Canada Goldenrod Invasion Regulates the Effects of Soil Moisture on Soil Respiration

Sixuan Xu, Kexin Li, Guanlin Li (), Zhiyuan Hu, Jiaqi Zhang, Babar Iqbal and Daolin Du ()
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Sixuan Xu: School of Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China
Kexin Li: School of Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China
Guanlin Li: Key Laboratory of Environmental Biotechnology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
Zhiyuan Hu: WM Environmental Molecular Diagnosis Co., Ltd., Suzhou 215558, China
Jiaqi Zhang: Ministry of Education Key Laboratory for Ecology of Tropical Islands, Key Laboratory of Tropical Animal and Plant Ecology of Hainan Province, College of Life Sciences, Hainan Normal University, Haikou 571158, China
Babar Iqbal: School of Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China
Daolin Du: School of Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China

IJERPH, 2022, vol. 19, issue 23, 1-12

Abstract: Canada goldenrod ( Solidago canadensis L.) is considered one of the most deleterious and invasive species worldwide, and invasion of riparian wetlands by S. canadensis can reduce vegetation diversity and alter soil nutrient cycling. However, little is known about how S. canadensis invasion affects soil carbon cycle processes, such as soil respiration, in a riparian wetland. This study was conducted to investigate the effects of different degrees of S. canadensis invasion on soil respiration under different moisture conditions. Soil respiration rate (heterotrophic and autotrophic respiration) was measured using a closed-chamber method. S. canadensis invasion considerably reduced soil respiration under all moisture conditions. The inhibition effect on autotrophic respiration was higher than that on heterotrophic respiration. The water level gradient affects the soil autotrophic respiration, thereby affecting the soil respiration rate. The changes in soil respiration may be related to the alteration in the effective substrate of the soil substrate induced by the invasion of S. canadensis . While the effects of S. canadensis invasion were regulated by the fluctuation in moisture conditions. Our results implied that S. canadensis invasion could reduce the soil respiration, which further potentially affect the carbon sequestration in the riparian wetlands. Thus, the present study provided a reference for predicting the dynamics of carbon cycling during S. canadensis invasion and constituted a scientific basis for the sustainable development and management of riparian wetlands invaded by alien plants.

Keywords: alien plant invasion; invasive effect; soil autotrophic respiration; soil heterotrophic respiration (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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