摘要
在皇甫川流域,分别选择原生植被区、人工恢复治理区和退化未治理区3个样区,对其物种组成特征、优势种重要值、物种多样性特征等进行了对比分析。结果表明:人工恢复治理区经过20余年的小流域治理,其植被的区系组成、优势种组成和物种丰富度已接近原生植被区,生态优势度则显著高于退化未治理区和原生植被区,但其生活型谱、水分生态类型组成特征与未治理区相似而与原生植被区差异较大,均匀度和信息多样性指数则低于退化未治理区和原生植被区。文中还对流域治理过程中植被重建措施及生物多样性恢复等问题进行了初步探讨。
The three sample areas of original, degenerated and reconstructed vegetation in Huangfuchuan basin were chosen. The comparing analysis was carried on the species composition, dominant species important index and species diversity. The results showed that the species composition, dominant species construction and species richness of the reconstructed area had nearly approached the original vegetation area by over 20 years of small watershed reconstructing, and its ecological dominance was apparently higher than the degenerated area and the original vegetation area, but its life form spectrum and water ecotypes were similar with the degenerated area while different from the original vegetation area. Its species evenness and information diversity index were lower than the degenerated area and the original vegetation area. The problems of vegetation reconstructing methods and biodiversity restoration were discussed.
出处
《水土保持学报》
CSCD
北大核心
2003年第6期125-128,共4页
Journal of Soil and Water Conservation
基金
国家重点基础研究发展规划项目(编号:G2000018604)
国家自然科学基金(编号:30060018)
内蒙古自治区教育厅重点科研项目(编号:ZD9903)
关键词
区系组成
物种丰富度
生态优势度
植被重建
species composition
species richness
ecological dominance
vegetation reconstructing
