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coppicing 对小气候和地下植被多样性的影响 在一个古老的地中海树林中
Ilaria Santi1, Elisa Carrari1, Pieter De Frenne2
1Department of Agriculture, Food, Environment and Forestry, University of Florence, P. le Cascine 18, 50144 Florence, Italy.
The Science of the total environment
|February 3, 2024
概括
砍伐古老的树森林可以减少温度缓冲,增加最高温度和降低最低温度. 这种林业实践有利于一般物种,对森林专家和生物多样性产生负面影响.
科学领域:
- 生态生态学 生态生态学
- 林业林业 林业 林业 林业
- 气候变化科学 气候变化科学
背景情况:
- 砍伐是一种传统的林业实践,用于从宽叶森林中生产可再生能源.
- 它对微气候和地下植被,特别是地中海树林的影响仍然不太清楚.
- 鉴于气候变化和全球生物多样性丧失,了解这些影响至关重要.
研究的目的:
- 量化意大利树林中古树与高森林相比的微气候和地下植被变化.
- 评估coppicing对温度缓冲能力和树冠以下植物群落的影响.
- 评估对物种组成,分类学,遗传学和功能多样性的影响.
主要方法:
- 在2.5年内长期监测空气和土壤温度.
- 分析嵌巢植被地块,以评估物种组成和多样性指标.
- 与标准相邻的树和高森林立体之间的比较.
主要成果:
- 采伐大大降低了森林温度缓冲能力,在采伐地点,每日最高气温 (+1.45°C) 和最低气温 (-0.62°C) 较高.
- 由于一般主义的种类,地下层物种丰富度增加,但森林专家的比例下降.
- 砍伐的森林显示出一种更适应温暖的物种群体,减少了家族遗传的均性,以及功能特征的变化 (叶子干物质含量).
结论:
- 摘花对微气候产生负面影响,可能加剧气候变化影响.
- 这种做法导致了专业植物的丧失,并降低了树林的植物遗传均性.
- 息地过和适应过程塑造了地下社区,以应对coppicing.
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