Table 2.

Effects of plant species on the different bee functional groups

Functional groups	Explanatory variables	P-value	Estimate of PCs	Effects of plant species with high loading in PCs (estimate)
Overall bees	PC1	0.005	−	Convolvulus arvensis (−), Amygdalus persica (−), Malus pumila (−)
	PC3	0.009	+	Vitex negundo (+), Artemisia argyi (+), Cerasus pseudocerasus (−)
	PC6	0.035	+	Digitaria sanguinalis (+), Cirsium setosum (+), Trigonotis peduncularis (+)
	PC7	0.014	+	Artemisia argyi (+), Artemisia capillaries (+), Portulaca oleracea (−)
Small-sized bees	PC4	0.038	−	Humulus scandens (+), Vitex negundo (−), Amygdalus persica (−)
	PC6	0.008	+	Digitaria sanguinalis (+), Cirsium setosum (+), Trigonotis peduncularis (+)
Large-sized bees	PC4	0.036	+	Vitex negundo (+), Amygdalus persica (+), Humulus scandens (−)
Social bees	PC6	0.017	+	Digitaria sanguinalis (+), Cirsium setosum (+), Trigonotis peduncularis (+)
Solitary bees	PC3	0.003	+	Vitex negundo (+), Artemisia argyi (+), Cerasus pseudocerasus (−)
Aboveground-nesting bees	PC4	0.012	+	Vitex negundo (+), Amygdalus persica (+), Humulus scandens (−)
	PC5	0.018	+	Cerasus pseudocerasus (+), Humulus scandens (+), Malus pumila (−)
Belowground-nesting bees	PC3	0.010	+	Vitex negundo (+), Artemisia argyi (+), Cerasus pseudocerasus (−)
	PC6	0.010	+	Digitaria sanguinalis (+), Cirsium setosum (+), Trigonotis peduncularis (+)

−, negative effect; +, positive effect.