Differential Effects of Coarse Woody Debris on Microbial and Soil Properties in Pinus densiflora Sieb. et Zucc. Forests

Kim, Seong-Jun; Li, Guanlin; Han, Seung Hyun; Chang, Hyo Ihl; Kim, Hyun Jun; Son, Yowhan

doi:10.3390/f8080292

Cited by 10 publications

(8 citation statements)

References 33 publications

(51 reference statements)

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“…This is a common finding with CWD studies that have underlying soil properties overshadowing the effects of CWD in both natural and reclaimed forests [2,5]. We did, however, find some significant differences due to CWD applications and these responses varied by CWD levels especially in the plant community including both native and non-native species.…”

Section: Discussioncontrasting

confidence: 41%

“…Also, the use of CWD extract in the incubation study rather than CWD fragments on the soil surface as in our field study may have altered nutrient cycling processes. Other studies have also shown lower inorganic N under CWD [2,5] measured using standard extraction procedures in field studies. Our integrative measure of soil nutrient supply using ionic membranes depends on water moving through soil to allow nutrients to absorb to the membrane.…”

Section: Discussionmentioning

confidence: 99%

“…This dead wood has been shown to influence the plant community indirectly through the provisioning of suitable microsites for seedling establishment [1,2] as well as directly as a seed source for canopy seed-banking tree species such as jack pine and black spruce [3]. In terms of soil nutrients, CWD influences soil N and P cycles [4] through changes in mineralization and immobilization rates of these nutrients in which CWD is often associated with decreased inorganic N. This indicates net immobilization [2,5]. These nutrient cycling processes, in turn, are largely controlled through the microbial community, which has also been shown to be influenced by CWD [6].…”

Section: Introductionmentioning

confidence: 99%

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Coarse Woody Debris as a Land Reclamation Amendment at an Oil Sands Mining Operation in Boreal Alberta, Canada

Pinno

Gupta

2018

Sustainability

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Abstract:Coarse woody debris (CWD) is an important component of natural forests and is now being used in reclaiming oil sands land to control erosion, enhance diversity, and function as longer term storage of organic matter. However, the impact of woody debris on reclaimed ecosystems may vary depending on the amount applied and the soil it is applied to. We studied the impact on the plant community (including tree regeneration and understory plants) and soil properties of four levels of CWD cover (None, Low, Moderate, High) on two reclamation soils (forest floor-mineral mix and peat-mineral mix) and natural post-fire soils. Significant differences were observed among soil types in terms of the plant community and soil properties but fewer differences were attributable to CWD. However, overall native plant species' diversity and abundance decreased with High CWD while cover of non-native species on the reclaimed soils greatly decreased with Low CWD. Natural seedling regeneration density of trembling aspen was unaffected by CWD on both reclamation soil types. The soil nutrient supply rates and soil moisture were significantly different among soil types but there were no differences among debris treatments while soil temperature decreased with CWD. Overall, a Low (up to 30% ground cover) woody debris application appears to be optimal for maintaining native plant species diversity and abundance while controlling undesirable plant species.

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Section: Discussioncontrasting

confidence: 41%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Coarse Woody Debris as a Land Reclamation Amendment at an Oil Sands Mining Operation in Boreal Alberta, Canada

Pinno

Gupta

2018

Sustainability

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“…Concentrations of microbial biomass C (MBC) and N (MBN) were determined by the fumigation-extraction method (Brookes et al 1985;Vance et al 1987), as modified by other studies (Kim et al 2017;Perakis and Hedin 2001;Witt et al 2000). Field-moist samples (8 g) were fumigated with alcohol-free chloroform for 24 h at room temperature and atmospheric pressure.…”

Section: Microbial Biomassmentioning

confidence: 99%

Thinning affects microbial biomass without changing enzyme activity in the soil of Pinus densiflora Sieb. et Zucc. forests after 7 years

Kim

Han

et al. 2018

Annals of Forest Science

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& Key message Thinning increased microbial biomass but did not alter enzyme activities in the soil of Pinus densiflora Sieb. et Zucc. forests in South Korea. This effect of thinning was larger under a relatively heavy thinning intensity, but there was divergence in the magnitude between sites. & Context The balance between microbial biomass accumulation and enzymatic C and N assimilation determines the level of bioavailable C and N. However, the effects of thinning on these parameters remain contradictory and unconfirmed. & Aims The effects of thinning intensity on microbial biomass and enzyme activity were assessed in the soil of Pinus densiflora Sieb. et Zucc. forests in South Korea. & Methods Un-thinned control and 15 and 30% basal area thinning treatments were applied to two 51-to 60-year-old P. densiflora forests with different management histories, topographies, rainfall amounts, and soils. Seven years after thinning, microbial biomass and activities of N-acetyl-glucosaminidase, β-glucosidase, cellobiohydrolase, β-xylosidase, phenol oxidase, and peroxidase were measured before and after seasonally concentrated rains and at 0-10 cm depth. & Results Microbial biomass was generally highest under the 30% basal area thinning and lowest under the control, and was positively correlated to total soil C and N. The increase in microbial biomass was lower at the site displaying sandier, drier, and more acidic soils and retaining smaller amounts of thinning residue. Conversely, thinning had no significant effect on activities of all enzymes at both sites in both periods.

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“…These trends demonstrated that the response of various microbial biomass ratios to thinning might inconsistently change with the increasing of thinning intensity [36], which was consistent with previous studies. Furthermore, our results may also suggest that the inconsistent changes in microbial stoichiometry characteristics after thinning practice could be attributed to changes in water content, nutrient concentration, and microenvironment [56][57][58]. Moreover, forest thinning has a significant impact on MBC: MBN and MBC: MBP, which might indicate that the accumulation of MBC content in soil is more sensitive to thinning practice than the concentration of MBN and MBP in soil.…”

Section: Variation Of Soil Properties and Stoichiometry Following Thimentioning

confidence: 76%

Soil Element Stoichiometry Drives Bacterial Community Composition Following Thinning in A Larix Plantation in the Subalpine Regions of Northern China

Cai

Peng

Cheng

et al. 2020

Forests

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It is well established that forest thinning alters aboveground plant community composition and soil resource availability. However, how it regulates the composition and diversity of belowground microbial communities remains unclear. To quantify the effects of thinning on soil bacterial groups and the underlying mechanisms of these effects, this research was conducted in a Larix principis-rupprechtii Mayr. plantation with various thinning intensities, including a control (0% tree removal), a low-intensity treatment (15% tree removal), a medium-intensity treatment (35% tree removal), and a high-intensity treatment (50% tree removal). Compared to the control, the medium and high intensity thinning treatments significantly improved soil moisture, nutrient concentrations (including soil total carbon, nitrogen, phosphorus, and ammonium nitrogen), microbial biomass, and elemental stoichiometry ratios. The abundance and diversity of bacterial communities peaked in the medium-intensity treatment. Thinning also had strong effects on dominant bacterial groups at the phylum level. For instance, Bacteroidetes and Nitrospirae were significantly increased in the medium-intensity treatment (MIT), while the Gemmatimonadetes were significantly decreased in the low-intensity treatment (LIT). Combining Spearman correlation analysis and redundancy analysis demonstrated that thinning could facilitate the assembly of unique bacterial communities, and these shifts in microorganisms could probably be attributed to corresponding changes in soil resource stoichiometry. In conclusion, this study provides novel evidence that rational thinning could promote belowground bacterial community diversity and that elemental stoichiometry is an important indicator in shaping forest soil bacterial communities.

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Differential Effects of Coarse Woody Debris on Microbial and Soil Properties in Pinus densiflora Sieb. et Zucc. Forests

Cited by 10 publications

References 33 publications

Coarse Woody Debris as a Land Reclamation Amendment at an Oil Sands Mining Operation in Boreal Alberta, Canada

Coarse Woody Debris as a Land Reclamation Amendment at an Oil Sands Mining Operation in Boreal Alberta, Canada

Thinning affects microbial biomass without changing enzyme activity in the soil of Pinus densiflora Sieb. et Zucc. forests after 7 years

Soil Element Stoichiometry Drives Bacterial Community Composition Following Thinning in A Larix Plantation in the Subalpine Regions of Northern China

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