KFU. Card publication. Effects of land uses and rainfall regimes on surface runoff and sediment yield in a nested watershed of the Loess Plateau, China

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EFFECTS OF LAND USES AND RAINFALL REGIMES ON SURFACE RUNOFF AND SEDIMENT YIELD IN A NESTED WATERSHED OF THE LOESS PLATEAU, CHINA

Form of presentation

Articles in international journals and collections

Year of publication

2022

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Authors, employees of KFU

Gusarov Artem Viktorovich, author

Other authors

Hu Yawei , author

Li Yang , author

Tang Peng , author

Yu Yang , author

Zhang Jianjun , author

Zhao Jiongchang , author

Bibliographic description in the original language

Jiongchang Zhao, Jianjun Zhang, Yawei Hu, Yang Li, Peng Tang, Artyom V. Gusarov, Yang Yu. Effects of land uses and rainfall regimes on surface runoff and sediment yield in a nested watershed of the Loess Plateau, China // Journal of Hydrology: Regional Studies, 2022. Volume 44, December 2022, 101277

Annotation

Study region: The Loess Plateau, China. Study focus Land-use and rainfall characteristics are two crucial influencing factors that affect the surface runoff and soil loss process; however, less attention has been paid to nested watersheds in vulnerable geo-ecosystems. Here we analyzed rainfall characteristics impacts on runoff and sediment in one of the nested watersheds, which contains six sub-watersheds with different land uses. According to rainfall amount, duration, and maximum rainfall intensity within 30 min (I30), 180 rainfall events during 2004–2019 were categorized into four types using K-means clustering method, and different hydrological years were distinguished. New hydrological insights for the study region: The runoff coefficient and sediment yield under the rainfall regime Ⅰ (little precipitation, moderate duration of precipitation, low intensity of precipitation) were the lowest; under the rainfall regime Ⅳ (high precipitation, short duration of precipitation, high intensity of precipitation), these values were the largest. The average runoff coefficient among the six sub-watersheds analyzed varied as follows: farmland watershed > farming-pastoral watershed > closed watershed > secondary forest watershed > mixed forest watershed > plantation watershed. The closed watershed had the lowest average sediment yield, while the farming-pastoral watershed showed the highest one. In addition, the runoff coefficient and sediment yield also changed differently in various hydrological years. The results of this study suggest that natural restoration measures are the optimal choice for coordinating the relationship between surface runoff and sediment yield. Enhanced long-term monitoring is needed to accurately describe watershed processes.

Keywords

Land use, Rainfall regime, Surface runoff, Soil loss, Vegetation restoration, Loess Plateau

The name of the journal

Journal of Hydrology: Regional Studies

URL

https://www.sciencedirect.com/science/article/pii/S2214581822002907?via%3Dihub

Please use this ID to quote from or refer to the card

https://repository.kpfu.ru/eng/?p_id=283923&p_lang=2

Resource files

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2022_Journal_of__ydrology_Regional_Studies_44_101277.pdf	3,36	pdf	show / download

Full metadata record

Field DC	Value	Language
dc.contributor.author	Gusarov Artem Viktorovich	ru_RU
dc.contributor.author	Hu Yawei	ru_RU
dc.contributor.author	Li Yang	ru_RU
dc.contributor.author	Tang Peng	ru_RU
dc.contributor.author	Yu Yang	ru_RU
dc.contributor.author	Zhang Jianjun	ru_RU
dc.contributor.author	Zhao Jiongchang	ru_RU
dc.date.accessioned	2022-01-01T00:00:00Z	ru_RU
dc.date.available	2022-01-01T00:00:00Z	ru_RU
dc.date.issued	2022	ru_RU
dc.identifier.citation	Jiongchang Zhao, Jianjun Zhang, Yawei Hu, Yang Li, Peng Tang, Artyom V. Gusarov, Yang Yu. Effects of land uses and rainfall regimes on surface runoff and sediment yield in a nested watershed of the Loess Plateau, China // Journal of Hydrology: Regional Studies, 2022. Volume 44, December 2022, 101277	ru_RU
dc.identifier.uri	https://repository.kpfu.ru/eng/?p_id=283923&p_lang=2	ru_RU
dc.description.abstract	Journal of Hydrology: Regional Studies	ru_RU
dc.description.abstract	Study region: The Loess Plateau, China. Study focus Land-use and rainfall characteristics are two crucial influencing factors that affect the surface runoff and soil loss process; however, less attention has been paid to nested watersheds in vulnerable geo-ecosystems. Here we analyzed rainfall characteristics impacts on runoff and sediment in one of the nested watersheds, which contains six sub-watersheds with different land uses. According to rainfall amount, duration, and maximum rainfall intensity within 30 min (I30), 180 rainfall events during 2004–2019 were categorized into four types using K-means clustering method, and different hydrological years were distinguished. New hydrological insights for the study region: The runoff coefficient and sediment yield under the rainfall regime Ⅰ (little precipitation, moderate duration of precipitation, low intensity of precipitation) were the lowest; under the rainfall regime Ⅳ (high precipitation, short duration of precipitation, high intensity of precipitation), these values were the largest. The average runoff coefficient among the six sub-watersheds analyzed varied as follows: farmland watershed > farming-pastoral watershed > closed watershed > secondary forest watershed > mixed forest watershed > plantation watershed. The closed watershed had the lowest average sediment yield, while the farming-pastoral watershed showed the highest one. In addition, the runoff coefficient and sediment yield also changed differently in various hydrological years. The results of this study suggest that natural restoration measures are the optimal choice for coordinating the relationship between surface runoff and sediment yield. Enhanced long-term monitoring is needed to accurately describe watershed processes.	ru_RU
dc.language.iso	ru	ru_RU
dc.subject	Land use	ru_RU
dc.subject	Rainfall regime	ru_RU
dc.subject	Surface runoff	ru_RU
dc.subject	Soil loss	ru_RU
dc.subject	Vegetation restoration	ru_RU
dc.subject	Loess Plateau	ru_RU
dc.title	Effects of land uses and rainfall regimes on surface runoff and sediment yield in a nested watershed of the Loess Plateau, China	ru_RU
dc.type	Articles in international journals and collections	ru_RU