tailieunhanh - Spatial pattern analysis of Peganum harmala on the salted lower Chelif plain, Algeria
Peganum harmala L. (Zygophyllaceae), native to arid and semiarid rangeland, has been widely studied biochemically, pharmaceutically, and medicinally, but is largely unknown ecologically. In the lower Chelif, Algeria, this plant is largely present and shows a clear clumped pattern, which indicates the strong effects of environmental conditions | Turkish Journal of Botany Turk J Bot (2013) 37: 111-121 © TÜBİTAK doi: Research Article Spatial pattern analysis of Peganum harmala on the salted lower Chelif plain, Algeria 1, 2 3 1 Adda ABABOU *, Mohammed CHOUIEB , Abdelkader BOUTHIBA , Djamel SAIDI , 3 4 Mahfoud M’HAMEDI BOUZINA , Khalladi MEDERBAL 1 Department of Biology, Faculty of Sciences, University of Hassiba Ben Bouali, Chlef, Algeria 2 Department of Agronomy, Faculty of Science and Engineering, University of Abd El Hamid Ibn Badis, Mostaganem, Algeria 3 Department of Agronomy, Institute of Agronomical Sciences, University of Hassiba Ben Bouali, Chlef , Algeria 4 Department of Biology, Faculty of Science and Earth Sciences, University of Mustapha Stambouli, Mascara, Algeria Received: Accepted: Published Online: Printed: Abstract: Peganum harmala L. (Zygophyllaceae), native to arid and semiarid rangeland, has been widely studied biochemically, pharmaceutically, and medicinally, but is largely unknown ecologically. In the lower Chelif, Algeria, this plant is largely present and shows a clear clumped pattern, which indicates the strong effects of environmental conditions. Our redundancy analysis showed that the geographic distribution of this species was positively correlated with sand and pH and negatively correlated with conductivity, Na+, and clay. The Gaussian model suggested that mmhos/cm conductivity and sand contents greater than 40% are optimum for this plant. The spatial distribution map obtained through the kriging method in geographic information systems (GIS) revealed a complete absence of this plant on the eastern side of the study area, but a high degree of clumping on the western peripheries of the study area, which is characterised by a particular range of environmental conditions very favourable to P. harmala. Key words: Peganum harmala, pattern analysis, redundancy analysis,
đang nạp các trang xem trước
