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Dissertations / Theses on the topic 'Humus Soil dynamics Forest soils'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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1

Faituri, Mikaeel Y. "Soil organic matter in Mediterranean and Scandinavian forest ecosystems : dynamics of organic matter, nutrients, and monomeric phenolic compounds /." Uppsala : Swedish Univ. of Agricultural Sciences (Sveriges lantbruksuniv.), 2002. http://epsilon.slu.se/avh/2002/91-576-6320-3.pdf.

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2

Klinka, Karel. "Forest floor dynamics across a chronosequence in the coastal western hemlock zone." Forest Sciences Department, University of British Columbia, 1997. http://hdl.handle.net/2429/653.

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The forest floor represents the uppermost organic and organicenriched mineral soil horizons. They have been formed by the deposition of organic material and the subsequent biologically mediated decomposition. The forest floor influences rooting-zone temperature, aeration, moisture, and nutrient conditions, and hence, forest productivity. Considering the importance of the forest floor, and the fact that it is exposed to disturbance (being the surface layer), we need to assess the potential impacts our logging practices may have. Clearcutting, one of the contentious silvicultural practices

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3

Koch, Juliane. "Humus Dynamics along Forest Conversion Sequences in the Lowland and Ore Mountain Region of Saxony, Germany." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2007. http://nbn-resolving.de/urn:nbn:de:swb:14-1185189101438-82589.

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Vor dem Hintergrund der steigenden CO2-Konzentration in der Atmosphäre gewinnt die Rolle des Waldes als C-Speicher zunehmend an Bedeutung. Eine besonders wichtige Funktion kommt hierbei dem Boden zu, denn Böden speichern weltweit mehr C als Vegetation und boden zusammen (Brady and Weil, 2002). Im Sinne einer nachhaltigen Waldbewirtschaftung werden in Sachsen derzeit großflächig die bestehenden Nadelforsten in naturnahe, strukturierte Laub- und Laubmischwälder umgewandelt. Ziel dieser Arbeit war es daher, baumarten- und bewirtschaftungsspezifische Effekte auf den Humus und die C-Speicherung im

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4

Koch, Juliane. "Humus Dynamics along Forest Conversion Sequences in the Lowland and Ore Mountain Region of Saxony, Germany." Doctoral thesis, Technische Universität Dresden, 2005. https://tud.qucosa.de/id/qucosa%3A25012.

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Vor dem Hintergrund der steigenden CO2-Konzentration in der Atmosphäre gewinnt die Rolle des Waldes als C-Speicher zunehmend an Bedeutung. Eine besonders wichtige Funktion kommt hierbei dem Boden zu, denn Böden speichern weltweit mehr C als Vegetation und boden zusammen (Brady and Weil, 2002). Im Sinne einer nachhaltigen Waldbewirtschaftung werden in Sachsen derzeit großflächig die bestehenden Nadelforsten in naturnahe, strukturierte Laub- und Laubmischwälder umgewandelt. Ziel dieser Arbeit war es daher, baumarten- und bewirtschaftungsspezifische Effekte auf den Humus und die C-Speicherung im

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5

Kraus, Tamara Esther Caroline. "Tannins and nutrient dynamics in forest soils : plant-litter-soil interactions /." For electronic version search Digital dissertations database. Restricted to UC campuses. Access is free to UC campus dissertations, 2002. http://uclibs.org/PID/11984.

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6

Eriksson, Johan. "Retention and mobilisation of trinitrotoluene, aniline, nitrobenzene and toluene by soil organic matter /." Umeå : Dept. of Forest Ecology, Swedish Univ. of Agricultural Sciences, 2003. http://epsilon.slu.se/s266.pdf.

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7

Sjöberg, Gudrun. "Lignin degradation : long-term effects of nitrogen addition on decomposition of forest soil organic matter /." Uppsala : Dept. of Soil Sciences, Swedish Univ. of Agricultural Sciences, 2003. http://epsilon.slu.se/a419.pdf.

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8

Åkerblom, Staffan. "Anthropogenic heavy metals in organic forest soils : distribution, microbial risk assessment and Hg mobility /." Uppsala : Department of Environmental Assessment, Swedish University of Agricultural Sciences, 2006. http://epsilon.slu.se/200667.pdf.

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9

Groeschl, David A. "Forest soil and vegetation characteristics in two forest types following wildfire in the Shenandoah National Park, Virginia." Thesis, This resource online, 1991. http://scholar.lib.vt.edu/theses/available/etd-11242009-020129/.

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10

Duncan, Carla S. "Carbon and nitrogen dynamics on a forest site receiving continual papermill sludge applications : a soil column study /." Thesis, This resource online, 1992. http://scholar.lib.vt.edu/theses/available/etd-10102009-020250/.

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11

Franklin, Oskar. "Plant and forest dynamics in response to nitrogen availability /." Uppsala : Swedish University of Agricultural Sciences, 2003. http://diss-epsilon.slu.se/archive/00000345/.

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Thesis (doctoral)--Swedish University of Agricultural Sciences, 2003.<br>Appendix consists of reprints of three papers and a manuscript, three of which are co-authored with others. Includes bibliographical references. Also partially issued electronically via World Wide Web in PDF format; online version lacks appendix.

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12

Yusran, Fadly Hairannoor. "Soil organic matter decomposition : effects of organic matter addition on phosphorus dynamics in lateritic soils." University of Western Australia. School of Earth and Geographical Sciences, 2005. http://theses.library.uwa.edu.au/adt-WU2005.0120.

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[Truncated abstract] Relationships between the persistence of organic matter added to soil, the dynamics of soil organic carbon (C) and phosphorus (P) were examined in four experiments on lateritic soils of Western Australia. The main objective was to quantify the release of P following organic matter application in soils which have high P adsorbing capacity. Another objective was to confirm that due to its recalcitrant materials, the effect of peat lasted longer in soil than other sources of organic matter in terms of increasing plant-available P fractions. Three experiments were conducted u

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13

Sjögersten, Sofie. "Soil organic matter dynamics and methane fluxes at the forest-tundra ecotone in Fennoscandia /." Uppsala : Acta Universitatis Upsaliensis : Univ.-bibl. [distributör], 2003. http://publications.uu.se/theses/91-554-5533-6/.

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14

Willson, David A. "Soil nitrogen dynamics and herbaceous layer diversity in nitrogen saturated watersheds of Fernow Experimental Forest, West Virginia." Huntington, WV : [Marshall University Libraries], 2004. http://www.marshall.edu/etd/descript.asp?ref=457.

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Thesis (M.S.)--Marshall University, 2004.<br>Title from document title page. Includes abstract. Document formatted into pages; contains vii, 120 p. including illustrations. Includes bibliographical references (p. 110-114).

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15

Heckman, Katherine Ann. "Pedogenesis & Carbon Dynamics Across a Lithosequence Under Ponderosa Pine." Diss., The University of Arizona, 2010. http://hdl.handle.net/10150/196016.

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Three studies were completed to investigate the influence of mineral assemblage on soil organic carbon (SOC) cycling and pedogenesis in forest soils. Two studies utilized a lithosequence of four parent materials (rhyolite, granite, basalt, limestone/volcanic cinders) under Pinus ponderosa, to explicitly quantify the contribution of parent material mineral assemblage to the character of the resulting soil. The first study explored variation in pedogenesis and elemental mass loss as a product of parent material through a combination of quantitative X-ray diffraction and elemental mass balance. R

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16

Neal, Andrew Wilson. "Soil Carbon and Nitrogen Dynamics Across the Hillslope-Riparian Interface in Adjacent Watersheds with Contrasting Cellulosic Biofuel Systems." Thesis, Virginia Tech, 2014. http://hdl.handle.net/10919/48125.

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Climate change resulting from emissions of fossil fuel combustion has sparked considerable interest in renewable energy and fuel production research, particularly energy derived from cellulosic ethanol, which is derived from biomass such as wood and grass. Cellulosic ethanol demonstrates a more promising future as a global energy source than corn-derived ethanol because it does not displace food crops, irrigation is not required, and chemical application rates are much lower than for annual crops, such as corn. Growing cellulosic biomass for energy can help reduce greenhouse gas emissions via

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17

Bois, Claudette Hélène. "The effect of timber harvest and wildfire on soil physical and nutritional dynamics in two boreal forest ecosite types in eastern Manitoba /." Thesis, McGill University, 2004. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=80229.

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Forest ecosystems undergo both natural and human induced disturbances. Depending on disturbance type, soil physical and chemical parameters show different response patterns during the recovery phase. An added level of complication is the ecological site types occurring throughout a forested area. The identification of indicators of soil fertility and the successful emulation of a natural disturbance regime were the scope of this research.<br>The research presented herein took place in the Manitoba Model Forest (MBMF), located in eastern Manitoba, where the natural disturbance regime is

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18

Lemma, Bekele. "Impact of exotic tree plantations on carbon and nutrient dynamics in abandoned farmland soils of southwestern Ethiopia /." Uppsala : Department of Forest Soils, Swedish University of Agricultural Sciences, 2006. http://epsilon.slu.se/2006108.pdf.

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19

Crow, Susan E. "Characteristics of soil organic matter in two forest soils." Thesis, 2006. http://hdl.handle.net/1957/28854.

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Soil organic matter (SOM) is the terrestrial biosphere's largest pool of organic carbon (C) and is an integral part of C cycling globally. Soil organic matter composition typically can be traced directly back to the type of detrital inputs; however, the stabilization of SOM results as a combination of chemical recalcitrance, protection from microbial decomposition within soil structure, and organo-mineral interactions. A long-term manipulative field experiment, the Detrital Input and Removal Treatment (DIRT) Project, was established to examine effects of altering detrital inputs (above- vs. be

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20

Swanston, Christopher W. "Influences of nitrogen on carbon dynamics in forest soil and density fractions /." 2000. http://hdl.handle.net/1957/11092.

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21

"Vegetation dynamics and soil characteristics of acacia plantations in Hong Kong." 2001. http://library.cuhk.edu.hk/record=b5890818.

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by Au Pui Sze.<br>Thesis submitted in: December 2000.<br>Thesis (M.Phil.)--Chinese University of Hong Kong, 2001.<br>Includes bibliographical references (leaves 135-150).<br>Abstracts in English and Chinese.<br>Abstract --- p.i<br>Abstract (in Chinese) --- p.iii<br>Acknowledgement --- p.iv<br>Table of contents --- p.vi<br>List of tables --- p.x<br>List of figures --- p.xi<br>List of appendices --- p.xii<br>Chapter Chapter one --- Introduction<br>Chapter 1.1 --- The role of plantations in ecosystem rehabilitation --- p.1<br>Chapter 1.2 --- Reforestation history in Hong Kong --- p.2<br>

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22

Wig, Jennifer D. "Effects of 20 years of litter and root manipulations on soil organic matter dynamics." Thesis, 2012. http://hdl.handle.net/1957/30031.

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Globally, the forestry sector is the second largest contributor of greenhouse gases, and sustainable forest management is a major target of international environmental policy. However, there is the assumption underlying many policy recommendations that an increase in above-ground carbon stocks correspond to long term increases in ecosystem carbon stocks, the majority of which is stored in soils. We analyzed soil carbon and nitrogen dynamics in forest soils that had undergone twenty years of organic inputs manipulations as part of the Detritus Input and Removal Treatment (DIRT) network. There w

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23

McClellan, Michael H. "Soil carbon and nutrient dynamics of windthrow chronosequences in spruce-hemlock forests of southern Alaska /." 1990. http://hdl.handle.net/1957/13377.

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