Nutrient Enrichment Mediates the Relationships of Soil Microbial Respiration with Climatic Factors in an Alpine Meadow

Table 2

Monthly means (data in the parentheses represent the SE, ) of aboveground biomass (AGB) in 2010, 2011, and 2012. Different letters in the same month within the same year indicate significant difference () in monthly averages among treatments. See Figure 1 for abbreviations.

		CK	LN	HN	LN + P	HN + P
2010	Jul.	65.3 (6.4)^a	66.0 (19.5)^a	65.8 (16.6)^a	87.6 (18.3)^b	65.7 (16.2)^a
	Aug.	89.7 (18.8)^a	108.9 (28.3)^ab	91.4 (14.3)^a	130.2 (34.1)^bc	141.9 (43.1)^c
	Sep.	94.7 (33.8)^a	103.1 (31.4)^a	82.3 (20.6)^a	136.9 (22.9)^b	131.8 (28.8)^b
2011	Jul.	38.2 (12.9)^a	44.4 (19.6)^ab	30.8 (12.1)^a	72.6 (16.1)^c	56.5 (16.1)^b
	Aug.	81.8 (28.7)^a	116.6 (53.8)^ab	77.6 (30.3)^a	159.8 (66.9)^b	151.3 (75.1)^b
	Sep.	81.6 (30.5)^a	101.4 (32.3)^ab	80.1 (22.0)^a	136.2 (58.7)^b	129.0 (43.8)^b
2012	Jul.	55.5 (11.3)^b	54.0 (17.6)^b	37.2 (19.2)^a	102.0 (24.7)^c	73.6 (21.0)^c
	Aug.	157.7 (86.6)^a	182.9 (39.4)^a	149.7 (69.1)^a	281.9 (74.9)^b	326.2 (84.0)^b
	Sep.	91.8 (29.7)^a	91.7 (30.5)^a	101.6 (22.0)^a	180.9 (46.1)^b	204.3 (50.8)^b