Vegetation ecological dike experiment at River Danube

We conducted an restoration experiment on a dike at River Danube near Deggendorf. For the experiment we seeded 288 plots (2 x 3 m²) in 2018. The vegetation was surveyed until 2021. We established a full-factorial design on both dike expositions (north, south). The full set of treatments was replicated within six blocks. We used two different seed mix types (lowland hay meadow vs. dry grassland), two seed densities (4 vs. 8 g/m²), two soil depths (15 vs. 30 cm), and three sand admixtures (0, 25, 50%). The seed mixtures had two different species pools and each single mixture had an individual subset of 20 species out of the two species pools.我们在德根多夫附近的多瑙河堤防上开展了一项恢复实验。2018年，我们在实验中播种了288个样方（2×3平方米），并对植被开展调查直至2021年。我们在堤防的两种朝向（北、南）上采用了完全析因设计（full-factorial design），并将全套处理在六个区块内进行重复。实验采用了两种不同的种子混合物类型（低地干草甸型 vs 干旱草原型）、两种种子密度（4 vs 8克/平方米）、两种土壤深度（15 vs 30厘米）以及三种沙掺混比例（0%、25%、50%）。种子混合物包含两个不同的物种库（species pools），每个单独的混合物均由来自这两个物种库的20个物种组成独立子集。