بررسی غنا، تنوع و یکنواختی گیاهان در پهنه‌های ژئومورفولوژیک حوزة آبخیز آدرشک (استان یزد-شیرکوه)

نوع مقاله : مقاله پژوهشی

نویسندگان

گروه محیط زیست، دانشکده منابع طبیعی، دانشگاه یزد، یزد، ایران

چکیده

توجه به حفظ پوشش ­گیاهی یکی از ارکان طراحی و مدیریت مناطق است. بدین‌منظور در این پژوهش، به مطالعة بررسی غنا، تنوع و یکنواختی گیاهان در پهنه ­های ژئومورفولوژیک حوزة ­آبخیز آدرشک پرداخته شد. در محیط نرم­افزار Arc GIS، با استفاده از نقشة توپوگرافی ژئورفرنس شده، مرز منطقه طبق اصول کارتوگرافی ترسیم شد. پهنه ­های ژئومورفولوژیک زیستگاه از طریق تفسیر چشمی تصاویر نرم ­افزار Google Earth شناسایی و در نرم ­افزار  Arc GISنقشة آن تهیه شد. در طول فصل ­های بهار و تابستان سال 1398 به شناسایی گیاهان آدرشک پرداخته شد. در مجموع میزان پوشش ­گیاهی منطقة 16/56درصد محاسبه شد. برای محاسبه غنا، تنوع و یکنواختی گیاهان از شاخص­ های تنوع ­زیستی و از آزمون کروسکال- والیس برای مقایسه شاخص ­های تنوع ­زیستی در پهنه­ های ژئومورفولوژیک استفاده شد و در صورت معنی­ دار بودن اختلاف‌ها، گروه ­ها دو به دو با آزمون من-ویتنی مورد مقایسه قرار گرفتند. نتایج آزمون کروسکال-والیس نشان داد که اختلاف پهنه ­های ژئومورفولوژیک از نظر تمام شاخص­ ها در سطح یک درصد معنی­ دار است. نتایج آزمون من-ویتنی نشان داد که مناطق واریزه­ای از نظر غنا، بالاتر از مناطق صخره­ای و آبرفتی هستند.

کلیدواژه‌ها

عنوان مقاله [English]

Investigation of richness, diversity and uniformity of plants in geomorphological zones of Adoroshk watershed (Yazd-Shirkuh province)

نویسندگان [English]

  • Somayeh Arazi
  • Mohammad Hosein Irannezhadparizi
  • Ahad Sotoudeh
  • Bahman Kiani

Department of Environment, Faculty of Natural Resources, Yazd University, Yazd, Iran

چکیده [English]

Paying attention to vegetation preservation is one of the pillars of design and management of areas. For this purpose, in this study, the study of richness, diversity and uniformity of plants in the geomorphological zones of Adoroshk watershed was studied. In Arc GIS software environment, using georeferenced topographic map, the boundary of the area was drawn according to cartographic principles. Habitat geomorphological zones were identified by visual interpretation of Google Earth software images and mapped in Arc GIS software. During the spring and summer of 2019, Adoroshk plants were identified. In total, the amount of vegetation in the area was 16.56%. Biodiversity indices were used to calculate the richness, diversity and uniformity of plants and Kruskal-Wallis test was used to compare biodiversity indices in geomorphological zones. If the differences were significant, the groups were divided into two. The two were compared by Mann-Whitney test. The results of the Kruskal-Wallis test showed that the difference of geomorphological zones in terms of all indicators is significant at the level of one percent.  The Mann-Whitney test showed that the deposit areas are richer in terms of richness than the rocky and alluvial areas.

کلیدواژه‌ها [English]

  • Adoroshk
  • Geomorphological zone
  • Biodiversity indicators
  • Kruskal-Wallis
  • Mann-Whitney
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