National scale assessment of the soil erosion and conservation function of terraces in China

Terraces are not only productive but also have outstanding ecological functions, becoming an important soil and water conservation measure worldwide. Although there are many studies on soil and water conservation in terraces, due to the lack of data on the spatial distribution of terraces, most of t...

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Autores principales:	Xiaoyu Liu, Liangjie Xin, Yahan Lu
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Terrace Soil erosion Soil conservation Spatialization RUSLE China Ecology QH540-549.5
Acceso en línea:	https://doaj.org/article/c33d605e8ddc4c6ca7ea135ac7e953a9
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id	oai:doaj.org-article:c33d605e8ddc4c6ca7ea135ac7e953a9
record_format	dspace
spelling	oai:doaj.org-article:c33d605e8ddc4c6ca7ea135ac7e953a92021-12-01T04:56:18ZNational scale assessment of the soil erosion and conservation function of terraces in China1470-160X10.1016/j.ecolind.2021.107940https://doaj.org/article/c33d605e8ddc4c6ca7ea135ac7e953a92021-10-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S1470160X21006051https://doaj.org/toc/1470-160XTerraces are not only productive but also have outstanding ecological functions, becoming an important soil and water conservation measure worldwide. Although there are many studies on soil and water conservation in terraces, due to the lack of data on the spatial distribution of terraces, most of the current studies are focused on small areas, lacking large-scale studies. This study is the first to quantitatively measure soil erosion and soil and water conservation capacity of terraces and their spatial distribution throughout China. The spatialization method and Revised Universal Soil Loss Equation model were used to calculate the soil erosion modulus and quantity of terraces and slope farmland at the pixel scale. The results showed that the average soil erosion modulus and soil erosion quantity for the terraces in China in 2017 were 273.56 t km−2 a-1 and 4.88 × 107 t, respectively. The average soil conservation modulus and soil conservation quantities in 2017 were 2132.59 t km−2 a-1 and 3.81 × 108 t, respectively. The terraces maintained 88.63% of the soil from erosion at the national scale. The vast majority of terraces experienced micro erosion (84.53%) and slight erosion (14.97%), with only a small percentage area of terraces experiencing moderate erosion and above. Spatially, the terraces in the Black Soil Area, Red Soil Area, and Rocky Mountain Area had better soil conservation effects, while the terraces in the Loess Plateau and Tibetan Plateau had poor soil conservation effects. Findings from this study will help to understand regional differences in soil erosion in terraces in China, which in turn will help to formulate environmental protection policies.Xiaoyu LiuLiangjie XinYahan LuElsevierarticleTerraceSoil erosionSoil conservationSpatializationRUSLEChinaEcologyQH540-549.5ENEcological Indicators, Vol 129, Iss , Pp 107940- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Terrace Soil erosion Soil conservation Spatialization RUSLE China Ecology QH540-549.5
spellingShingle	Terrace Soil erosion Soil conservation Spatialization RUSLE China Ecology QH540-549.5 Xiaoyu Liu Liangjie Xin Yahan Lu National scale assessment of the soil erosion and conservation function of terraces in China
description	Terraces are not only productive but also have outstanding ecological functions, becoming an important soil and water conservation measure worldwide. Although there are many studies on soil and water conservation in terraces, due to the lack of data on the spatial distribution of terraces, most of the current studies are focused on small areas, lacking large-scale studies. This study is the first to quantitatively measure soil erosion and soil and water conservation capacity of terraces and their spatial distribution throughout China. The spatialization method and Revised Universal Soil Loss Equation model were used to calculate the soil erosion modulus and quantity of terraces and slope farmland at the pixel scale. The results showed that the average soil erosion modulus and soil erosion quantity for the terraces in China in 2017 were 273.56 t km−2 a-1 and 4.88 × 107 t, respectively. The average soil conservation modulus and soil conservation quantities in 2017 were 2132.59 t km−2 a-1 and 3.81 × 108 t, respectively. The terraces maintained 88.63% of the soil from erosion at the national scale. The vast majority of terraces experienced micro erosion (84.53%) and slight erosion (14.97%), with only a small percentage area of terraces experiencing moderate erosion and above. Spatially, the terraces in the Black Soil Area, Red Soil Area, and Rocky Mountain Area had better soil conservation effects, while the terraces in the Loess Plateau and Tibetan Plateau had poor soil conservation effects. Findings from this study will help to understand regional differences in soil erosion in terraces in China, which in turn will help to formulate environmental protection policies.
format	article
author	Xiaoyu Liu Liangjie Xin Yahan Lu
author_facet	Xiaoyu Liu Liangjie Xin Yahan Lu
author_sort	Xiaoyu Liu
title	National scale assessment of the soil erosion and conservation function of terraces in China
title_short	National scale assessment of the soil erosion and conservation function of terraces in China
title_full	National scale assessment of the soil erosion and conservation function of terraces in China
title_fullStr	National scale assessment of the soil erosion and conservation function of terraces in China
title_full_unstemmed	National scale assessment of the soil erosion and conservation function of terraces in China
title_sort	national scale assessment of the soil erosion and conservation function of terraces in china
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/c33d605e8ddc4c6ca7ea135ac7e953a9
work_keys_str_mv	AT xiaoyuliu nationalscaleassessmentofthesoilerosionandconservationfunctionofterracesinchina AT liangjiexin nationalscaleassessmentofthesoilerosionandconservationfunctionofterracesinchina AT yahanlu nationalscaleassessmentofthesoilerosionandconservationfunctionofterracesinchina
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National scale assessment of the soil erosion and conservation function of terraces in China

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