Effects of Phyllostachys edulis Expansion on Soil Collembola Community Structure in South Subtropical Evergreen Broad-leaved Forest
To understand the impacts of Phyllostachys edulis expansion on soil Collembola community composi-tion and diversity,in the dry and rainy seasons from 2018 to 2019,we studied the Phyllostachy edulis,bamboo broad-leaved mixed forest,and evergreen broad-leaved forest in Liuxihe National Forest Park in Guangzhou.The results showed that:① A total number of 4455 soil Collembola were captured,belonging to 12 families and 27 genera,of which Folsomia,Pseudosinella,and Sminthurinus were the dominant genera.②In the sam-ple plots from different forest types,both individual density and the number of genera were higher in the rainy season than in the dry season.All the indicators were not significantly different among different forest types in the dry season.Individual density,genus richness,Shannon-Weiner diversity index,Simpson index and Mar-galef index in the rainy season were Phyllostachy edulis＞Bamboo-broad mixed forest＞evergreen broad-leaved forest,and Pielou evenness was Bamboo-broad mixed forest＞Phyllostachy edulis＞evergreen broad-leaved for-est.③ With the expansion of Phyllostachys edulis,there were significant reductions in β-glucosidase enzyme,acid phosphatase,β-N-acetylglucosaminidase,and soil organic carbon of the litter layer,which led to a signifi-cant increase in Collembola density and genus richness,as did the diversity.However,it was reduced that the Collembola diversity of the transition area formed during the expansion.The dominant genera and common gene-ra were similar during different expansion stages among different forest types,which indicated that the soil Col-lembola community was stable in the expansion of Phyllostachys edulis to some extent.
expansion of Phyllostachys edulissoil collembolacommunity characteristicsevergreen broad-leaved forestGuangzhou Liuxihe Forest Park
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