海南省红树林区大型底栖动物多样性的初步研究

为了解海南省红树林区的大型底栖动物群落结构及多样性现状,2009年6月对海南省7个主要红树林区进行大型底栖动物调查,采用Shannon-Wiener多样性指数(H′)、Pielous种类均匀度(J′)、Berger-Parker优势度指数(Y)、多样性阈值(Dv)等进行种类多样性评价。结果表明,调查所采获的大型底栖动物共56种,以软体动物和甲壳类动物为主。红树林区大型底栖动物平均生物量137.67 g/m2,平均栖息密度为307.64个/m2。H′甚高,在1.94~3.41,J′在0.52~0.90,Dv达到1.01~3.07,种类多样性基本处于非常丰富和较好的水平。

Preliminary Study on Macrozoobenthos Diversity in Mangrove Area of Hainan Province

To understand the status of community structure and diversity of macrozoobenthos in mangrove area of Hainan Province, investigations on macrozoobenthos in 7 mangrove areas of Hainan Province were done in June 2009, and species diversity was evaluated using Shannon-Wiener diversity index (H'), Pielous species evenness (J'), Berger-Parker dominant degree (Y ) and Dv index. A total of 56 species of macrozoobenthos were investigated in which mollusks and crustaceans were main groups. The average biomass and density were 137.67 g/m2 and 307.64 ind/m2, respectively. H' valve was very high, ranging from 1.94 to 3.41. J' valve ranged from 0.52 to 0.9, and Dv valve in the range of 1.01 to 3.07. Species diversity was basically in a very rich and good level.