空间和时间尺度依赖的反控制了干旱地区生物的动态
Jingyao Sun1,2, Kailiang Yu2,3, Max Rietkerk4
1Shapotou Desert Research and Experiment Station, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China.
概括
生物土壤地通过尺度依赖的反来自我组织成不同的空间模式. 这个过程塑造了干地生态系统,并影响了它们的弹性.
科学领域:
- 生态生态学 生态生态学
- 生态系统科学 生态系统科学
- 空间生态学空间生态学
背景情况:
- 生物群作为生态系统工程师,通过规模依赖的反来创造景观异质性.
- 以前的研究集中在植物群落;生物的自我组织仍然不太了解.
研究的目的:
- 研究生物 (和水) 中的自我组织的空间模式.
- 确定补丁大小分布 (PSD) 和连续阶段如何影响这些模式.
- 探索尺度依赖的反在生物地模式形成中的作用.
主要方法:
- 通过相继的阶段对生物进行了现场观测.
- 采用了一个概率性的细胞自动机模型来模拟空间模式.
- 分析了补丁尺寸分布 (PSD) 和生物性能指标.
主要成果:
- 短期的正面反最初会产生长尾的PSD.
- 长期负面反建立了具有规则PSD的特征补丁尺度.
- 后期阶段的继承表明,类恢复到重尾PSD,这表明了关键的碎片化.
结论:
- 生物地社区通过规模依赖的反驱动,自我组织成不同的空间模式.
- 这些模式受到相继阶段和补丁特征的影响.
- 生物地的自我组织会影响干地生态系统的功能和弹性.
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