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

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.

Effect of litter decomposition on mowing and plant composition change during Solidago stand restoration

“…The two invasive species of North American provenance that are found in Central Europe most frequently are Solidago gigantea Aiton (Giant goldenrod) and Solidago canadensis L. (Canadian goldenrod) (Tokarska-Guzik et al, 2014;Lukash et al, 2021;Meyer 2022;Popay & Parker, 2022). S. canadensis may decrease soil respiration, which affects soil carbon cycling through substrates emitted by plants, as well as by competing with native plants and soil microorganisms for the available substrate (Hu et al, 2022b;Xu et al, 2022). S. canadensis invasion has been shown to reduce soil organic carbon, total nitrogen, and cation exchange capacity (Xie et al, 2022).…”

Soil Properties of Fallow Land Invaded by Black Cherry (Padus serotina (Ehrh.) Borkh.)

“…The most common plant invaders currently observed in Europe and Asia are species of goldenrod (Solidago canadensis L. and Solidago gigantea Aiton) [26,27]. In Europe, they enter abandoned land and form dense single-species fields [26].…”

Regulation of the Soil Microbial Metabolism Through Alterations in the Vegetative Community in Wetlands

“…Thus, the coastal wetland soil carbon pool is sensitive to the vegetation community because plants are the most critical contributors to the soil carbon pool. In recent decades, global coastal wetland vegetation communities have experienced considerable changes, including degradation and/or succession, due to human interference and the invasion of alien species [7][8][9]. These alterations in wetland vegetation communities inevitably affect coastal wetlands' carbon sequestration function, ultimately exacerbating climate change.…”