Effect of soil conservation measures and slope on runoff, soil, TN, and TP losses from cultivated lands in northern China

Soil and nutrient loss characteristics in cultivated lands are scarcely identified in northern China that could retard reasonable implementation of soil conservation measures. In the present study, seven-year of water, sediment, and nutrient data in 2014–2020 from five cultivated plots in the Miyun...

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Autor principal:	Haiyan Fang
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Runoff plot Soil conservation measure Soil loss TN TP Ecology QH540-549.5
Acceso en línea:	https://doaj.org/article/636bcaf25a82491199135846878fec83
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id	oai:doaj.org-article:636bcaf25a82491199135846878fec83
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spelling	oai:doaj.org-article:636bcaf25a82491199135846878fec832021-12-01T04:51:00ZEffect of soil conservation measures and slope on runoff, soil, TN, and TP losses from cultivated lands in northern China1470-160X10.1016/j.ecolind.2021.107677https://doaj.org/article/636bcaf25a82491199135846878fec832021-07-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S1470160X21003423https://doaj.org/toc/1470-160XSoil and nutrient loss characteristics in cultivated lands are scarcely identified in northern China that could retard reasonable implementation of soil conservation measures. In the present study, seven-year of water, sediment, and nutrient data in 2014–2020 from five cultivated plots in the Miyun Reservoir, Beijing were used to explore runoff, soil, total nitrogen (TN) and total phosphorous (TP) loss characteristics and their responses to soil conservation measures, slope gradients, and rainfall characteristics. Annual soil loss rate (SLR) decreased from 3025.23 t km−2 yr−1 on the plot with no soil conservation measure to 3.47 t km−2 yr−1 on the terraced plot. Contour tillage on gentle slopes decreased soil and nutrient losses and allowed more runoff running downslope. Event-averaged SLR also presented the same trend. Runoff depth decreased insignificantly from 72.83 mm on plot with no soil conservation measure, 68.40 mm on contour tillage plots, to 3.35 mm on terraced plot. Annual TN and TP losses decreased from 344.82 and 27.21 kg km−2 yr−1 on cultivated plot with no soil conservation measure to 11.11 kg km−2 yr−1 and 0.47 kg km−2 yr−1 on terraced plot, respectively. Particulate TN and TP losses contributed over 50% of the total, depending on SLR. This study implies that contour tillage is preferred on gentle slopes, and steep slope should be implemented with terrace or other measures in the study region.Haiyan FangElsevierarticleRunoff plotSoil conservation measureSoil lossTNTPEcologyQH540-549.5ENEcological Indicators, Vol 126, Iss , Pp 107677- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Runoff plot Soil conservation measure Soil loss TN TP Ecology QH540-549.5
spellingShingle	Runoff plot Soil conservation measure Soil loss TN TP Ecology QH540-549.5 Haiyan Fang Effect of soil conservation measures and slope on runoff, soil, TN, and TP losses from cultivated lands in northern China
description	Soil and nutrient loss characteristics in cultivated lands are scarcely identified in northern China that could retard reasonable implementation of soil conservation measures. In the present study, seven-year of water, sediment, and nutrient data in 2014–2020 from five cultivated plots in the Miyun Reservoir, Beijing were used to explore runoff, soil, total nitrogen (TN) and total phosphorous (TP) loss characteristics and their responses to soil conservation measures, slope gradients, and rainfall characteristics. Annual soil loss rate (SLR) decreased from 3025.23 t km−2 yr−1 on the plot with no soil conservation measure to 3.47 t km−2 yr−1 on the terraced plot. Contour tillage on gentle slopes decreased soil and nutrient losses and allowed more runoff running downslope. Event-averaged SLR also presented the same trend. Runoff depth decreased insignificantly from 72.83 mm on plot with no soil conservation measure, 68.40 mm on contour tillage plots, to 3.35 mm on terraced plot. Annual TN and TP losses decreased from 344.82 and 27.21 kg km−2 yr−1 on cultivated plot with no soil conservation measure to 11.11 kg km−2 yr−1 and 0.47 kg km−2 yr−1 on terraced plot, respectively. Particulate TN and TP losses contributed over 50% of the total, depending on SLR. This study implies that contour tillage is preferred on gentle slopes, and steep slope should be implemented with terrace or other measures in the study region.
format	article
author	Haiyan Fang
author_facet	Haiyan Fang
author_sort	Haiyan Fang
title	Effect of soil conservation measures and slope on runoff, soil, TN, and TP losses from cultivated lands in northern China
title_short	Effect of soil conservation measures and slope on runoff, soil, TN, and TP losses from cultivated lands in northern China
title_full	Effect of soil conservation measures and slope on runoff, soil, TN, and TP losses from cultivated lands in northern China
title_fullStr	Effect of soil conservation measures and slope on runoff, soil, TN, and TP losses from cultivated lands in northern China
title_full_unstemmed	Effect of soil conservation measures and slope on runoff, soil, TN, and TP losses from cultivated lands in northern China
title_sort	effect of soil conservation measures and slope on runoff, soil, tn, and tp losses from cultivated lands in northern china
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/636bcaf25a82491199135846878fec83
work_keys_str_mv	AT haiyanfang effectofsoilconservationmeasuresandslopeonrunoffsoiltnandtplossesfromcultivatedlandsinnorthernchina
_version_	1718405725965778944

Effect of soil conservation measures and slope on runoff, soil, TN, and TP losses from cultivated lands in northern China

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