官港湿地苘麻-狗尾草草地群落结构分析

Analysis on Community Structure of Abution-Foxtail Grass in Guangang Wetlands

为了解官港湿地野生草地群落的生态结构和发展状况,有效保护当地植物资源,通过样方调查,分析了该区草本群落植物的种类、数量、盖度、高度、频度、多度、重要值、综合优势比、丰富度、均匀度Pielou指数和多样性Shannon-Wiener指数。结果表明,样地现有野生草本植物14种,隶属14个属,8个科。苘麻优势度最大为0.802,狗尾草次之为0.684,扁蓄最小为0.108;苘麻多度最大为64.2,狗尾草次之为44.6,扁蓄和菟丝子多度最小为0.2;苘麻盖度最大为35.4,星星草次之为32.2,扁蓄最小为0.056;苘麻、狗尾草、砂引草和碱蓬频度最大为80%,扁蓄和菟丝子最低为20%;群落的多样性指数为2.4,均匀度指数为0.92。综合分析得出:草地群落中苘麻、狗尾草为优势种,星星草为亚优势种,砂引草、碱蓬为伴生种,扁蓄、菟丝子为偶见种。

In order to understand the ecological structure and development of wild grassland community in Guangang wetlands, and pro- tect the local plant resources effectively, the species, quantity, cover, height, frequency, abundance, important value, integrated odds ra- tio, richness, Pielouindex and Shannon-Wienerindex of herbaceous plant communities were analyzed by quadrat survey. The results showed that the likewise had 14 kinds of wild herbs which belongs to 14 genera and 8 families. Among them, the highest dominance was 0.802 of Abutilorr, followed was 0.684 of FoxtaE, the lowest was 0.108 of Flat storage. The highest abundance was 64.2 of Abutilon, fol- lowed was 44.6 of Foxtail, the lowest was 0.2 of F/at storage and Dodder. The highest cover was 35.4 of Abutilon, followed was 32.2 of Star grass, the lowest was 0.056 of F/at storage. The highest frequency was 80% of Abutilon, Foxtail, Messerschmidia grass and Suaeda, the lowest was 20% of F/at storage and Dodder. The Shannon-Wienerindex was 2.4 and Pielouindex was 0.92. The research conclution was that the dominant species were A butilon and Foxtail, subdominant species was Star grass, associated species were Messerschmidia grass and Suaeda, rare species were F/at storage and Dodder.