Institut für Biologie, Freie Universität Berlin, Berlin, Germany.
Berlin-Brandenburg Institute of Advanced Biodiversity Research (BBIB), Berlin, Germany.
Ecol Lett. 2021 Aug;24(8):1582-1593. doi: 10.1111/ele.13769. Epub 2021 May 29.
The stability of plant biomass production in the face of environmental change is fundamental for maintaining terrestrial ecosystem functioning, as plant biomass is the ultimate source of energy for nearly all life forms. However, most studies have focused on the stabilising effect of plant diversity, neglecting the effect of soil biodiversity, the largest reservoir of biodiversity on Earth. Here we investigated the effects of plant and soil biodiversity on the temporal stability of biomass production under varying simulated precipitation in grassland microcosms. Soil biodiversity loss reduced temporal stability by suppressing asynchronous responses of plant functional groups. Greater plant diversity, especially in terms of functional diversity, promoted temporal stability, but this effect was independent of soil biodiversity loss. Moreover, multitrophic biodiversity, plant and soil biodiversity combined, was positively associated with temporal stability. Our study highlights the importance of maintaining both plant and soil biodiversity for sustainable biomass production.
面对环境变化，植物生物量生产的稳定性对于维持陆地生态系统功能至关重要，因为植物生物量是几乎所有生命形式的最终能量来源。然而，大多数研究都集中在植物多样性的稳定作用上，而忽略了土壤生物多样性的作用，土壤生物多样性是地球上最大的生物多样性库。在这里，我们在草原微宇宙中研究了植物和土壤生物多样性对不同模拟降水下生物量生产时间稳定性的影响。土壤生物多样性的丧失通过抑制植物功能群的异步响应来降低时间稳定性。更多的植物多样性，特别是功能多样性，促进了时间稳定性，但这种效应与土壤生物多样性的丧失无关。此外，多营养生物多样性，即植物和土壤生物多样性的结合，与时间稳定性呈正相关。我们的研究强调了维持植物和土壤生物多样性对于可持续生物量生产的重要性。
