广州长岗山森林土壤线虫的群落结构特征

Abstract

Abstract:

To understand the community structure and its seasonal change of soil nematode in urban forests of Southern China, the litter invertebrates in four plantation of Schima superba, Eucalyptus urophylla, Thyrsostachys siamensis, and Vatica astrotricha in Changgangshan Natural Reserve of Guangzhou were sampled monthly from January 2008 to December 2008. A total of 31 570 nematode individuals were collected, belonging to two classes, eight orders, 39 families and 93 genera. Aphelenchoides, Aphelenchus, and Nothotylenchus were the dominant genera in the experimental region and most of them lived in fall-litter. Based on trophic groups classification, the majority of soil nematodes in the four plantations was Bacterivores (BA) and Fungivores (FF); and the second-highest was Plant-feeding nematodes (PF).The maximum population density of nematodes occurred in October. The soil nematode density was significantly correlated to soil moisture (r=0.631;P<0.01). Species richness of Fungivorous nematodes was higher than others in different vegetation communities and soil depth. The total soil nematode density and the trophic groups varied significantly (P<0.01) with different months. The number of Bacterivores and Fungivores nematodes (P<0.01) and the value of WI changed significantly (P<0.05) in different months. The number of Fungivores and the value of WI varied significantly (P<0.01) in different soil depths. The value of H' varied significantly in different vegetation communities (P<0.05).

Key words: urban forest, nematode community, trophic groups, seasonal change, soil depth

CLC Number:

S714.3

Tong Fuchun, Xiao Yihua. Community Structure of Soil Nematodes in Changgangshan Natural Reserve of Guangzhou[J]. Scientia Silvae Sinicae, 2014, 50(2): 111-120.

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Community Structure of Soil Nematodes in Changgangshan Natural Reserve of Guangzhou

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