نوع مقاله : مقاله پژوهشی
نویسندگان
1 مدیر و استادیار گروه مهندسی آبخیزداری دانشکده منابع طبیعی و علوم دریایی دانشگاه تربیت مدرس، نور، مازندران
2 دانش آموخته مهندسی مرتعداری دانشکده منابع طبیعی و علوم دریایی دانشگاه تربیت مدرس، نور، مازندران
3 استاد دانشکده منابع طبیعی دانشگاه مازندران، ساری
چکیده
کلیدواژهها
عنوان مقاله [English]
نویسندگان [English]
The natural resources of the country have been seriously damaged in recent decades and resulting many dire consequences such as water deficiency, floods and land degradation. In this research, in order to study the effects of open grazing management and alfalfa cultivation on runoff generation, the Matash region located in Talesh mountainous spring-fall rangeland with area of 500 ha was selected. To achieve the study objectives, three plots in dimensions of 1.83×22.18 meters were established in three replications in each area. The results of storm water among replications and in two above-mentioned areas were then compared using ANOVA and paired sample t-Test, respectively. The relationship between vegetation variations and rainfall characteristics was also investigated in terms of runoff generation in two study treatments. The results have shown that there is a significant difference in runoff generation in two above-mentioned areas at the confidence level of 99%, whereas no significant difference was found among replications. The results of runoff generation was also found to be 5.5 folds more in case of open grazing treatment comparing with those generated by planted plots. From the results of regression analyses and the amounts of estimation errors, it has been also implied that runoff quantity could be significantly affected by rainfall only under open grazing plots.
کلیدواژهها [English]