Vulnerability of ecosystems with Guadua angustifolia in Ecuador in light of climate changes1

ABSTRACT Guadua angustifolia bamboo is historically used by an important percentage of the rural and peri-urban population of Ecuador, especially in the construction of bridges, when events like El Niño and its consequential flooding occur. This study aimed to determine, in light of some climate change scenarios, the vulnerability rate of ecosystems where the G. angustifolia bamboo species occurs, in the coastal region of continental Ecuador. The analysis methodology, with focus on the sampled units, was based on vulnerability assessment tools for climate adaptation recommended by the Intergovernmental Panel on Climate Change.Temperature presented the highest correlation coefficient with the vulnerability rate of the ecosystems, followed by the increase in the sea level, winds and landslides. It was concluded that as the exposure and sensitivity variables increase, the adaptive capacity of ecosystems with occurence of this species decreases, and isolated plants and monoculture plantations are the most vulnerable to climate changes.

摘要：狭叶瓜多竹（Guadua angustifolia）自古以来便为厄瓜多尔大量农村与城郊人口所使用，尤其在厄尔尼诺现象及其引发的洪涝灾害发生时，多用于桥梁建造。本研究旨在结合多种气候变化情景，评估厄瓜多尔大陆沿海区域内分布该竹种的生态系统的脆弱性等级。本研究的分析方法以采样单元为核心，采用了政府间气候变化专门委员会（Intergovernmental Panel on Climate Change）推荐的气候适应脆弱性评估工具。研究结果显示，温度与该类生态系统的脆弱性等级的相关系数最高，其次为海平面上升、风力及滑坡灾害。最终结论表明：随着暴露度与敏感性变量的提升，分布该竹种的生态系统的适应能力会随之下降；其中，孤立植株与单一种植园对气候变化的脆弱性最高。