Soil phosphorus composition, loss risk and contribution to the aquatic environment in a typical agricultural area

River eutrophication risk increased significantly in agricultural areas. In this paper, spatial variability of soil phosphorus (P) and loss risk in the Jialu River Basin, China, were analyzed using a geostatistical approach. The correlation between soil and river sediment P was analyzed to identify...

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Autores principales:	Tianhai Ma, Ying Bai, Xiaohong Ruan
Formato:	article
Lenguaje:	EN
Publicado:	IWA Publishing 2021
Materias:	eutrophication geostatistics soil p loss risk source of aquatic p spatial variability Environmental technology. Sanitary engineering TD1-1066
Acceso en línea:	https://doaj.org/article/b7579e4422bf4d2fa86eb53c1a5e2f80
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spelling	oai:doaj.org-article:b7579e4422bf4d2fa86eb53c1a5e2f802021-11-06T03:50:46ZSoil phosphorus composition, loss risk and contribution to the aquatic environment in a typical agricultural area2709-80442709-805210.2166/wqrj.2021.004https://doaj.org/article/b7579e4422bf4d2fa86eb53c1a5e2f802021-05-01T00:00:00Zhttp://wqrjc.iwaponline.com/content/56/2/111https://doaj.org/toc/2709-8044https://doaj.org/toc/2709-8052River eutrophication risk increased significantly in agricultural areas. In this paper, spatial variability of soil phosphorus (P) and loss risk in the Jialu River Basin, China, were analyzed using a geostatistical approach. The correlation between soil and river sediment P was analyzed to identify the main aquatic P source. The results showed that inorganic phosphorus (IP) was the main form of soil TP (82.13%), but the ratio of apatite phosphorus (AP) and non-apatite phosphorus (NAIP) varied between different soil types. AP was the primary form of IP in fluvo-aquic cinnamon soil, while NAIP dominated in meadow aeolian sandy soil. Calculated soil total dissolvable P (TDP, 94–622 mg/kg) exceeded the environmental threshold. High TDP (>400 mg/kg) in mixed soil and sandy soil indicated a high P loss risk. The spatial variability of soil P was moderate to weak, indicating a low heterogeneity. In sediment, IP and AP showed a significant correlation with total organic carbon (p < 0.05), indicating a P source of soil erosion. Sediment AP had a significant positive correlation with soil AP (p < 0.05), confirming soil as the main source of sediment P. Furthermore, an accumulation of sediment P along the Jialu River and its consistency with water TP was revealed. HIGHLIGHTS Based on a geostatistical approach, spatial variability of soil P and loss risk in Jialu River Basin, China, were analyzed.; IP is the main form of soil TP in the Jialu River Basin and high TDP in mixed soil and sandy soil indicated a high P loss risk.; The correlation between soil and river sediment P showed that soil is the main source of sediment P.;Tianhai MaYing BaiXiaohong RuanIWA Publishingarticleeutrophicationgeostatisticssoil p loss risksource of aquatic pspatial variabilityEnvironmental technology. Sanitary engineeringTD1-1066ENWater Quality Research Journal, Vol 56, Iss 2, Pp 111-125 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	eutrophication geostatistics soil p loss risk source of aquatic p spatial variability Environmental technology. Sanitary engineering TD1-1066
spellingShingle	eutrophication geostatistics soil p loss risk source of aquatic p spatial variability Environmental technology. Sanitary engineering TD1-1066 Tianhai Ma Ying Bai Xiaohong Ruan Soil phosphorus composition, loss risk and contribution to the aquatic environment in a typical agricultural area
description	River eutrophication risk increased significantly in agricultural areas. In this paper, spatial variability of soil phosphorus (P) and loss risk in the Jialu River Basin, China, were analyzed using a geostatistical approach. The correlation between soil and river sediment P was analyzed to identify the main aquatic P source. The results showed that inorganic phosphorus (IP) was the main form of soil TP (82.13%), but the ratio of apatite phosphorus (AP) and non-apatite phosphorus (NAIP) varied between different soil types. AP was the primary form of IP in fluvo-aquic cinnamon soil, while NAIP dominated in meadow aeolian sandy soil. Calculated soil total dissolvable P (TDP, 94–622 mg/kg) exceeded the environmental threshold. High TDP (>400 mg/kg) in mixed soil and sandy soil indicated a high P loss risk. The spatial variability of soil P was moderate to weak, indicating a low heterogeneity. In sediment, IP and AP showed a significant correlation with total organic carbon (p < 0.05), indicating a P source of soil erosion. Sediment AP had a significant positive correlation with soil AP (p < 0.05), confirming soil as the main source of sediment P. Furthermore, an accumulation of sediment P along the Jialu River and its consistency with water TP was revealed. HIGHLIGHTS Based on a geostatistical approach, spatial variability of soil P and loss risk in Jialu River Basin, China, were analyzed.; IP is the main form of soil TP in the Jialu River Basin and high TDP in mixed soil and sandy soil indicated a high P loss risk.; The correlation between soil and river sediment P showed that soil is the main source of sediment P.;
format	article
author	Tianhai Ma Ying Bai Xiaohong Ruan
author_facet	Tianhai Ma Ying Bai Xiaohong Ruan
author_sort	Tianhai Ma
title	Soil phosphorus composition, loss risk and contribution to the aquatic environment in a typical agricultural area
title_short	Soil phosphorus composition, loss risk and contribution to the aquatic environment in a typical agricultural area
title_full	Soil phosphorus composition, loss risk and contribution to the aquatic environment in a typical agricultural area
title_fullStr	Soil phosphorus composition, loss risk and contribution to the aquatic environment in a typical agricultural area
title_full_unstemmed	Soil phosphorus composition, loss risk and contribution to the aquatic environment in a typical agricultural area
title_sort	soil phosphorus composition, loss risk and contribution to the aquatic environment in a typical agricultural area
publisher	IWA Publishing
publishDate	2021
url	https://doaj.org/article/b7579e4422bf4d2fa86eb53c1a5e2f80
work_keys_str_mv	AT tianhaima soilphosphoruscompositionlossriskandcontributiontotheaquaticenvironmentinatypicalagriculturalarea AT yingbai soilphosphoruscompositionlossriskandcontributiontotheaquaticenvironmentinatypicalagriculturalarea AT xiaohongruan soilphosphoruscompositionlossriskandcontributiontotheaquaticenvironmentinatypicalagriculturalarea
_version_	1718443938590752768

Soil phosphorus composition, loss risk and contribution to the aquatic environment in a typical agricultural area

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