Physical and Chemical Properties of Highland Bamboo (Yushania alpina) Culms Grown in Ethiopia

IF 0.7 4区农林科学 Q4 MATERIALS SCIENCE, PAPER & WOOD

Drvna Industrija Pub Date : 2023-09-29 DOI:10.5552/drvind.2023.0059

Mahadi Mussa, Getachew Desalegn, Gemechu Kaba, Anteneh Tesfaye

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Abstract

Bamboo is the fastest growing plant currently known on earth, a property that enables it to be the best alternative as a future source of wood fi ber. This study investigated the effect of site and culm height on the physical and chemical properties of Yushania alpina culms grown in Ethiopia. Matured Yushania alpina 3 to 5-year-old samples were harvested from Hagere-Selam and Rebu-Gebeya sites. The culms were subdivided into three equal lengths (bottom, middle, and top), and the variations in physical and chemical properties between the two sites and the culm heights of Yushania alpina were investigated. The results showed that the average values of MC, basic density, tangential and longitudinal shrinkage of Yushania alpina culms for Hagere-Selam and Rebu-Gebeya sites were (91.78 and 80.32 %), (0.65 and 0.63 g/cm3), (6.63 and 5.84 %) and (0.63 and 0.56 %), respectively. The average values of cellulose, lignin, extractive and ash contents in the culms for Hagere-Selam and Rebu-Gebeya sites were (52.84 and 50.71 %), (26.55, and 26.04 %), (8.41 and 8.02 %) and (1.95 and 2.17 %), respectively. The results revealed that the site affected the MC, basic density, cellulose, lignin, extractive, and ash contents of Yushania alpina culms but not the tangential and longitudinal shrinkage. The culm height of Yushania alpina affected MC, basic density, tangential shrinkage, longitudinal shrinkage, cellulose, lignin, extractive, and ash contents. In the case of both sites, the highest percentages of MC, tangential and longitudinal shrinkage, and ash content were observed at the base and lowest at the top of the culms. On the contrary, both sites observed thehighest magnitude of basic density, cellulose and extractive at the top and lowest at the base of the culms. The variations in physical and chemical properties at different sites and culm heights infl uence the utilization of Yushania alpina culms for industries and end products.

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埃塞俄比亚高原竹(Yushania alpina)秆的理化性质

竹子是目前已知地球上生长最快的植物，这一特性使它成为未来木质纤维的最佳替代品。研究了种植地点和竿高对衣索比亚玉山尼亚(Yushania alpina)竿理化性状的影响。在Hagere-Selam和rebue - gebeya遗址采集了3至5年的成熟玉山尼亚样品。将玉山草的茎秆分成下、中、上三等长，研究了两个地点茎秆的理化性质和茎秆高度的变化。结果表明:Hagere-Selam和rebur - gebeya两种生境中，榆树茎秆的MC平均值分别为91.78和80.32%、0.65和0.63 g/cm3、6.63和5.84%和0.63和0.56%;Hagere-Selam和reber - gebeya两个站点茎秆中纤维素、木质素、提取物和灰分含量的平均值分别为52.84%和50.71%、26.55%和26.04%、8.41%和8.02%和1.95%和2.17%。结果表明，场地对玉山茎秆的MC、基本密度、纤维素、木质素、浸出物和灰分含量均有影响，但对切向收缩和纵向收缩没有影响。玉山草的茎秆高度影响其MC、基本密度、切向收缩率、纵向收缩率、纤维素、木质素、浸出物和灰分含量。在这两个地点，茎基部的含水率、切向收缩率和纵向收缩率以及灰分含量最高，顶部最低。相反，两个地点茎秆的基本密度、纤维素和提取物的大小在顶部最高，在基部最低。不同立地和竿高的玉山高山茎秆理化性质的变化影响着其工业和最终产品的利用。

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来源期刊

Drvna Industrija MATERIALS SCIENCE, PAPER & WOOD-

CiteScore

1.80

自引率

9.10%

发文量

审稿时长

>12 weeks

期刊介绍： "Drvna industrija" ("Wood Industry") journal publishes original scientific and review papers, short notes, professional papers, conference papers, reports, professional information, bibliographical and survey articles and general notes relating to the forestry exploitation, biology, chemistry, physics and technology of wood, pulp and paper and wood components, including production, management and marketing aspects in the woodworking industry.