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Taxonomic and geographic distribution of total phosphorus in Florida surface soils
Chen, M; Ma, LQ
2001-09-01
Source PublicationSOIL SCIENCE SOCIETY OF AMERICA JOURNAL
Volume65Issue:5Pages:1539-1547
AbstractTaxonomic and geographic distributions of background P concentrations are important in assessing whether a soil P level is influenced by anthropogenic activities. This study was conducted to establish an upper baseline concentration (UBC) of soil P, which is defined as 97.5% of the background concentration, using 448 geographically and pedogenically representative Florida surface soils (genetic horizon A, A1, Ap, O, O1 or Op) using total P as determined by the USEPA Method 3052 (HCl-HNO3-HF digestion). A significant difference existed in total P concentrations between disturbed (126 mg kg(-1), n = 180) and undisturbed (60 mg kg(-1), n = 268) soils. Geometric mean (GM) concentration of total P in the undisturbed soils decreased in the order of Histosols (350 mg kg(-1)) > Mollisols (171 mg kg(-1)), Inceptisols (140 mg kg(-1)) > Ultisols (88 mg kg(-1)) > Alfisols (54 mg kg(-1)), Entisols (53 mg kg(-1)) > Spodosols (24 mg kg(-1)). Aquic suborders tended to have greater P contents than the dry suborders, e.g., Aquents (92 mg kg(-1)) > Psamments (47 mg kg(-1)) and Aquods (27 mg kg(-1)) > Orthods (14 mg kg(-1)). Total P estimation based on digitized taxonomic soil maps suggested that native soil properties were primary factors in controlling total P in soils. The wide occurrence of P bearing parent materials resulted in many soils having high P concentrations. Twenty-four P-elevated samples from the disturbed soils were identified using the UBC of P for the undisturbed soils at suborder level as reference criterion. Anthropogenic P inputs were related to commercial PO4-fertilizer application and population growth as nonpoint sources.
SubtypeArticle
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
WOS Subject ExtendedAgriculture
WOS KeywordELEMENT CONCENTRATIONS ; METAL CONCENTRATIONS ; UNITED-STATES ; RETENTION ; ESTUARINE ; SEDIMENTS
Indexed BySCI
Language英语
WOS SubjectSoil Science
WOS IDWOS:000172918500026
PublisherSOIL SCI SOC AMER
Citation statistics
Cited Times:16[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/68314
Collection中国科学院地理科学与资源研究所
Corresponding AuthorChen, M
Affiliation1.Chinese Acad Sci, Inst Geog & Nat Resources, Beijing 100101, Peoples R China
2.Univ Florida, Dept Soil & Water Sci, Gainesville, FL 32611 USA
Recommended Citation
GB/T 7714
Chen, M,Ma, LQ. Taxonomic and geographic distribution of total phosphorus in Florida surface soils[J]. SOIL SCIENCE SOCIETY OF AMERICA JOURNAL,2001,65(5):1539-1547.
APA Chen, M,&Ma, LQ.(2001).Taxonomic and geographic distribution of total phosphorus in Florida surface soils.SOIL SCIENCE SOCIETY OF AMERICA JOURNAL,65(5),1539-1547.
MLA Chen, M,et al."Taxonomic and geographic distribution of total phosphorus in Florida surface soils".SOIL SCIENCE SOCIETY OF AMERICA JOURNAL 65.5(2001):1539-1547.
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