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首页> 外文期刊>Journal of Tropical Forest Science >Structure and potential regeneration of degraded secondary stands in Munessa-Shashemene forest, Ethiopia.
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Structure and potential regeneration of degraded secondary stands in Munessa-Shashemene forest, Ethiopia.

机译：埃塞俄比亚Munessa-Shashemene森林退化次生林的结构和潜在更新。

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摘要

The dry afromontane forests in the Ethiopian highlands are being threatened by deforestation and forest degradation. A study was conducted in a dry afromontane forest of Munessa-Shashemene to evaluate the density and diversity of the forest. Due to harvesting of valuable trees many gaps are now present. The species composition and structure of the remaining secondary forest as well as the regeneration were analysed. A total of 25 forest stands in the neighbourhood of 25 gaps in an enrichment planting experiment were assessed. A plot of dimension 30x30 m was established in each stand. Diameter at breast height (dbh) and height of all trees with dbh>2 cm were measured. Regeneration of woody plants was assessed in four subplots in each stand. Thirty-six woody species were recorded in the mature stand, representing 35 genera and 30 families. Density of woody species was 734 stems ha-1 and the total basal area was 9.5 m2 ha-1. Regeneration of trees and shrubs was 1,000 saplings and 31,600 seedlings ha-1. Enrichment of valuable tree species with supplement plantings may be required to keep the valuable species as part of these forests.
机译：埃塞俄比亚高地的干燥afromontane森林正受到森林砍伐和森林退化的威胁。在Munessa-Shashemene的干旱afromontane森林中进行了一项研究，以评估森林的密度和多样性。由于收获了珍贵的树木，现在存在许多空白。分析了剩余次生林的物种组成和结构以及再生情况。在富集种植试验中，评估了25个缺口附近的总共25个林分。在每个机架中建立了尺寸为30x30 m的图。测量胸高（dbh）的直径和dbh> 2 cm的所有树木的高度。在每个林分的四个子图中评估了木本植物的再生。成熟林分中记录了36种木本物种，代表35个属和30个科。木本植物的密度为734茎ha -1 ，总基础面积为9.5 m 2 ha -1 。树木和灌木的再生为ha -1 的树苗为1,000株，树苗为31,600株。可能需要通过补充种植来丰富珍贵树种，以将珍贵树种保留为这些森林的一部分。

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