بررسی کاربرد سامانه اطلاعات جغرافیایی ‭GIS‬در تهیه و تدوین نقشه پراکنش علف های هرز مزارع گندم آبی و دیم استان خوزستان

In order to identification and determination of density,frequency and uniformity of weeds in wheat fields ,this survey was condocted Central and Southern regions of khuzestan province during 2001- 2004.In this years five was conducted in Ahvaz,Ramhormoz,Omidieh,Baghmalek,Dasht-e- Azadegan,Khoramshahr,Behbehan,Mahshahr and Shadegan cities.82 farms were selected based on acreage from all cities characterization of plantsinclud: scientific name,persion name,growth stage and density)recorded in 601 quaderat (0.5*0.5). and relative frequency,uniformity,density of species and mean of density of species in mentioned farms were calculate based on related formula.The results Based showed that these weeds: Sinapis arvensis, Malva neglecta, Avena Ludoviciana, Phalaris minor, Lolium, prenne Ammi majus, Polypogon monspeliense, Vicia narbonensis, Trifolium repens, Melilotus officinalis, Centaurea calcitrapa Agrostis stolonifera, Anaghalis arvensi, Silybum marianum , Beta maritima ,Vicia cracca Vaccaria pyramidata ,Hirschfeldia incana ,Papaver dubium and Hordeum spantaneum had the highest density, frequency and the highest uniformity percentage means. Key Word:Weed maping, Abundance Index (AI), Frequency, Uniformity, Mean Field Density, khuzestan

Keywords:

نظام های اطلاعاتی جغرافیایی , نقشه برداری , علف های هرز , گندم ها , کشتزارها , خوزستان