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Evaluating the Use of Soil Amendment...

Iwamoto, Casey,

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Evaluating the Use of Soil Amendments for Shortleaf Pine (Pinus echinata) Restoration on Post-Mined Landscapes /

Record Type:	Electronic resources : Monograph/item
Title/Author:	Evaluating the Use of Soil Amendments for Shortleaf Pine (Pinus echinata) Restoration on Post-Mined Landscapes // Casey Iwamoto.
Author:	Iwamoto, Casey,
Description:	1 electronic resource (96 pages)
Notes:	Source: Dissertations Abstracts International, Volume: 86-02, Section: B.
Contained By:	Dissertations Abstracts International86-02B.
Subject:	Forestry. -
Online resource:	https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=31485392
ISBN:	9798383703120

Evaluating the Use of Soil Amendments for Shortleaf Pine (Pinus echinata) Restoration on Post-Mined Landscapes /
Iwamoto, Casey,

Evaluating the Use of Soil Amendments for Shortleaf Pine (Pinus echinata) Restoration on Post-Mined Landscapes /Casey Iwamoto. - 1 electronic resource (96 pages)

Source: Dissertations Abstracts International, Volume: 86-02, Section: B.

Coal strip mining leaves widespread degraded soil throughout the southeastern US. These soils tend to have low pH, high bulk density, impacted hydrologic processes, and an accumulation of heavy metals that limit revegetation and reforestation efforts. Shortleaf pine (Pinus echinata) can tolerate these poor conditions on post-mined sites and has the largest native pine range in the southeastern US, making it an ideal species for restoration efforts. Additionally, the use of soil amendments to improve soil physical and chemical parameters is expected to lead to improved plant establishment and growth. To address the challenges associated with degraded post-mined landscapes, two studies were conducted using a biochar (BC) and microbial amendment (MA).Few empirical studies have been conducted on the success of soil amendments for soil physical properties, chemical properties, and tree growth. To fill this knowledge gap, a three-year field trial was established on a reclaimed mining site in Alabama. Shortleaf pine seedlings were planted in a complete randomized block design with two soil amendment treatments: BC and MA. The second study then evaluated how climate change impacts restoration efforts. Specifically, this study observed how precipitation uncertainty affects the effectiveness of existing restoration techniques. This comprehensive 6-month greenhouse experiment in Mississippi examined shortleaf pine restoration under dry and wet moisture regimes. Soil amendments were applied to one year old seedlings replicated across moisture treatments including the same mixtures of amendments as the field experiment in addition to a no tree treatment, a pot with only post-mined soil.Findings from both studies indicate that BC did not improve measured soil properties or tree growth as expected, while the MA induced short-term impacts on soil physical and chemical properties that impacted tree growth. The greenhouse results also indicated that changes in precipitation do not impact the effects of any soil amendment. Additionally, MA may have the potential to change the allocation of biomass for shortleaf pine, which has implications for survival and restoration. In the short-term, the application of commercially recommended levels of treatments were ineffective at supporting tree growth through improvements to measured soil characteristics.

English

ISBN: 9798383703120Subjects--Topical Terms:

895157
Forestry.
Subjects--Index Terms:

Biochar

Evaluating the Use of Soil Amendments for Shortleaf Pine (Pinus echinata) Restoration on Post-Mined Landscapes /
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245 1 0 $a Evaluating the Use of Soil Amendments for Shortleaf Pine (Pinus echinata) Restoration on Post-Mined Landscapes / $c Casey Iwamoto.
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300 $a 1 electronic resource (96 pages)
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500 $a Source: Dissertations Abstracts International, Volume: 86-02, Section: B.
500 $a Advisors: Siegert, Courtney M. Committee members: Granger, Joshua J.; Poudel, Krishna P.; Polinko, Adam D.; Freedman, Zachary.
502 $b Ph.D. $c Mississippi State University $d 2024.
520 $a Coal strip mining leaves widespread degraded soil throughout the southeastern US. These soils tend to have low pH, high bulk density, impacted hydrologic processes, and an accumulation of heavy metals that limit revegetation and reforestation efforts. Shortleaf pine (Pinus echinata) can tolerate these poor conditions on post-mined sites and has the largest native pine range in the southeastern US, making it an ideal species for restoration efforts. Additionally, the use of soil amendments to improve soil physical and chemical parameters is expected to lead to improved plant establishment and growth. To address the challenges associated with degraded post-mined landscapes, two studies were conducted using a biochar (BC) and microbial amendment (MA).Few empirical studies have been conducted on the success of soil amendments for soil physical properties, chemical properties, and tree growth. To fill this knowledge gap, a three-year field trial was established on a reclaimed mining site in Alabama. Shortleaf pine seedlings were planted in a complete randomized block design with two soil amendment treatments: BC and MA. The second study then evaluated how climate change impacts restoration efforts. Specifically, this study observed how precipitation uncertainty affects the effectiveness of existing restoration techniques. This comprehensive 6-month greenhouse experiment in Mississippi examined shortleaf pine restoration under dry and wet moisture regimes. Soil amendments were applied to one year old seedlings replicated across moisture treatments including the same mixtures of amendments as the field experiment in addition to a no tree treatment, a pot with only post-mined soil.Findings from both studies indicate that BC did not improve measured soil properties or tree growth as expected, while the MA induced short-term impacts on soil physical and chemical properties that impacted tree growth. The greenhouse results also indicated that changes in precipitation do not impact the effects of any soil amendment. Additionally, MA may have the potential to change the allocation of biomass for shortleaf pine, which has implications for survival and restoration. In the short-term, the application of commercially recommended levels of treatments were ineffective at supporting tree growth through improvements to measured soil characteristics.
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590 $a School code: 0132
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650 4 $a Soil sciences. $3 2122699
650 4 $a Environmental science. $3 677245
650 4 $a Climate change. $2 bicssc $3 2079509
653 $a Biochar
653 $a Soil amendment
653 $a Coal mining
653 $a Ectomycorrhizal fungi inoculation
690 $a 0478
690 $a 0404
690 $a 0768
690 $a 0481
710 2 $a Mississippi State University. $b Department of Forestry. $e degree granting institution. $3 3821610
720 1 $a Siegert, Courtney M. $e degree supervisor.
773 0 $t Dissertations Abstracts International $g 86-02B.
790 $a 0132
791 $a Ph.D.
792 $a 2024
856 4 0 $u https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=31485392