Wang Ran, Gamon John A, Hogan Katharine F E, Kellar P Roxanne, Wedin David A
School of Natural Resources, University of Nebraska-Lincoln, Lincoln, NE, 68583, USA.
Lauritzen Gardens, Omaha, NE, 68108, USA.
New Phytol. 2025 Jul;247(2):562-576. doi: 10.1111/nph.70195. Epub 2025 May 14.
Grassland restoration efforts aim to reestablish vegetation cover and maintain ecosystem services. However, there is a lack of systematic evaluation of the effects of grassland restoration and management strategies on biodiversity, productivity and surface-atmosphere feedbacks affecting climate. Through a multiyear grassland restoration experiment in a tallgrass prairie site in Nebraska, USA, we investigated how different management practices affected biodiversity, productivity and surface-atmosphere feedbacks using a combination of in situ measurements and airborne hyperspectral and thermal remote sensing. Our findings indicated that management treatments affected vegetation diversity, productivity and energy balance. Higher diversity plots had higher plant growth, albedo, canopy water content and lower surface temperature, indicating clear effects of management treatments on grassland ecosystem processes influencing surface-atmosphere feedbacks of mass and energy. The coherent responses of multiple airborne remote sensing indices illustrate potential cobenefits of grassland restoration practices that enhance ecosystem productivity and biodiversity and mitigate climate change through surface-atmosphere feedbacks, offering a new strategy to address the challenges of biodiversity loss and climate change in grassland ecosystems.
草原恢复工作旨在重新建立植被覆盖并维持生态系统服务。然而，目前缺乏对草原恢复和管理策略对生物多样性、生产力以及影响气候的地表-大气反馈效应的系统评估。通过在美国内布拉斯加州一个高草草原站点进行的多年草原恢复实验，我们结合实地测量、机载高光谱和热遥感技术，研究了不同管理措施如何影响生物多样性、生产力和地表-大气反馈。我们的研究结果表明，管理措施影响了植被多样性、生产力和能量平衡。多样性较高的地块植物生长更好、反照率更高、冠层含水量更高且地表温度更低，这表明管理措施对影响质量和能量地表-大气反馈的草原生态系统过程有明显影响。多种机载遥感指数的一致响应表明，草原恢复措施具有潜在的协同效益，即通过地表-大气反馈提高生态系统生产力和生物多样性，并缓解气候变化，为应对草原生态系统生物多样性丧失和气候变化挑战提供了一种新策略。
