Soil nutrient and vegetation diversity patterns of alpine wetlands on the Qinghai-Tibetan Plateau

From June to August 2016–2018, 13 wetlands were investigated,Patrick index (R₀), Shannon index (H), Pielou index (J), and Simpson index (D) were chosen to calculate.Three cores (3.6 cm in diameter × 0–15 cm in depth) were collected in each quadrat and pooled to generate a mixed sample in each quadrat.Soil total nitrogen (TN) and total phosphorus (TP) were determined using the methods of Page et al. (1982), and soil total potassium (TK) was determined