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Fig. 1. T-GRSP and EE-GRSP contents in different successional stages of alpine grassland. Different capital letters indicate significant differences between two soil layers in the same successional stages, and different lowercase letters indicate significant differences among different successional stages in the same soil layers at P<0.05 level. GK: Gramineae-Kobresia humilis community; K: Kobresia humilis community; KT: Thickened mattic epipedon ofKobresia pygmaea community; KC: Cracked mattic epipedon ofKobresia pygmaea community; FB: Forb-black soil type grassland.
Table 1 Soil physicochemical property in different succession states of alpine grassland