【摘要】 报道 1994年和 1999年福田红树林害虫、其它昆虫及蜘蛛的调查结果 . 1994年在红树林采到昆虫96种及蜘蛛 7种 ,其中天敌昆虫 37种 ,占已知种类的 35 8% ;1999年采到昆虫 5 3种及蜘蛛 5种 ,其中天敌昆虫 13种 ,占已知种类 2 4% .对红树林造成为害和具有潜在危害的种类也有所增加 .Shannon_Wiener多样性指数 (H)、均匀度指数 (J)和丰富度指数分别为 :H1994 =2 47,H1999=1 6 4,J1994 =0 5 4,J1999=0 42 ,D1994 =16 1,D1999=9 37.分析结果显示 ,1999年红树林生态环境比 1994年急剧恶化 ,这是红树林害虫发生的根本原因 .更多还原

【Abstract】 The studied results to insects and spiders, which were collected from mangrove of Futian of Shenzhen in 1994 and 1999, are reported 96 species of insects and 7 species of spiders were obtained, of which 37 species of insects, i e 35 8% of known species of insects, are enemies to pest insects in 1994 However, only 53 species of insects and 5 species of spiders were obtained, of which 13 species of insects, i e 24% of known species, are enemies to pest insects in 1999 Shannon_Wiener bio_diversity index H and evenness index J is H\-\{1994\}=2 47, H\-\{1999\}=1 64; J\-\{1994\}=0 54, J\-\{1999\}=0 42. The results showed that the environment in 1999 was worse than in 1994 The outbreak of pest insects in mangrove was due to the very bad environment更多还原