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流域土地使用对温带红树林的影响
Timothy Thomson1, Joanne I Ellis1, Marco Fusi2
1University of Waikato, School of Science, Tauranga, New Zealand.
The Science of the total environment
|June 1, 2024
概括
人类的土地利用影响着红树林,增加了营养素,改变了生态系统的健康. 尽管有负面影响,但一些红树林的生长和招募显示出与人类土地使用的积极相关性.
科学领域:
- 沿海生态 沿海生态
- 环境科学 环境科学
- 林业林业 林业 林业 林业
背景情况:
- 人类对土地的使用加剧,威胁全球沿海生态系统.
- 土地使用增加的沉积,污染物和营养物质会损害海洋生物.
- 这些因素对红树林健康的具体影响尚不清楚.
研究的目的:
- 调查人类对流域土地使用如何影响红树林建筑和沉积物属性.
- 通过人类土地使用梯度在景观尺度上分析这些影响.
- 了解土地利用与红树林生态系统运作之间的复杂相互作用.
主要方法:
- 沿着人类土地使用梯度选择了30个地点,最大限度地减少了度气候变化.
- 使用空间分析和土地使用数据库量化土地使用 (LCDB5).
- 从每个地点收集了26个森林建筑和沉积物变量.
主要成果:
- 人类对土地的使用显著影响了26个环境变量中的10个.
- 环氧化 (氧化还原潜力,pH,沉积物营养物质的变化) 与人类土地使用增加有很强的相关性.
- 人类土地使用的增加与树木密度,传播物和苗木密度有积极的相关性,表明增长和招聘的增强.
结论:
- 人类的土地利用推动了肥沃化,改变了红树林的结构和动态.
- 从流域增加的营养投入可以增强红树林的生长和招聘.
- 这些发现强调了需要全面管理红树林生态系统,考虑到陆海相互作用和生态系统服务.
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