辽宁省主要人工林林下植被组成及生物多样性

通过对辽宁省人工落叶松林、油松林、杨树林、刺槐林林下植被的种类、盖度、密度进行调查,采用Shannon-Wiener多样性指数、Simpson多样性指数、Pielou均匀性指数研究4种人工林群落下的植被物种组成和生物多样性。研究结果表明:①刺槐林生物多样性最为丰富。②草本层相对于灌木层物种更为丰富,草本植物物种以禾本科最多,其次为菊科。③人为干扰对林下植被影响最大。

Species Composition and Biodiversity of Understory Vegetation in Liaoning Province

By investigation of the vegetation type,coverage,density of artificial larch forest,poplar forest,locust forest in Liaoning Province,Shannon-Wiener index,Simpson index and Pielou index were used to study the species biodiversity of the forest understory vegetation community.The results show that: the biodiversity of locust forest is the biggest.The species richness and biodiversity of these forest is mainly affected by herb layer.Gramineae is the most species,followed by Compositae.The species richness and biodiversity is mainly affected by jamming.