与哥伦比亚南部咖啡生产系统相关的木本树种

H. Ordóñez-Jurado, M. Cerón, Dayana Lizeth Martinez O
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引用次数: 0

摘要

在La Unión- Nariño镇的咖啡区,原生或引进的树木与农场的生产系统有关,主要是因为它们为咖啡作物提供荫凉,而物种生物多样性和造林管理等特定方面尚不清楚。为了了解常用的木本树种及其文化重要性,对100名咖啡种植者进行了半结构化调查,这些种植者是随机选择的,随意分布在三个海拔范围内:(m.a.s.l.): I(1800)。测定每个选择范围的物种丰富度;区间间多样性采用Jaccard指数(JI)和文化重要性指数(CI)。后者由使用强度(IU)、被引频次(FC)和使用价值(UV)相加确定。在3个海拔范围内共发现树种59种。分布于32科46属。以蚕豆科最具代表性,其次是芸香科、桃金娘科和大戟科;引进种数占45.8%。在海拔高度范围内,相似度较低;一级和二级共有24种,占其区系组成的33.8%。区间I和区间III的相似度更低,为24.2%;只有17种是共有的。密植草(I. densiflora)的CI最高,为32.92%,其次是中华香薷(C. sinensis),为31.98%;其次是大茶树和美洲茶树,分别占30.49%和26.27%。这些品种对咖啡种植者非常重要,因为它们对家庭经济产生积极影响,并对生产系统的环境福祉作出贡献。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Woody species associated with coffee production systems in southern Colombia
In the coffee zone of the town La Unión- Nariño, native or introduced trees are associated with the productive systems of the farms, mainly because they provide shade for coffee crops, where particular aspects such as species biodiversity and silvicultural management are unknown. With the aim of knowing the woody species of common use and the cultural importance, a semi structured survey was applied to 100 coffee growers who were selected at random and aleatorily distributed in three altitudinal ranges: (m.a.s.l.): I (<1500), II (1500-1800) and III (> 1800). Species richness was determined for each chosen range; for diversity between ranges, the Jaccard Index (JI) and the Cultural Importance Index (CI) were used. The latter was determined by adding up the intensity of use (IU), frequency of citation (FC), and use value (UV). In the three altitude ranges evaluated, 59 tree species were found. These were distributed in 32 botanical families and 46 genera. The fabaceae family was the most representative, followed by rutaceae, myrtaceae and bignoniaceae; 45.8% of the species were introduced. Among the altitudinal ranges, a low degree similarity was found; ranks I and II shared 24 species, which is equivalent to 33.8% of their floristic composition. As for ranges I and III, they had an even lower degree of similarity: 24.2%; only 17 species were shared. The species I. densiflora had the highest percentage of CI, with 32.92%, followed by C. sinensis with 31.98%; then the species T. gigantea and P. americana with 30.49% and 26.27% respectively. These species were of great importance to coffee growers due to the positive impact they have on the family economy and their contribution to the environmental well-being of production systems.
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