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较早和更均的春季绿化与温带森林中较低的昆虫丰富度和生物量有关
Lars Uphus1, Johannes Uhler2, Cynthia Tobisch3,4
1Ecoclimatology, TUM School of Life Sciences, Technical University of Munich, Freising, Germany. lars.uphus@tum.de.
Communications biology
|November 7, 2023
概括
温暖的春天导致更早,更均的植物变绿,对森林昆虫生物质和丰富性产生负面影响. 保护工作的重点应该是保持森林绿化模式的多样性.
科学领域:
- 生态生态学 生态生态学
- 遥感 遥感 遥感 遥感
- 昆虫学 昆虫学是一门学科.
背景情况:
- 欧洲的昆虫减少与城市化和农业有关,气候变暖的作用尚不清楚.
- 温暖的温度提前春季叶子的出现,可能会直接或间接地影响昆虫.
- 了解绿化时间和变异性对于评估气候变化对昆虫种群的影响至关重要.
研究的目的:
- 研究春季温度,季节开始 (SOS) 和SOS的空间变化 (SV-SOS) 之间的关系.
- 确定SOS和SV-SOS是否可以解释德国南部的昆虫生物量和丰富度.
- 通过绿化动态评估气候变暖对森林昆虫群落的影响.
主要方法:
- 利用Sentinel-2卫星数据来推导季节开始 (SOS) 和SOS的空间变化 (SV-SOS).
- 分析了春季温度对SOS和SV-SOS的影响.
- 相关联的SOS和SV-SOS与不同土地使用类型和气候梯度的昆虫生物质和丰度数据.
- 森林,农田和其他息地之间的效应比较.
主要成果:
- 春季温度升高推进了SOS,并减少了SV-SOS.
- SOS和SV-SOS对昆虫生物量和丰富性的影响因土地使用类型而异,在森林中最为显著.
- 在森林中,更高的昆虫丰富度和生物量与后来的SOS和更高的SV-SOS有关.
- 温暖的气候条件与森林更早,更均的绿化有关.
结论:
- 气候变暖,通过更早,更均的春季绿化,可能会对森林昆虫生物质和丰富性产生负面影响.
- 保持森林绿化中的空间变异性是保护昆虫的有希望的适应策略.
- 加强森林中的植物物种和结构多样性可以促进SV-SOS并支持昆虫种群.
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