捕捞区的特点控制北极沼泽的营养制度和植被模式,超过5000年的景观发展
Betty Ehnvall1, Anneli M Ågren1, Mats B Nilsson1
1Department of Forest Ecology and Management, Swedish University of Agricultural Sciences, Skogsmarksgränd 17, 90183 Umeå, Sweden.
The Science of the total environment
|June 28, 2023
概括
景观特征显著影响沼泽植被模式和营养系统. 用规范差异植被指数 (NDVI) 衡量的米尔植被与营养投入和生态水文因素密切相关,老化也起着关键作用.
科学领域:
- 生态生态学 生态生态学
- 环境科学 环境科学
- 地质形态学 地质形态学
背景情况:
- 沼泽植物对生态系统服务至关重要,如生物多样性和碳捕获.
- 在大尺度上,对沼泽植被模式的景观控制是不太了解的.
- 了解这些控制对于管理沼泽生态系统服务至关重要.
研究的目的:
- 调查对沼泽营养制度和植被模式的流域控制.
- 区分长期的沼泽继承和当今植被对生态水文环境的反应.
- 用自然的时间序列来确定影响沼泽植被的关键因素.
主要方法:
- 沿着瑞典上升的海岸线利用了自然的沼泽时间序列.
- 使用遥感 (NDVI) 来评估沼泽植被.
- 结合了泥炭的物理化学数据和流域特性.
主要成果:
- 米尔NDVI强烈依赖来自水域和矿物土壤的营养投入 (,).
- 的坡度,干燥的条件和较大的相对流域与较高的NDVI相关.
- 较老的镜像显示较低的NDVI,表明长期的继承模式.
结论:
- 草植被在数量上与景观属性和营养体系有关.
- 采集区的影响得到证实,但泥和采集区的老化可能会取代这种影响,特别是在年轻的泥中.
- NDVI是开放沼泽植被的可靠指标,但在森林沼泽中,树冠占主导地位.
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