Thinning but not understory removal increased heterotrophic respiration and total soil respiration in Pinus massoniana stands

Lei, Lei; Xiao, Wei; Zeng, Lixiong; Zhu, Jianhua; Huang, Zhilin; Cheng, Rongjun; Gao, Shangkun; Li, Mai‐He

doi:10.1016/j.scitotenv.2017.10.092

Cited by 65 publications

(43 citation statements)

References 66 publications

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“…Kim, et al [14] reported that thinning promotes the accumulation of microbial biomass, and is positively correlated with total soil C and N. Furthermore, this effect of thinning was found to increase with thinning intensity. Due to an increase in rainwater and a reduction of transpiration [15], soil moisture content in temperate broad-leaved deciduous forests [16], northern evergreen coniferous forests [17], and subtropical forests [18] was significantly higher in heavily thinned forest stands. Increases in soil moisture usually promotes microbial activity, thus, favoring P mobilization, ion transport, and plant P uptake [19].…”

Section: Introductionmentioning

confidence: 99%

Seasonal Variations and Thinning Effects on Soil Phosphorus Fractions in Larix principis-rupprechtii Mayr. Plantations

Tian

Cheng

Han

et al. 2019

Forests

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Thinning is a common management practice in forest ecosystems. However, understanding whether thinning treatment will change the availability of phosphorus (P) in soils, and the effect of thinning on the seasonal dynamics of soil P fractions, are still limited. The objective of the present study was to assess seasonal variations in soil P fractions under different forest thinning management strategies in a Larch (Larix spp.) plantation in northern China. To accomplish this, we examined soil P fractions, soil physical–chemical properties, and litter biomass under control (CK), light (LT), moderate (MT) and high thinning (HT) treatments. Data were collected during the growing season of 2017. We found that most P fractions varied seasonally at different soil depths, with the highest values occurring in the summer and autumn. When compared to CK, MT enhanced the inorganic P (Pi) concentration extracted by resin strip (R-Pi). Labile organic P (Labile Po), moderately labile P and total P (TP) also increased in both MT and HT treatments irrespective of season. In contrast, less-labile Pi and Po fractions were lower in LT than in CK, especially when examining deeper soil layers. Our results suggest that LT leads to a strong ability to utilize Po and less-labile Pi. Moreover, the effect of thinning did not tend to increase with thinning intensity, P availability was maximized at the MT. Ultimately, we show that MT can improve soil P bioavailability and is recommended in Larix principis-rupprechtii Mayr. plantations of North China. Our results emphasize that the effect of thinning management on soil microenvironment is an important basis for evaluating soil nutrients such as soil P bioavailability.

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Section: Introductionmentioning

confidence: 99%

Seasonal Variations and Thinning Effects on Soil Phosphorus Fractions in Larix principis-rupprechtii Mayr. Plantations

Tian

Cheng

Han

et al. 2019

Forests

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“…3 The level of significance corresponding to Lambda-B when performing Monte Carlo test at the 0.05 significance level. 4 Monte Carlo test statistics correspond to Lambda-B at the 0.05 significance level. BG: β-glucosidase, NAG: N-acetyl-β-glucosidase.…”

Section: Variablesmentioning

confidence: 99%

“…Microorganisms are also regarded as sensitive indicators of soil quality for their role in soil carbon processes, including soil organic matter decomposition and turnover [2]. Over the past two decades, soil microbial community and soil carbon process in forest management had been investigated by some studies [3,4], which theorized that soil carbon was affected by forest management through soil microbial regulations. Therefore, the effect of forest management on the soil microbial community structure and function have received increased research attention [5].…”

Section: Introductionmentioning

confidence: 99%

The Effect of Forest Thinning on Soil Microbial Community Structure and Function

Cheng

Han

2019

Forests

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Microbial communities and their associated enzyme activities play key roles in carbon cycling in ecosystems. Forest thinning is likely to change the soil properties and feedbacks on the structure and function of microbial communities, consequently affecting microbial regulation on the soil carbon process. However, few studies have focused on the mechanism of how thinning affects the quantity and stability of soil carbon. To reveal the influence of thinning on soil carbon and to explore the regulated key factors, this study was conducted in a pure Larix principis-rupprechtii Mayr plantation with different thinning intensity (light, medium, and high) in Shanxi province, China. Soil properties (soil pH, soil water content, soil organic carbon, and soil microbial biomass carbon) were measured. Meanwhile, soil microbial communities were examined with the method of phospholipid fatty acid (PLFA), and soil enzyme activities were measured as indicators of soil microbial functions. The results showed that medium and high thinning has positive effects on soil organic carbon, microbial biomass carbon, soil microbial abundance, and soil enzyme activities. Actinomycetes and gram-negative bacteria were the major factors to affect soil microbial community function relating to carbon decomposition. Soil pH contributed to actinomycetes and gram-negative bacteria through direct influences on arbuscular mycorrhizal fungi. Moreover, there were strong correlations between soil pH and microbial community to control soil carbon turnover. The increasing of soil microbial abundance and the microbial regulation on soil carbon in forest thinning need to be considered for sustainable forest management practices in northern China.

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“…Mountainous landforms are very common in Southwest China, which increases habitat heterogeneity while providing an important foundation for biodiversity richness (Myers et al 2000). Pinus massoniana is an important native tree species and the most widely distributed pine tree in Southern China, with strong adaptability and tolerance to harsh environments (Lei et al 2018). P. massoniana forest is the main vegetation type with key ecological and economic importance (such as vegetation construction, timber, resin, etc.)…”

Section: Introductionmentioning

confidence: 99%

Structural and Functional Characteristics of Soil Microbial Community in a Pinus Massoniana Forest at Different Elevations

Zhang¹,

Xu²,

Zou³

2020

Preprint

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BackgroundIn spite of the ecological importance of soil microbial communities, very little data is available on different soil microorganism types along altitudinal gradients on a mountain system with a forest ecosystem to identify the distribution patterns of soil microbial diversity and function. This study aimed to determine the diversity patterns of different soil microorganism types (archaea, bacteria, fungi, viruses) along an altitudinal gradient on Mt. Leigong, a typical mid-subtropical mountain forest ecosystem.ResultsThe richness of bacterial, fungal, and virus community changed in a unimodal pattern, while archaeal community changed in a bimodal pattern with increasing altitude. Euryarchaeota and Thaumarchaeota, Proteobacteria and Acidobacteria, Ascomycota and Basidiomycota, Myoviridae and Podoviridae were abundant taxa in archaeal, bacterial, fungal, and virus community, respectively. Amino acid transport and metabolism, and energy production and conversion were the predominant categories as per Nonsupervised Orthologous Groups (NOG) function gene-annotation. Carbohydrate metabolism, global and overview map, and amino acid metabolism, were predominant categories in the Kyoto encyclopedia of genes and genomes-based (KEGG) pathways. Glycosyl transferase and glycoside hydrolase were predominant categories among carbohydrate enzyme-functional genes. Cluster analysis, redundancy analysis, and Network analysis showed obvious differences in composition, structure, and function of different soil microorganism types in the P. massoniana forest on Mt. Leigong.ConclusionsThese results indicate that different soil microorganism types (archaea, bacteria, fungi, viruses) along the altitudinal gradient have an obvious different distribution patterns in the typical mid-subtropical mountain coniferous forest soil.

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Thinning but not understory removal increased heterotrophic respiration and total soil respiration in Pinus massoniana stands

Cited by 65 publications

References 66 publications

Seasonal Variations and Thinning Effects on Soil Phosphorus Fractions in Larix principis-rupprechtii Mayr. Plantations

Seasonal Variations and Thinning Effects on Soil Phosphorus Fractions in Larix principis-rupprechtii Mayr. Plantations

The Effect of Forest Thinning on Soil Microbial Community Structure and Function

Structural and Functional Characteristics of Soil Microbial Community in a Pinus Massoniana Forest at Different Elevations

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