Publication detail

Physically separated soil organic matter pools as indicators of carbon and nitrogen change under long-term fertilization in a Chinese Mollisol

MUSTAFA, A. SAEED, Q. NESHAD, M.T.K. NAN, S.HONGJUN, G. PING, Y. NAVEED, M.MINGGANG, X. DELAGO, A.N.

Original Title

Physically separated soil organic matter pools as indicators of carbon and nitrogen change under long-term fertilization in a Chinese Mollisol

Type

journal article in Web of Science

Language

English

Original Abstract

Isolation and quantification of soil organic matter (SOM) pools under the influence of management practices is needed for assessing the changes in soil fertility. However, the knowledge on how the active, slow and passive pools of SOM respond to long-term fertilization is scarce. Therefore, the present study was designed to isolate the active, slow, and passive pools of soil organic matter through physical fractionation under long-term fertilization. The treatments included; inorganic fertilization (NPK) either alone or combined with a normal dose of manure (MNPK) or a high dose of manure (1.5MNPK) with an unfertilized control (CK) for comparison. The isolated pools were analyzed and compared for their sizes, SOC and TN storage and their contribution to total SOC and TN sequestration. The results revealed that the fertilization enhanced the active, slow and passive pools of SOC and TN and their storage under applied treatments was patterned as 1.5MNK > MNPK > NPK > CK. The highest SOC and TN storage was observed in the active pool, while, greater response to fertilization (in terms of response ratio) was associated with the slow pool. Results show that fertilization enhanced the proportion of SOC and TN stocks to bulk SOC and TN stocks in active and slow pools, while a diminishing trend was found for passive pools. Moreover, the highest response ratio was found for TN sequestration in each pool as compared to SOC, suggesting preferential accumulation of TN over SOC in the studied soil. Nevertheless, the highest SOC and TN storage took place in the active pool. The slow pool showed greater response to applied fertilizer, with the highest values being observed under 1.5MNPK. This study concluded that long-term manure + inorganic fertilization is crucial for enhancing C and N sequestration by altering the size and response of SOM pools.

Keywords

Physical fractionation; SOM pools; Climate change; Mollisol; SOM stability

Authors

MUSTAFA, A.; SAEED, Q.; NESHAD, M.T.K.; NAN, S.;HONGJUN, G.; PING, Y.; NAVEED, M.;MINGGANG, X.; DELAGO, A.N.

Released

1. 1. 2023

Publisher

ACADEMIC PRESS INC ELSEVIER SCIENCE

Location

SAN DIEGO

ISBN

0013-9351

Periodical

ENVIRONMENTAL RESEARCH

Year of study

216

Number

2023

State

United States of America

Pages from

114626

Pages to

114634

Pages count

9

URL

https://www.sciencedirect.com/science/article/pii/S0013935122019533

BibTex

@article{BUT197046,
  author="MUSTAFA, A. and SAEED, Q. and NESHAD, M.T.K. and NAN, S. and HONGJUN, G. and PING, Y. and NAVEED, M. and MINGGANG, X. and DELAGO, A.N.",
  title="Physically separated soil organic matter pools as indicators of carbon and nitrogen change under long-term fertilization in a Chinese Mollisol",
  journal="ENVIRONMENTAL RESEARCH",
  year="2023",
  volume="216",
  number="2023",
  pages="9",
  doi="10.1016/j.envres.2022.114626",
  issn="0013-9351",
  url="https://www.sciencedirect.com/science/article/pii/S0013935122019533"
}