نوع مقاله : پژوهشی
نویسندگان
1 دانش‌آموخته مقطع دکتری مرتعداری، محقق و مدرس دانشکده منابع طبیعی، دانشگاه ارومیه
2 استاد دانشکده منابع طبیعی دانشگاه تهران
3 دانشیار دانشکده منابع طبیعی دانشگاه تهران
4 دانشیار دانشکده منابع طبیعی دانشگاه ارومیه
چکیده
کلیدواژه‌ها
عنوان مقاله [English]
نویسندگان [English]
In order to study the effect of rangeland improvement operations on vegetation properties, a study was conducted at Imam Kandi rangelands. In the present study, improvement operations including pit seeding, exclusion and counter trenches were selected at region and control region was considered for each region. the systematic-randomly method was used, six 100 m transect was established on each sites and along each them ten 10*10 plot for sampling was selected. Within each plot, existing species table, crown cover percent, palatability classes, production, density and vegetation growth forms was recorded. In order to comparison of vegetation properties at sites with improvement operation within control site independent t-test was used. Results showed that plants in classes I and II at improved regions increased and plants III decreased compared to control and had significant difference. In terms of growth forms, mean properties of permanent graminea and permanent forbs at improved region increased and had a significant difference with control site. Overall, results show that improvement operation at Imam Kandi rangelands was successful and caused improvement of vegetation cover properties in these rangeland area.
کلیدواژه‌ها [English]
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