Changes in soil acidity under different land use in Zengcheng District, Guangdong Province

Assessing changes in soil acidity and its potential influencing factors is significant for preventing soil acidification and improving soil quality. Ninety-seven soil samples were collected across Zengcheng District, Guangdong Province, which covered three land use types, i.e., paddy rice field, irr...

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Autores principales:	CAI Zejiang, YU Qiangyi, WU Wenbin, WEN Shilin
Formato:	article
Lenguaje:	ZH
Publicado:	Agro-Environmental Protection Institute, Ministry of Agriculture 2021
Materias:	soil acidification ph exchangeable acid soil organic matter calcium carbonate Agriculture (General) S1-972 Environmental sciences GE1-350
Acceso en línea:	https://doaj.org/article/388f7275cf39403bb417788f84dad038
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spelling	oai:doaj.org-article:388f7275cf39403bb417788f84dad0382021-12-03T02:29:42ZChanges in soil acidity under different land use in Zengcheng District, Guangdong Province2095-681910.13254/j.jare.2021.0508https://doaj.org/article/388f7275cf39403bb417788f84dad0382021-11-01T00:00:00Zhttp://www.aed.org.cn/nyzyyhjxb/html/2021/6/20210605.htmhttps://doaj.org/toc/2095-6819Assessing changes in soil acidity and its potential influencing factors is significant for preventing soil acidification and improving soil quality. Ninety-seven soil samples were collected across Zengcheng District, Guangdong Province, which covered three land use types, i.e., paddy rice field, irrigated land, and dryland. Soil pH, exchangeable acid, organic matter(SOM), cation exchange capacity, calcium carbonate, total and available nutrients were determined, and their inner relationship was analized. The 83.7% and 16.3% of collected soil samples had pH lower or higher than 6.5, respectively; 37.8%, 37.8%, and 8.1% of total soil samples were located in the range: 5.5 < pH ≤ 6.5, 4.5 < pH ≤ 5.5, and pH ≤ 4.5, respectively. Under different land uses, the pH following the order: paddy soil(6.02) >irrigable land(5.51) > dry land(4.87). The concentration of soil exchangeable hydrogen was much higher in irrigable land and dry land than that from paddy soil; the concentration of soil exchangeable aluminum was following the order: dry land(1.38 cmol·kg-1)>irrigable land(0.72 cmol·kg-1)> paddy soil(0.31 cmol·kg-1). Soil pH had positively correlation with soil calcium carbonate and total potassium, and negatively correlation with soil exchangeable acid and Olsen-P; soil exchangeable hydrogen had positively correlation with Olsen-P and available potassium, and negatively correlation with calcium carbonate; soil exchangeable aluminum had positively correlation with cation exchange capacity and Olsen-P, and negatively correlated with calcium carbonate and total potassium. Our study indicated that land use was one of the important factors influencing soil acidity, and dry land and irrigable land had much strong acidity than that from paddy soil, and the mechanism need to be further research.CAI ZejiangYU QiangyiWU WenbinWEN ShilinAgro-Environmental Protection Institute, Ministry of Agriculturearticlesoil acidificationphexchangeable acidsoil organic mattercalcium carbonateAgriculture (General)S1-972Environmental sciencesGE1-350ZHJournal of Agricultural Resources and Environment, Vol 38, Iss 6, Pp 980-988 (2021)
institution	DOAJ
collection	DOAJ
language	ZH
topic	soil acidification ph exchangeable acid soil organic matter calcium carbonate Agriculture (General) S1-972 Environmental sciences GE1-350
spellingShingle	soil acidification ph exchangeable acid soil organic matter calcium carbonate Agriculture (General) S1-972 Environmental sciences GE1-350 CAI Zejiang YU Qiangyi WU Wenbin WEN Shilin Changes in soil acidity under different land use in Zengcheng District, Guangdong Province
description	Assessing changes in soil acidity and its potential influencing factors is significant for preventing soil acidification and improving soil quality. Ninety-seven soil samples were collected across Zengcheng District, Guangdong Province, which covered three land use types, i.e., paddy rice field, irrigated land, and dryland. Soil pH, exchangeable acid, organic matter(SOM), cation exchange capacity, calcium carbonate, total and available nutrients were determined, and their inner relationship was analized. The 83.7% and 16.3% of collected soil samples had pH lower or higher than 6.5, respectively; 37.8%, 37.8%, and 8.1% of total soil samples were located in the range: 5.5 < pH ≤ 6.5, 4.5 < pH ≤ 5.5, and pH ≤ 4.5, respectively. Under different land uses, the pH following the order: paddy soil(6.02) >irrigable land(5.51) > dry land(4.87). The concentration of soil exchangeable hydrogen was much higher in irrigable land and dry land than that from paddy soil; the concentration of soil exchangeable aluminum was following the order: dry land(1.38 cmol·kg-1)>irrigable land(0.72 cmol·kg-1)> paddy soil(0.31 cmol·kg-1). Soil pH had positively correlation with soil calcium carbonate and total potassium, and negatively correlation with soil exchangeable acid and Olsen-P; soil exchangeable hydrogen had positively correlation with Olsen-P and available potassium, and negatively correlation with calcium carbonate; soil exchangeable aluminum had positively correlation with cation exchange capacity and Olsen-P, and negatively correlated with calcium carbonate and total potassium. Our study indicated that land use was one of the important factors influencing soil acidity, and dry land and irrigable land had much strong acidity than that from paddy soil, and the mechanism need to be further research.
format	article
author	CAI Zejiang YU Qiangyi WU Wenbin WEN Shilin
author_facet	CAI Zejiang YU Qiangyi WU Wenbin WEN Shilin
author_sort	CAI Zejiang
title	Changes in soil acidity under different land use in Zengcheng District, Guangdong Province
title_short	Changes in soil acidity under different land use in Zengcheng District, Guangdong Province
title_full	Changes in soil acidity under different land use in Zengcheng District, Guangdong Province
title_fullStr	Changes in soil acidity under different land use in Zengcheng District, Guangdong Province
title_full_unstemmed	Changes in soil acidity under different land use in Zengcheng District, Guangdong Province
title_sort	changes in soil acidity under different land use in zengcheng district, guangdong province
publisher	Agro-Environmental Protection Institute, Ministry of Agriculture
publishDate	2021
url	https://doaj.org/article/388f7275cf39403bb417788f84dad038
work_keys_str_mv	AT caizejiang changesinsoilacidityunderdifferentlanduseinzengchengdistrictguangdongprovince AT yuqiangyi changesinsoilacidityunderdifferentlanduseinzengchengdistrictguangdongprovince AT wuwenbin changesinsoilacidityunderdifferentlanduseinzengchengdistrictguangdongprovince AT wenshilin changesinsoilacidityunderdifferentlanduseinzengchengdistrictguangdongprovince
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Changes in soil acidity under different land use in Zengcheng District, Guangdong Province

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