Spectral analysis of coniferous foliage and possible links to soil chemistry: Are spectral chlorophyll indices related to forest floor dissolved organic C and N?

2008 ◽  
Vol 404 (2-3) ◽  
pp. 424-432 ◽  
Author(s):  
Jana Albrechtova ◽  
Zdeněk Seidl ◽  
Jacqueline Aitkenhead-Peterson ◽  
Zuzana Lhotáková ◽  
Barrett N. Rock ◽  
...  
Keyword(s):  
Spectral Analysis ◽  
Forest Floor ◽  
Soil Chemistry ◽  
Organic C ◽  
Dissolved Organic C ◽  
C And N

scholarly journals Intra-Annual Variation in Soil C, N and Nutrients Pools after Prescribed Fire in a Mississippi Longleaf Pine (Pinus palustris Mill.) Plantation

Forests ◽  
2020 ◽  
Vol 11 (2) ◽  
pp. 181
Author(s):  
John R. Butnor ◽  
Kurt H. Johnsen ◽  
Christopher A. Maier ◽  
C. Dana Nelson
Keyword(s):  
Prescribed Fire ◽  
Forest Floor ◽  
Soil Chemistry ◽  
Annual Variation ◽  
Longleaf Pine ◽  
Pinus Palustris ◽  
Southern Pine ◽  
Soil C ◽  
Soil C And N ◽  
C And N

Prescribed fire is an essential tool that is widely used for longleaf pine (Pinus palustris Mill.) stand management; periodic burning serves to reduce competition from woody shrubs and fire-intolerant trees and enhance herbaceous diversity. Low-intensity, prescribed burning is thought to have minimal long-term impact on soil chemistry in southern pine forests, although few studies report the intra-annual variation in soil chemistry after burning. We monitored changes in C, N, oxidation resistant C (CR), pH and elemental nutrients in the forest floor and soil (0–5, 5–10 cm depths) before and after burning (1, 3, 6, 12 months) in a mature longleaf pine plantation at the Harrison Experimental Forest, near Saucier, Mississippi. Prescribed fire consumed much of the forest floor (11.3 Mg ha−1; −69%), increased soil pH and caused a pulse of C, N and elemental nutrients to flow to the near surface soils. In the initial one to three months post-burn coinciding with the start of the growing season, retention of nutrients by soil peaked. Most of the N (93%), Ca (88%), K (96%) and Mg (101%), roughly half of the P (48%) and Mn (52%) and 25% of the C lost from the forest floor were detected in the soil and apparently not lost to volatilization. By month 12, soil C and N pools were not different at depths of 0–5 cm but declined significantly below pre-burn levels at depths of 5–10 cm, C −36% (p < 0.0001), N −26% (p = 0.003), contrary to other examples in southern pine ecosystems. In the upper 5 cm of soil, only Cu (−49%) remained significantly lower than pre-burn contents by month 12, at depths of 5–10 cm, Cu (−76%), Fe (−22%), K (−51%), Mg (−57%), Mn (−82%) and P (−52%) remain lower at month 12 than pre-burn contents. Burning did not increase soil CR content, conversely significant declines in CR occurred. It appears that recovery of soil C and N pools post-burn will require more time on this site than other southern pine forests.

scholarly journals Response of Soil C and N, Dissolved Organic C and N, and Inorganic N to Short-Term Experimental Warming in an Alpine Meadow on the Tibetan Plateau

2014 ◽  
Vol 2014 ◽  
pp. 1-10 ◽  
Author(s):  
Cheng-Qun Yu ◽  
Zhen-Xi Shen ◽  
Xian-Zhou Zhang ◽  
Wei Sun ◽  
Gang Fu
Keyword(s):  
Alpine Meadow ◽  
The Tibetan Plateau ◽  
Experimental Warming ◽  
Inorganic N ◽  
Short Term ◽  
Total N ◽  
Organic C ◽  
Dissolved Organic C ◽  
Short Period ◽  
C And N

Although alpine meadows of Tibet are expected to be strongly affected by climatic warming, it remains unclear how soil organic C (SOC), total N (TN), ammonium N(NH4+-N), nitrate N(NO3+-N), and dissolved organic C (DOC) and N (DON) respond to warming. This study aims to investigate the responses of these C and N pools to short-term experimental warming in an alpine meadow of Tibet. A warming experiment using open top chambers was conducted in an alpine meadow at three elevations (i.e., a low (4313 m), mid-(4513 m), and high (4693 m) elevation) in May 2010. Topsoil (0–20 cm depth) samples were collected in July–September 2011. Experimental warming increased soil temperature by ~1–1.4°C but decreased soil moisture by ~0.04 m3m−3. Experimental warming had little effects on SOC, TN, DOC, and DON, which may be related to lower warming magnitude, the short period of warming treatment, and experimental warming-induced soil drying by decreasing soil microbial activity. Experimental warming decreased significantly inorganic N at the two lower elevations,but had negligible effect at the high elevation. Our findings suggested that the effects of short-term experimental warming on SOC, TN and dissolved organic matter were insignificant, only affecting inorganic forms.

Vertical transport of dissolved organic C and N under long-term N amendments in pine and hardwood forests

1996 ◽  
Vol 35 (3) ◽  
pp. 471-505 ◽  
Author(s):  
William S. Currie ◽  
John D. Aber ◽  
William H. McDowell ◽  
Richard D. Boone ◽  
Alison H. Magill
Keyword(s):  
Hardwood Forests ◽  
Vertical Transport ◽  
Organic C ◽  
Dissolved Organic C ◽  
C And N

Effects of manganese addition on carbon release from forest floor horizons

2011 ◽  
Vol 41 (3) ◽  
pp. 643-648 ◽  
Author(s):  
Florence Trum ◽  
Hugues Titeux ◽  
Jean-Thomas Cornelis ◽  
Bruno Delvaux
Keyword(s):  
Forest Floor ◽  
European Beech ◽  
Organic C ◽  
Dissolved Organic C ◽  
Carbon Release ◽  
Fagus Sylvatica L ◽  
Forest Floors ◽  
Degrading System ◽  
The Impact ◽  
Clear Increase

Lignin concentration in organic residues largely controls their decomposition. Mn2+ may well play a key role in ligninolysis because it is a cofactor of manganese peroxidase, an enzyme of the lignin-degrading system. This study aims to investigate the effects of Mn2+ addition on forest floor horizon decomposition during laboratory incubation. Therefore, we sampled two distinct forest floors from European beech ( Fagus sylvatica L.) stands: a mor and a moder. Lignin and Mn concentrations in forest floor upper layer were significantly larger in moder than in mor. Three horizons from each forest floor were separately incubated with or without Mn2+ addition (250 mg Mn·kg dry matter–1) and the release of both CO2 and dissolved organic C was measured. The dissolved organic C release was not impacted by the Mn2+ addition, while a clear increase in CO2 release from specific horizons was observed. Our data suggest that the impact of the Mn2+ addition depends on (i) the forest floor type and on (ii) the organic matter decomposition stage.

Impact of a pine lappet (Dendrolimus pini) mass outbreak on C and N fluxes to the forest floor and soil microbial properties in a Scots pine forest in Germany

2008 ◽  
Vol 38 (7) ◽  
pp. 1829-1841 ◽  
Author(s):  
Anne le Mellec ◽  
Beate Michalzik
Keyword(s):  
Scots Pine ◽  
Forest Floor ◽  
Herbivorous Insect ◽  
Adenylate Energy Charge ◽  
Organic C ◽  
Microbial Properties ◽  
Soil Microbial ◽  
N Fluxes ◽  
C And N ◽  
Soil Microbial Properties

Herbivorous insect infestations significantly alter element and nutrient cycling in forests, thus directly and indirectly affecting ecosystem functioning. In this paper, we report on the herbivore-mediated transfer of carbon (C) and nitrogen (N) from the canopy to the forest floor and its influence on soil microbial activity during a pine lappet ( Dendrolimus pini L.) infestation. Over the course of 6 months, we followed C and N fluxes in bulk deposition, throughfall, and green fall (green needle debris dropped during herbivory) together with solid frass (insect faeces) in an 80-year-old Scots pine ( Pinus silvestris L.) forest. Compared with the control, herbivore defoliation significantly doubled throughfall inputs of total and dissolved organic C and N over the study period. Frass plus green-fall C and N fluxes peaked in June–July at 110 kg C·ha–1 and 2.3 kg N·ha–1, respectively. Randomized intervention analysis revealed no significant effects of herbivory on soil microbial properties, except for adenylate energy charge, which showed slightly higher values under herbivory. This study demonstrates the importance of canopy herbivory on overall C and N inputs to forest ecosystems, particularly in altering the timing and quality of the organic material reaching the forest floor and potentially affecting belowground processes.

Linking Foliar Chemistry to Forest Floor Solid and Solution Phase Organic C and N in Picea abies [L.] Karst Stands in Northern Bohemia

2006 ◽  
Vol 283 (1-2) ◽  
pp. 187-201 ◽  
Author(s):  
Jacqueline A. Aitkenhead-Peterson ◽  
Jess E. Alexander ◽  
Jana Albrechtová ◽  
Pavel Krám ◽  
Barrett Rock ◽  
...  
Keyword(s):  
Picea Abies ◽  
Forest Floor ◽  
Solution Phase ◽  
Foliar Chemistry ◽  
Organic C ◽  
C And N

scholarly journals Great fraction of dissolved organic C and N in the primary per-humid Chamaecyparis forest soil

2015 ◽  
Vol 56 (1) ◽  
Author(s):  
Chih-Wei Tsai ◽  
Guanglong Tian ◽  
Chih-Yu Chiu
Keyword(s):  
Forest Soil ◽  
Organic C ◽  
Dissolved Organic C ◽  
C And N

Manipulation of rhizosphere organisms to enhance glomalin production and C sequestration: Pitfalls and promises

2014 ◽  
Vol 94 (6) ◽  
pp. 1025-1032 ◽  
Author(s):  
F. L. Walley ◽  
A. W. Gillespie ◽  
Adekunbi B. Adetona ◽  
J. J. Germida ◽  
R. E. Farrell
Keyword(s):  
Plant Growth ◽  
Mycorrhizal Fungi ◽  
Plant Growth Promoting Rhizobacteria ◽  
C Sequestration ◽  
Ionization Mass ◽  
Edge Structure ◽  
Organic C ◽  
Soil C ◽  
N Storage ◽  
C And N

Walley, F. L., Gillespie, A. W., Adetona, A. B., Germida, J. J. and Farrell, R. E. 2014. Manipulation of rhizosphere organisms to enhance glomalin production and C-sequestration: Pitfalls and promises. Can. J. Plant Sci. 94: 1025–1032. Arbuscular mycorrhizal fungi (AMF) reportedly produce glomalin, a glycoprotein that has the potential to increase soil carbon (C) and nitrogen (N) storage. We hypothesized that interactions between rhizosphere microorganisms, such as plant growth-promoting rhizobacteria (PGPR), and AMF, would influence glomalin production. Our objectives were to determine the effects of AMF/PGPR interactions on plant growth and glomalin production in the rhizosphere of pea (Pisum sativum L.) with the goal of enhancing C and N storage in the rhizosphere. One component of the study focussed on the molecular characterization of glomalin and glomalin-related soil protein (GRSP) using complementary synchrotron-based N and C X-ray absorption near-edge structure (XANES) spectroscopy, pyrolysis field ionization mass spectrometry (Py-FIMS), and proteomics techniques to characterize specific organic C and N fractions associated with glomalin production. Our research ultimately led us to conclude that the proteinaceous material extracted, and characterized in the literature, as GRSP is not exclusively of AMF origin. Our research supports the established concept that GRSP is important to soil quality, and C and N storage, irrespective of origin. However, efforts to manipulate this important soil C pool will remain compromised until we more clearly elucidate the chemical nature and origin of this resource.

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