养分添加对天山高寒草地植物多样性和地上生物量的影响

陈丽, 田新民, 任正炜, 董六文, 谢晨笛, 周小龙

Effects of nutrient addition on plant diversity and above-ground biomass in alpine grasslands of Tianshan Mountains, China

CHEN Li, TIAN Xin-Min, REN Zheng-Wei, DONG Liu-Wen, XIE Chen-Di, ZHOU Xiao-Long

表1 2020年氮(N)、磷(P)、钾(K)养分添加对天山高寒草地群落内常见物种相对多度的影响

Table 1 Effect of nitrogen (N), phosphorus (P) and potassium (K) addition on common plant species in terms of species relative abundance in alpine grasslands of Tianshan Mountains in 2020

种名 Species FG RSRAN RSRAP RSRAK RSRAN + P RSRAN + K RSRAP + K RSRAN + P + K 冰草 Agropyron cristatum G 0.45 0.37 0.57 0.88 1.28 0.31 0.78 草地早熟禾 Poa pratensis G 0.45 0.53 0.14 0.67 0.34 0.09 0.84 草 Koeleria macrantha G -0.03 -0.23 0.18 0.29 0.03 0.17 0.38 天山赖草 Leymus tianschanicus G 0.48 0.06 -1.04 -1.49 0.21 -0.20 -0.13 细果薹草 Carex stenocarpa G -0.12 0.02 -0.04 0.37 -0.15 -0.20 0.50 羊茅 Festuca ovina G 0.50 0.09 0.17 0.53 0.49 0.08 0.54 二裂委陵菜 Potentilla bifurca F 0.15 0.02 -0.15 0.08 -0.33 -0.09 0.07 莓叶委陵菜 Potentilla fragarioides F 0.23 -0.67 -0.29 -0.09 0.12 -0.32 -0.44 高山黄耆 Astragalus alpinus L -0.56 0.28 0.01 -0.97 -1.06 0.17 -0.84 小花棘豆 Oxytropis glabra L -0.29 -0.08 0.41 -1.30 0.27 -0.49 -0.57