Rangeland suitability model for sheep grazing in Chahtalkh-sabzevar Rangelands
Message:
Abstract:
This research was aimed to determine the rangeland suitability for sheep grazing in Chahtalkh- Sabzevar rangelands using FAO (1990) method. Initially, the DGN maps, including six sheets of 1:25000, topographic map of 1:50000, and geological map of 1:100000 of the study area were prepared and the vegetation types were detected. In each vegetation type, range condition, range trend and production were determined to produce the production suitability map. Then, the soil erosion sensitivity map was prepared using EPM method. To study the suitability of water, water sampling was done and the quantity of water was determined. Water samples were transferred to the laboratory to measure TDS, EC and Mg+2 for each sample. Finally, the suitability map of water resources was produced by combining the layers (provided for four slopes including 0-10%, 10-30%, 30-60% and >60%). The final model of rangeland suitability was prepared by overlaying the maps of production suitability, soil susceptibility to erosion and water. According to the obtained results, there is no suitability S1 class in the region and 23.7%, 18.92%, and 56.9% of the study area have S2, S3, and N suitability classes, respectively. Generally, it can be said that the conversion of rangeland to dryland, overgrazing and early grazing, formations susceptible to erosion, low vegetation cover, salinity, and improper distribution of drinking water sources for livestock are considered as the most important limiting factors for sheep grazing.
Language:
Persian
Published:
Iranian Journal of Range and Desert Research, Volume:21 Issue: 3, 2014
Pages:
394 to 408
magiran.com/p1373436  
دانلود و مطالعه متن این مقاله با یکی از روشهای زیر امکان پذیر است:
اشتراک شخصی
با عضویت و پرداخت آنلاین حق اشتراک یک‌ساله به مبلغ 990,000ريال می‌توانید 70 عنوان مطلب دانلود کنید!
اشتراک سازمانی
به کتابخانه دانشگاه یا محل کار خود پیشنهاد کنید تا اشتراک سازمانی این پایگاه را برای دسترسی نامحدود همه کاربران به متن مطالب تهیه نمایند!
توجه!
  • حق عضویت دریافتی صرف حمایت از نشریات عضو و نگهداری، تکمیل و توسعه مگیران می‌شود.
  • پرداخت حق اشتراک و دانلود مقالات اجازه بازنشر آن در سایر رسانه‌های چاپی و دیجیتال را به کاربر نمی‌دهد.
دسترسی سراسری کاربران دانشگاه پیام نور!
اعضای هیئت علمی و دانشجویان دانشگاه پیام نور در سراسر کشور، در صورت ثبت نام با ایمیل دانشگاهی، تا پایان فروردین ماه 1403 به مقالات سایت دسترسی خواهند داشت!
In order to view content subscription is required

Personal subscription
Subscribe magiran.com for 50 € euros via PayPal and download 70 articles during a year.
Organization subscription
Please contact us to subscribe your university or library for unlimited access!