College of Hydraulic and Environmental Engineering, China Three Gorges University, Yichang, China.
Engineering Research Center of Eco-Environment in Three Gorges Reservoir Region of Ministry of Education, China Three Gorges University, Yichang, China.
Ecol Lett. 2023 Jun;26(6):858-868. doi: 10.1111/ele.14202. Epub 2023 Mar 15.
Understanding the effects of diversity on ecosystem stability in the context of global change has become an important goal of recent ecological research. However, the effects of diversity at multiple scales and trophic levels on ecosystem stability across environmental gradients remain unclear. Here, we conducted a field survey of α-, β-, and γ-diversity of plants and soil biota (bacteria, fungi, and nematodes) and estimated the temporal ecosystem stability of normalized difference vegetation index (NDVI) in 132 plots on the Mongolian Plateau. After climate and soil environmental variables were controlled for, both the α- and β-diversity of plants and soil biota (mainly via nematodes) together with precipitation explained most variation in ecosystem stability. These findings evidence that the diversity of both soil biota and plants contributes to ecosystem stability. Model predictions of the future effects of global changes on terrestrial ecosystem stability will require field observations of diversity of both plants and soil biota.
理解在全球变化背景下多样性对生态系统稳定性的影响已成为近期生态学研究的一个重要目标。然而，在环境梯度上，多种尺度和营养层次的多样性对生态系统稳定性的影响仍不清楚。在这里，我们对蒙古高原 132 个样地的植物和土壤生物（细菌、真菌和线虫）的 α、β 和 γ 多样性进行了实地调查，并估计了归一化植被差异指数（NDVI）的时间生态系统稳定性。在控制了气候和土壤环境变量后，植物和土壤生物（主要通过线虫）的 α 和 β 多样性以及降水量共同解释了生态系统稳定性的大部分变化。这些发现表明，土壤生物和植物的多样性都有助于生态系统的稳定性。对未来全球变化对陆地生态系统稳定性影响的模型预测将需要对植物和土壤生物多样性进行实地观测。
