Estimation of the P Fertilizer Demand of China Using the LePA Model

Modern phosphate (P) fertilizers are sourced from P rock reserves, a finite and dwindling resource. Globally, China is the largest producer and consumer of P fertilizer and will deplete its domestic reserves within 80 years. It is necessary to avoid excess P input in agriculture through estimating P...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Wenjia Yu, Haigang Li, Peteh Mehdi Nkebiwe, Guohua Li, Torsten Müller, Junling Zhang, Jianbo Shen
Formato:	article
Lenguaje:	EN
Publicado:	Frontiers Media S.A. 2021
Materias:	legacy soil P LePA model soil P management P demand China Environmental sciences GE1-350
Acceso en línea:	https://doaj.org/article/77a0f479d58f4034b54b2fe432d891db
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:77a0f479d58f4034b54b2fe432d891db
record_format	dspace
spelling	oai:doaj.org-article:77a0f479d58f4034b54b2fe432d891db2021-11-10T07:46:22ZEstimation of the P Fertilizer Demand of China Using the LePA Model2296-665X10.3389/fenvs.2021.759984https://doaj.org/article/77a0f479d58f4034b54b2fe432d891db2021-11-01T00:00:00Zhttps://www.frontiersin.org/articles/10.3389/fenvs.2021.759984/fullhttps://doaj.org/toc/2296-665XModern phosphate (P) fertilizers are sourced from P rock reserves, a finite and dwindling resource. Globally, China is the largest producer and consumer of P fertilizer and will deplete its domestic reserves within 80 years. It is necessary to avoid excess P input in agriculture through estimating P demand. We used the legacy P assessment model (LePA) to estimate P demand based on soil P management at the county, regional, and country scales according to six P application rate scenarios: (1) rate in 2012 maintained; (2) current rate maintained in low-P counties and P input stopped in high-P counties until critical Olsen-P level (CP) is reached, after which rate equals P-removal; (3) rate decreased to 1–1.5 kg ha−1 year−1 in low-P counties after CP is reached and in high-P counties; (4) rate in each county decreased to 1–8 kg ha−1 year−1 after soil Olsen-P reached CP in low P counties; (5) rate in each county was kept at P-removal rate after reduction; (6) P input was kept at the rate lower than P-offtake rate after reduction. The results showed that the total P fertilizer demand of China was 750 MT P2O5, 54% of P fertilizer can be saved from 2013 to 2080 in China, and soil Olsen-P of all counties can satisfy the demand for high crop yields. The greatest potential to decrease P input was in Yangtze Plain and South China, which reached 60%. Our results provide a firm basis to analyze the depletion of P reserves in other countries.Wenjia YuHaigang LiHaigang LiPeteh Mehdi NkebiweGuohua LiGuohua LiTorsten MüllerJunling ZhangJianbo ShenFrontiers Media S.A.articlelegacy soil PLePA modelsoil P managementP demandChinaEnvironmental sciencesGE1-350ENFrontiers in Environmental Science, Vol 9 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	legacy soil P LePA model soil P management P demand China Environmental sciences GE1-350
spellingShingle	legacy soil P LePA model soil P management P demand China Environmental sciences GE1-350 Wenjia Yu Haigang Li Haigang Li Peteh Mehdi Nkebiwe Guohua Li Guohua Li Torsten Müller Junling Zhang Jianbo Shen Estimation of the P Fertilizer Demand of China Using the LePA Model
description	Modern phosphate (P) fertilizers are sourced from P rock reserves, a finite and dwindling resource. Globally, China is the largest producer and consumer of P fertilizer and will deplete its domestic reserves within 80 years. It is necessary to avoid excess P input in agriculture through estimating P demand. We used the legacy P assessment model (LePA) to estimate P demand based on soil P management at the county, regional, and country scales according to six P application rate scenarios: (1) rate in 2012 maintained; (2) current rate maintained in low-P counties and P input stopped in high-P counties until critical Olsen-P level (CP) is reached, after which rate equals P-removal; (3) rate decreased to 1–1.5 kg ha−1 year−1 in low-P counties after CP is reached and in high-P counties; (4) rate in each county decreased to 1–8 kg ha−1 year−1 after soil Olsen-P reached CP in low P counties; (5) rate in each county was kept at P-removal rate after reduction; (6) P input was kept at the rate lower than P-offtake rate after reduction. The results showed that the total P fertilizer demand of China was 750 MT P2O5, 54% of P fertilizer can be saved from 2013 to 2080 in China, and soil Olsen-P of all counties can satisfy the demand for high crop yields. The greatest potential to decrease P input was in Yangtze Plain and South China, which reached 60%. Our results provide a firm basis to analyze the depletion of P reserves in other countries.
format	article
author	Wenjia Yu Haigang Li Haigang Li Peteh Mehdi Nkebiwe Guohua Li Guohua Li Torsten Müller Junling Zhang Jianbo Shen
author_facet	Wenjia Yu Haigang Li Haigang Li Peteh Mehdi Nkebiwe Guohua Li Guohua Li Torsten Müller Junling Zhang Jianbo Shen
author_sort	Wenjia Yu
title	Estimation of the P Fertilizer Demand of China Using the LePA Model
title_short	Estimation of the P Fertilizer Demand of China Using the LePA Model
title_full	Estimation of the P Fertilizer Demand of China Using the LePA Model
title_fullStr	Estimation of the P Fertilizer Demand of China Using the LePA Model
title_full_unstemmed	Estimation of the P Fertilizer Demand of China Using the LePA Model
title_sort	estimation of the p fertilizer demand of china using the lepa model
publisher	Frontiers Media S.A.
publishDate	2021
url	https://doaj.org/article/77a0f479d58f4034b54b2fe432d891db
work_keys_str_mv	AT wenjiayu estimationofthepfertilizerdemandofchinausingthelepamodel AT haigangli estimationofthepfertilizerdemandofchinausingthelepamodel AT haigangli estimationofthepfertilizerdemandofchinausingthelepamodel AT petehmehdinkebiwe estimationofthepfertilizerdemandofchinausingthelepamodel AT guohuali estimationofthepfertilizerdemandofchinausingthelepamodel AT guohuali estimationofthepfertilizerdemandofchinausingthelepamodel AT torstenmuller estimationofthepfertilizerdemandofchinausingthelepamodel AT junlingzhang estimationofthepfertilizerdemandofchinausingthelepamodel AT jianboshen estimationofthepfertilizerdemandofchinausingthelepamodel
_version_	1718440388070473728

Estimation of the P Fertilizer Demand of China Using the LePA Model

Ejemplares similares