IMHE OpenIR  > 山地表生过程与生态调控重点实验室
Carbon demand drives microbial mineralization of organic phosphorus during the early stage of soil development
Wang, Jipeng1,2; Wu, Yanhong1; Zhou, Jun1; Bing, Haijian1; Sun, Hongyang1
Corresponding AuthorWu, Yanhong
2016
Source PublicationBIOLOGY AND FERTILITY OF SOILS
ISSN0178-2762
EISSN1432-0789
Volume52Issue:6Pages:825-839
SubtypeArticle
AbstractDespite that organic phosphorus (Po) is a source of bioavailable P during the early stage of soil development, it remains unclear whether P availability or organic carbon (C) mineralization is the main regulator of Po mineralization. In this study, the P availability (labile inorganic P, Pi) and the potential organic C mineralization (beta-glucosidase activity) were investigated at the Hailuogou Chronosequence and a reference site (35-125 and similar to 1400 years after glacier retreat, respectively) to decipher their relationships with the potential Po mineralization (acid and alkaline phosphomonoesterase activities). Labile Pi displayed no trend in the soil profile, whereas it was significantly higher at the reference site than the young sites. Enzyme activities decreased down the soil profile, but this trend weakened for specific activities (enzyme activity per microbial biomass C). Enzyme activities and specific activities displayed no trend with the succession stage. Potential Po mineralization was more related to potential organic C mineralization (R (2) = 0.41-0.69, p < 0.0001) than P availability (R (2) = 0.05-0.09, p a parts per thousand currency signaEuro parts per thousand 0.05). By increasing the specific activity of beta-glucosidase, the microbial biomass C:P ratio decreased to reach the value of 8:1. Probably, the phosphate in the excess of microbial demand was released as the by-product of C mineralization. At the young sites of the chronosequence, the significant correlation between Po and C concentrations in the surface mineral horizon (R (2) = 0.85, p < 0.0001) suggested that the mineralizations of Po and organic C were linked to each other. The results suggested that the demand for C may drive the microbial mineralization of soil Po during the early stage of soil development, and the phosphate released by the Po mineralization may serve as a potential source of labile Pi for plants.
KeywordHailuogou Chronosequence Carbon And Phosphorus Mineralization Phosphorus Availability Acid And Alkaline Phosphomonoesterase Beta-glucosidase
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
DOI10.1007/s00374-016-1123-7
WOS Subject ExtendedAgriculture
Indexed BySCI
WOS KeywordPHOSPHATASE-ACTIVITY ; P AVAILABILITY ; ECOENZYMATIC STOICHIOMETRY ; TERRESTRIAL ECOSYSTEMS ; COMMUNITY COMPOSITION ; BIOMASS PHOSPHORUS ; ENZYME-ACTIVITIES ; GLACIER FORELAND ; TIBETAN PLATEAU ; OXYGEN ISOTOPES
Language英语
Quartile1区
TOP
WOS SubjectSoil Science
WOS IDWOS:000380126600007
Funding OrganizationNational Natural Science Foundation of China(41272200 ; 41401253)
Citation statistics
Cited Times:35[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/17668
Collection山地表生过程与生态调控重点实验室
Affiliation1.Chinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Surface Proc & Ecol Regulat, 9,Block 4,Renminnanlu Rd, Chengdu 610041, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
First Author Affilication中国科学院水利部成都山地灾害与环境研究所
Recommended Citation
GB/T 7714
Wang, Jipeng,Wu, Yanhong,Zhou, Jun,et al. Carbon demand drives microbial mineralization of organic phosphorus during the early stage of soil development[J]. BIOLOGY AND FERTILITY OF SOILS,2016,52(6):825-839.
APA Wang, Jipeng,Wu, Yanhong,Zhou, Jun,Bing, Haijian,&Sun, Hongyang.(2016).Carbon demand drives microbial mineralization of organic phosphorus during the early stage of soil development.BIOLOGY AND FERTILITY OF SOILS,52(6),825-839.
MLA Wang, Jipeng,et al."Carbon demand drives microbial mineralization of organic phosphorus during the early stage of soil development".BIOLOGY AND FERTILITY OF SOILS 52.6(2016):825-839.
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