BJ
2016
发表期刊ECOLOGICAL INDICATORS
ISSN1470-160X
卷号66页码:259-268
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.
文章类型Journal
关键词Landscape pattern Landscape connectivity Sedimentological connectivity Soil erosion Sediment flux
学科领域Biodiversity & Conservation ; Environmental Sciences & Ecology
研究领域[WOS]Biodiversity Conservation ; Environmental Sciences
关键词[WOS]HYDROLOGICAL CONNECTIVITY ; LANDSCAPE CONNECTIVITY ; YELLOW-RIVER ; SEMIARID CATCHMENT ; SOIL-EROSION ; LAND-USE ; RUNOFF ; YIELD ; CLIMATE ; (DIS)CONNECTIVITY
收录类别SCI
语种英语
WOS记录号WOS:000388912300027
出版者ELSEVIER SCIENCE BV
引用统计
被引频次:4[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.igsnrr.ac.cn/handle/311030/44208
专题生态系统网络观测与模拟院重点实验室_生态网络实验室
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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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