Evaluation of Characteristics Floristico-Edaphic of the Steppes at Alfa (<i>Stipa tenacissima</i>L.) in the Saida Region (Western Algeria)

作     者：Okkacha Hasnaoui Hassiba Meziane Amine Habib Borsali Mohamed Bouazza 

作者机构：Faculty of Sciences University Dr. Tahar Moulay Saida Algeria Laboratory of Ecology and Natural Ecosystems Management University of Tlemcen Tlemcen Algeria 

出 版 物：《Open Journal of Ecology》 (生态学期刊（英文）)

年 卷 期：2014年第4卷第14期

页      面：883-891页

学科分类：1002[医学-临床医学] 100214[医学-肿瘤学] 10[医学] 

主　　题：Evaluation Steppe Stipa tenacissima L. Soil Analysis Plant Diversity 

摘      要：To establish an assessment of floristic and edaphic characteristics of steppe formations we conducted a phytoecological study on a local scale by comparing the current plant diversity and soil in three (3) stations representative of the vegetation to alfa (Stipa tenacissima L.) located south of Saida (western Algeria). The relations between the station, the vegetation and the characteristics of soils in the steppe are very imperfectly known. This study intends to analyze the relationship between floristic composition and edaphic parameters of the steppe at alfa. Anthropogenic pressures on plant structure are different imbalance resulting in one ecological. The floristic and edaphic data have been the subject of a factorial correspondence analysis (A.F.C). The floristic inventory denotes a regressive dynamics of the formations at alfa passing from one site to another. Thus 39 plant species have been inventoried in the site in good condition, against 26 species for the moderately degraded site and 16 species only for the damaged site. The coupled results between species and edaphic parameters show the relations between the plant diversity and the physico-chemical characteristics of the soils. The statistical analyses do appear a strong correlation between floristic composition, the state of vegetation and the edaphic parameters.