Scholarlink

<p>Traditional shifting cultivation is a common land management practice widely used in the northwest lowlands of Ethiopia in general and in Quara district in particular. It is considered as an important factor in determining the woody plant diversity, composition and structure in the area. Particularly, no studies have been conducted to examine the resilience capacity of woody plant species after shifting cultivation along the fallow period gradients and compare with the old-age natural forest adjacent to the fallow lands. This study was conducted at Bambaho, Gelegu and Chercher sites in Quara district to examine the diversity, structure and regeneration status of woody plant in secondary forest under traditional shifting cultivation system. A total of 57 quadrats (20 × 20 m<sup>2</sup>) were laid out randomly along different fallow period gradients of 2–4&#xa0;years, 5–7&#xa0;years, 8–10&#xa0;years, 11–13&#xa0;years 14–16&#xa0;years and 17–20&#xa0;years. Major quadrats were made in to four, each 100&#xa0;m<sup>2</sup> (10 × 10&#xa0;m) subplots for the regeneration assessment (sapling and seedling counting). From each fallow period, 12% sampling intensity was taken per hectare. Vegetation parameters were measured and compared along the fallow period gradients and the adjacent old-growth natural forest using multivariate analysis. The highest similarity coefficient was observed between four and six fallow periods whereas the least similarity coefficient was observed between 2 and 4&#xa0;years fallow period and old-age natural forest. No statistically significant difference was observed in Shannon’s diversity index (<i>p</i> = 0.08), wood plant regeneration status (<i>p</i> = 0.94) and species evenness (<i>p</i> = 0.89) among the fallow period gradients and old-age natural forest, while species richness (<i>p</i> = 0.004), tree density (<i>p</i> = 0.001) and basal area (<i>p</i> = 0.0000) showed significant difference among the fallow period gradients and old-age natural forest. Overall this study showed that secondary woody plant succession after traditional shifting cultivation has resilience potentials in the district.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Woody plant secondary succession along the gradients of fallow periods in traditional shifting cultivation system of Quara District, Northwestern Ethiopia

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2025年7月30日

查看全文
  • Dereje Gasheye,
  • Demelash Alem,
  • Asmamaw Alemu

摘要

Traditional shifting cultivation is a common land management practice widely used in the northwest lowlands of Ethiopia in general and in Quara district in particular. It is considered as an important factor in determining the woody plant diversity, composition and structure in the area. Particularly, no studies have been conducted to examine the resilience capacity of woody plant species after shifting cultivation along the fallow period gradients and compare with the old-age natural forest adjacent to the fallow lands. This study was conducted at Bambaho, Gelegu and Chercher sites in Quara district to examine the diversity, structure and regeneration status of woody plant in secondary forest under traditional shifting cultivation system. A total of 57 quadrats (20 × 20 m2) were laid out randomly along different fallow period gradients of 2–4 years, 5–7 years, 8–10 years, 11–13 years 14–16 years and 17–20 years. Major quadrats were made in to four, each 100 m2 (10 × 10 m) subplots for the regeneration assessment (sapling and seedling counting). From each fallow period, 12% sampling intensity was taken per hectare. Vegetation parameters were measured and compared along the fallow period gradients and the adjacent old-growth natural forest using multivariate analysis. The highest similarity coefficient was observed between four and six fallow periods whereas the least similarity coefficient was observed between 2 and 4 years fallow period and old-age natural forest. No statistically significant difference was observed in Shannon’s diversity index (p = 0.08), wood plant regeneration status (p = 0.94) and species evenness (p = 0.89) among the fallow period gradients and old-age natural forest, while species richness (p = 0.004), tree density (p = 0.001) and basal area (p = 0.0000) showed significant difference among the fallow period gradients and old-age natural forest. Overall this study showed that secondary woody plant succession after traditional shifting cultivation has resilience potentials in the district.