The dynamics of phosphorus fractions and the factors driving phosphorus cycle in Zoige Plateau peatland soil

TY - JOUR

T1 - The dynamics of phosphorus fractions and the factors driving phosphorus cycle in Zoige Plateau peatland soil

AU - Luo, Ling

AU - Ye, Haoyang

AU - Zhang, Danhua

AU - Gu, Ji Dong

AU - Deng, Ouping

N1 - Publisher Copyright: © 2021 Elsevier Ltd

PY - 2021/9

Y1 - 2021/9

N2 - Phosphorus (P) is an essential nutrient, limiting plant growth and microbial activity in many ecosystems. However, a few studies have been conducted to investigate P dynamics and the factors driving P dynamics in peatland soils. Therefore, this study chose Zoige Plateau peatland (the largest peatland in China) to reveal P dynamics and the possible driving factors through fractionating soil P and investigating a series of abiotic and biotic factors. It is found that season, peatland type, and soil depth could strongly affect P dynamics. H2O–P and NaHCO3–P (labile P) had lower content, while NaOH–P, HCl–P, Mix-P, and Residual-P (non-labile P) were the dominant fractions. Besides, the sum of P fractions was higher than the traditional measurement of total P, suggesting P storage might be underestimated in peatland soils. Moreover, it is observed that biotic factors affected P fractions more than abiotic factors, and fungi affected refractory P more than bacteria. This study provides essential information for understanding P cycling in peatland soils and emphasizes specific microbes related to P cycling, which should be paid more attention to in the future.

AB - Phosphorus (P) is an essential nutrient, limiting plant growth and microbial activity in many ecosystems. However, a few studies have been conducted to investigate P dynamics and the factors driving P dynamics in peatland soils. Therefore, this study chose Zoige Plateau peatland (the largest peatland in China) to reveal P dynamics and the possible driving factors through fractionating soil P and investigating a series of abiotic and biotic factors. It is found that season, peatland type, and soil depth could strongly affect P dynamics. H2O–P and NaHCO3–P (labile P) had lower content, while NaOH–P, HCl–P, Mix-P, and Residual-P (non-labile P) were the dominant fractions. Besides, the sum of P fractions was higher than the traditional measurement of total P, suggesting P storage might be underestimated in peatland soils. Moreover, it is observed that biotic factors affected P fractions more than abiotic factors, and fungi affected refractory P more than bacteria. This study provides essential information for understanding P cycling in peatland soils and emphasizes specific microbes related to P cycling, which should be paid more attention to in the future.

KW - Labile P

KW - Non-labile P

KW - P fractions

KW - Phosphatase

KW - Zoige Plateau peatland

UR - http://www.scopus.com/inward/record.url?scp=85103958535&partnerID=8YFLogxK

U2 - 10.1016/j.chemosphere.2021.130501

DO - 10.1016/j.chemosphere.2021.130501

M3 - 文章

C2 - 34126697

AN - SCOPUS:85103958535

SN - 0045-6535

VL - 278

JO - Chemosphere

JF - Chemosphere

M1 - 130501

ER -