Valkó Orsolya, Rádai Zoltán, Deák Balázs
Lendület Seed Ecology Research Group, Institute of Ecology and Botany, Centre for Ecological Research, Alkotmány Str. 2-4, Vácrátót, H-2163, Hungary.
Lendület Seed Ecology Research Group, Institute of Ecology and Botany, Centre for Ecological Research, Alkotmány Str. 2-4, Vácrátót, H-2163, Hungary.
J Environ Manage. 2022 Mar 3;311:114816. doi: 10.1016/j.jenvman.2022.114816.
As we enter the United Nations Decade on Ecosystem Restoration, there is an increasing need for finding nature-based solutions for the restoration of grasslands across the globe. Besides seed sowing, alternative restoration methods that build on locally available propagule sources, such as hay transfer, should also be considered and given high priority. The transfer of hay from a donor site to the restoration site serves a double aim by introducing target species and suppressing weeds. We tested the applicability of hay transfer in restoring species-rich grassland in a former cropland in Hungary, over six years of post-restoration monitoring from 2015 to 2020. We sampled the plant species composition of the three donor sites (target state of restoration) and the area surrounding the restoration site. We found that six year after restoration, a species-rich grassland developed with 42 successfully established specialist species that had a cover of 45%. Most specialist species became established from the hay from the second to the sixth year, but the surrounding areas also provided additional propagule sources. Among the eight analysed functional traits, seed mass of the transferred species was the best predictor of the establishment of specialists, and we found that small-seeded species had an establishment advantage in the first years after restoration. Our results suggest that hay transfer can be a suitable nature-based solution for local grassland restoration projects and its potential should be utilized especially in regions where suitable donor sites are present in sufficient quantity and quality.
随着我们进入联合国生态系统恢复十年，越来越需要找到基于自然的解决方案来恢复全球的草原。除了播种，还应考虑并高度优先采用基于当地可用繁殖体来源的替代恢复方法，例如干草转移。将干草从供体地点转移到恢复地点有双重目的，即引入目标物种和抑制杂草。我们在匈牙利一块 former cropland 中，通过2015年至2020年六年的恢复后监测，测试了干草转移在恢复物种丰富的草原方面的适用性。我们对三个供体地点（恢复的目标状态）和恢复地点周围区域的植物物种组成进行了采样。我们发现，恢复六年之后，形成了一个物种丰富的草原，有42种成功建立的 specialist species，其覆盖率为45%。大多数 specialist species 是在第二年到第六年从干草中建立起来的，但周边地区也提供了额外的繁殖体来源。在分析的八个功能性状中，转移物种的种子质量是 specialist species 建立的最佳预测指标，并且我们发现小种子物种在恢复后的头几年具有建立优势。我们的结果表明，干草转移可以成为当地草原恢复项目合适的基于自然的解决方案，其潜力应尤其在有足够数量和质量的合适供体地点的地区得到利用。
