Differential response of soil respiration to nitrogen and phosphorus addition in a highly phosphorus-limited subtropical forest, China

Heming Liu; Guiyao Zhou; Shahla Hosseini Bai; Jingjing Song; Yijing Shang; Miao He; Xihua Wang; Zemei Zheng

doi:10.1016/j.foreco.2019.06.020

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Differential response of soil respiration to nitrogen and phosphorus addition in a highly phosphorus-limited subtropical forest, China

Journal article

Peer reviewed

Differential response of soil respiration to nitrogen and phosphorus addition in a highly phosphorus-limited subtropical forest, China

Heming Liu, Guiyao Zhou, Shahla Hosseini Bai, Jingjing Song, Yijing Shang, Miao He, Xihua Wang and Zemei Zheng

Forest Ecology and Management, Vol.448, pp.499-508

2019

DOI: https://doi.org/10.1016/j.foreco.2019.06.020

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Abstract

microbial respiration

fine root biomass

C sequestration

microbial biomass carbon

subtropical forests

Understanding feedback between terrestrial carbon (C) cycle and climate change is linked to the effects of nitrogen (N) and phosphorus (P) on soil respiration (Rs). However, the individual and interactive effects of N and P additions on soil respiration and its components (autotrophic [Ra] and heterotrophic respiration [Rh]) are not fully understood, especially in highly P limited subtropical forests. In this study, both field experiment and laboratory incubation (at 15°C and 25°C temperatures) were undertaken to examine the effects of N, P and N + P additions on Rs and Rh. Our results showed that N addition significantly increased Rs by 21.09%, but P and N + P additions exhibited no effects on Rs under field conditions. Under laboratory condition, N addition significantly suppressed Rh whereas P and N + P additions increased Rh compared with control. Meanwhile, N and P additions exhibited an antagonistic interaction on Rs, but N and P additions synergistically affected Rh under laboratory incubations at both incubation temperatures of 15°C and 25°C. Cumulative Rh was negatively correlated with fine root biomass, but was positively correlated with microbial biomass carbon regardless of incubation temperatures. Our findings indicated that both individual and interactive effects of N and P additions on Rs and Rh were required to be considered to improve prediction of N and P effects on forest C dynamics in the highly P limited subtropical forests.

Details

Title: Differential response of soil respiration to nitrogen and phosphorus addition in a highly phosphorus-limited subtropical forest, China
Authors: Heming Liu (Author) - East China Normal University, China
Guiyao Zhou (Author) - East China Normal University, China
Shahla Hosseini Bai (Author) - University of the Sunshine Coast
Jingjing Song (Author) - East China Normal University, China
Yijing Shang (Author) - East China Normal University, China
Miao He (Author) - East China Normal University, China
Xihua Wang (Author) - East China Normal University, China
Zemei Zheng (Author) - East China Normal University, China
Publication details: Forest Ecology and Management, Vol.448, pp.499-508
Publisher: Elsevier BV
Date published: 2019
DOI: 10.1016/j.foreco.2019.06.020
ISSN: 0378-1127; 0378-1127
Organisation Unit: School of Science and Engineering - Legacy; University of the Sunshine Coast, Queensland
Language: English
Record Identifier: 99451432102621
Output Type: Journal article

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Collaboration types: Domestic collaboration; International collaboration
Web Of Science research areas: Forestry

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