Effects of multispecies restoration on soil extracellular enzyme activity stoichiometry in Pinus massoniana plantations of subtropical China

Wu, Linfang; Zou, Bingzhang; Wang, Sirong; Zhou, Luhong; Zheng, Yong; Huang, Zhiyin; He, Ji‐Zheng

doi:10.1016/j.soilbio.2023.108967

Cited by 10 publications

(4 citation statements)

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“…EEA stoichiometric ratios reflect soil microbial nutrient acquisition and limitation status [9]. Numerous studies have investigated forest EEA and its stoichiometry [16,21,[36][37][38]. In our study, soil microbes were co-limited by C and P (Figure 3).…”

Section: Nutrient Limitation Status Of Soil Microbesmentioning

confidence: 69%

“…Notably, bulk density emerged as the most significant factor in our study site. While bulk density may affect EEA by altering soil mineralization, some studies asserted that EEA and its stoichiometry solely correlate with soil pH [43,44], while others cited influences from soil nutrients and biological factors (e.g., vegetation, litter, and microbial community characteristics) [14,[17][18][19][20][21]23]. Therefore, future studies aiming to elucidate the mechanisms of microbial C and P limitation in subtropical secondary forest restoration should incorporate the nutrient characteristics of plant leaves, litter components, soil microbes, and various SOC components.…”

Section: Nutrient Limitation Status Of Soil Microbesmentioning

confidence: 99%

“…Climate factors wield greater influence on a broad scale compared to soil factors [14,16]. However, regionally, alterations in soil physicochemical properties (e.g., pH, soil moisture, soil C and N contents) directly or indirectly affect EEA and stoichiometric ratios [17][18][19][20][21], with these factors being highly responsive to climate shifts [6]. Xu et al [22] observed significant negative correlations between the C/P and N/P of EEA and the soil C/P and soil N/P, respectively, in their study of Chinese forest ecosystems.…”

Section: Introductionmentioning

confidence: 99%

“…Xu et al [22] observed significant negative correlations between the C/P and N/P of EEA and the soil C/P and soil N/P, respectively, in their study of Chinese forest ecosystems. Additionally, vegetation diversity, species richness, and genus characteristics contribute to understanding changes in regionalscale EEA and stoichiometric ratios [21,23].…”

Section: Introductionmentioning

confidence: 99%

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Restoring Subtropical Forests: Alleviating P Limitation and Introducing C Limitation Using Evergreen Broad-Leaved Tree Species

Yang,

Xia,

Fan

et al. 2024

Forests

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Determining which species to utilize for the artificial restoration of subtropical secondary forests has become a focal point in forestry and ecology. To compare the effects of the subtropical secondary forest artificial restoration model on soil microbial nutrient acquisition and limitation, we examined secondary forests (CKs), evergreen coniferous forests (GCPs), evergreen coniferous mixed broad-leaved forests (GCBMs), evergreen mixed broad-leaved forests (GBMs), and natural deciduous broad-leaved mixed forests (DBMs) as research subjects. Among them, GCPs, GCBMs, and GBMs were dominated by the species of the early, middle, and climax stages of subtropical forest succession, respectively. The activities and stoichiometry of β-1,4-glucosidase (BG), β-1,4-N-acetylglucosaminidase (NAG), leucine aminopeptidase (LAP), and acid phosphatase (ACP) in the topsoil were analyzed. The results showed that the forest type significantly affects the activities of BG and LAP rather than NAG or ACP. The BG activity in DBMs was the lowest, while the LAP activity in CKs was significantly higher than that in plantations. Furthermore, the nutrient limitation of microbes was quantitatively analyzed by using the vector analysis of enzyme stoichiometry. The soil microbes in the study area were co-limited by C and P, and the nutrient limitation was in the order of C > P > N. Among the forests, the enzyme stoichiometric ratios in GCPs and DBMs were closest to 1:1:1. From CKs to GBMs, the microbial C limitation was increased, while the P limitation was decreased. The C limitation in DBMs was slightly lower than that in CKs. Overall, the P limitation in evergreen plantations was less than that in CKs. The soil bulk density, C/P, and N/P significantly influenced enzyme activities and stoichiometry. These results suggest that the artificial restoration of subtropical forests using evergreen species alleviated P limitation, while using deciduous broad-leaved species offered potential for alleviating microbial C limitation. Compared with evergreen broad-leaved species, employing pioneer and mid-successional or deciduous broad-leaved species can better achieve balanced microbial nutrient requirements.

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