Hydrologic gradient changes of soil respiration in typical steppes of Eurasia

Li, Mingyang; Liu, Tingxi; Duan, Limin; Ma, Long; Wang, Yixuan; Zhou, Yajun; Li, Yuankang; Zhao, Xinyu; Wang, Xueqin; Wang, Guoqiang; Lei, Huimin

doi:10.1016/j.scitotenv.2021.148684

Cited by 8 publications

(1 citation statement)

References 77 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This complex biochemical process includes autotrophic (root respiration and root microbial respiration) and heterotrophic respiration (microbial and animal respiration) [ 9 ], and can be affected by the structure and activity of soil biomes, organic matter, and vegetation, as well as the soil physicochemical characteristics, such as soil temperature, moisture, nutrients, and pH [ 10 , 11 ]. Among them, soil temperature and moisture are the main factors affecting soil respiration, which in turn is affected by vegetation structure [ 12 ]. However, the potential impact of alien plant invasion on soil respiration is so far unclear.…”

Section: Introductionmentioning

confidence: 99%

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

et al. 2022

IJERPH

View full text Add to dashboard Cite

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.

show abstract

Section: Introductionmentioning

confidence: 99%