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在整个美国,使用凸凸的船体,为草本物种开发空间显式的临界负载
Christopher M Clark1, Gray D Martin2, Jennifer N Phelan2
1U.S. Environmental Protection Agency, Office of Research and Development, Center for Public Health and Environmental Assessment, Washington, DC, USA.
空间显式关键负载,使用凸起的船体,确保土地管理人员准确的数据. 这种方法提高了环境数据的可靠性,在各种生态系统中进行决策.
科学领域:
- 生态生态学 生态生态学
- 环境科学 环境科学
- 保护生物学 保护生物学
背景情况:
- 大气中和硫沉积是对陆地生物多样性的重大威胁,影响物种分布和生态系统服务.
- 现有的关键负载数据往往缺乏特定管理领域的空间相关性,从而造成科学和法律挑战.
- 将科学数据转化为土地管理人员可行的决策受到数据代表性问题的阻碍.
研究的目的:
- 开发使用凸体船体的空间显式关键负载,以解决科学到决策翻译的知识差距.
- 评估现有的临界负载数据在更广泛的景观中的代表性.
- 评估凸船体对支持土地管理者和决策者的实用性.
主要方法:
- 使用凸的船体来定义森林,草原和单个草本物种的空间显式关键负载.
- 对比了约15,000个采样地点的环境条件,从具有关键负载的地点到缺乏直接采样的更广泛的景观.
- 分析了198个物种的历史范围覆盖范围,在凸船体边界和标准偏差范围内.
主要成果:
- 采样的地块通常代表着整个连续的美国的森林和草原社区,除了东南部和太平洋西北地区的例外.
- 81%的评估物种至少有50%的历史分布在凸船体内.
- 99%的物种至少有50%的历史分布在凸船体的一个标准偏差范围内.
结论:
- 来自凸船体的空间显式关键负载可以在大多数物种的范围中可靠地用于明智的决策.
- 凸船体方法提高了现有数据集的实用性,并可以指导未来的生态采样工作.
- 这种方法加强了土地管理者保护生态系统免受大气沉积等压力因素的能力.
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