荆江河岸外侧弃耕地植物物种多样性季节动态  

Season Dynamic of Plant Species Diversity in the Abandoned-field along the Jingjiang River near the Yangtze River

作　　者：陈中义[1] 宋士盛[1] 

机构地区：[1]长江大学园艺园林学院,湖北荆州434025

出　　处：《安徽农业科学》2005年第2期232-233,共2页Journal of Anhui Agricultural Sciences

基　　金：国家自然科学基金重大项目 (39893360 )资助

摘　　要：研究了长江荆江段学堂洲一个 3年弃耕地的植物在春季、夏季、秋季和冬季的物种多样性。结果表明 :该地植物物种丰富 ,共有3 9科 ,10 0属 ,13 9种。根据生物量计算出的 4类物种多样性指数都反映出植物物种多样性大小顺序为春季 >夏季 >秋季 >冬季。该弃耕地上植物物种的季节性替代明显 ,水平结构在不同季节变化也大 ,即在该弃耕地演替的早期 。The plant species diversity in the three years abandoned-field along the Jingjiang River near the Yangtze River was investigated. It was found that there were total 139 species, 100 genus, 39 families in Autumn, Winter, Spring and Summer. Shannon-Wiener index, Simpson index, Evenness index and Purity index were calculated according to species biomass values. The species diversity was the highest in Spring, next in Summer and Autumn, and the lowest in Winter. There was a very distinct different in plant species with seasons. The horizontal structure of plant species in plots also obviously changed in different seasons. These indicated that the plant species diversity of abandoned-field along the Jingjiang River had greater season fluctuation in early succession period.

关 键 词：弃耕地 植物物种 秋季 季节动态 春季 冬季 夏季 物种多样性指数 演替 植物多样性 

分 类 号：S718.3[农业科学—林学] Q146[生物学—生态学]