جستجوی مقالات مرتبط با کلیدواژه « mazandaran » در نشریات گروه « اکولوژی »

Rangeland management method is one of the important aspects of rangeland management activities. In livestock grazing management, according to the grazing system and rangeland management method, it is possible to promote the rangeland condition with low cost and optimal management. Therefore, in this study, for the optimal management of Lar Absar rangeland in Mazandaran province, the grazing system and rangeland management method were considered. In this research, the degree of rangeland condition in each vegetation type using the four-factor method and rangeland trend was also determined by grazing system and rangeland method. The results showed that all vegetation types of Lar Absar rangeland have a moderate and good condition and their tendency is constant and in some types is positive. In vegetation type of (Festuca ovina- Onobrychis cornuta) and (Bromus tomentellus- Hordeum bulbosum). Due to the good condition and positive tendency, range management method of Balanced is suggested and in it, efforts should be made to maintain good rangeland conditions. Premature grazing is prevented by segmenting these two vegetation types and implementing a grazing rotation program and due to the large number of livestock per unit area, forage loss is prevented. As a result, forage grazing will be done uniformly and when the livestock is moved to another plot, the plants in the first plot are given the opportunity to continue growing.In other types of Lar Absar rangeland, the rangeland management method will be natural, so that by improving the plant composition in a natural method, plants will be given the opportunity to regenerate and replacement and while giving sufficient opportunity to the plants, the maximum use of forage is done. Therefore, before any intervention in rangeland ecosystems, the rangeland management method should be selected based on the condition and trend, and as far as possible improved rangeland vegetation naturally and by choosing the appropriate grazing system and avoided other costly methods. It seems that selection of appropriate rangeland management methods and grazing systems in vegetation types can be a useful and effective step for rangelands.

Recognizing of plants present in a region is considered as a baseline study for ecological research, management and conservation of plants. The purpose of this study was to collect and identify  the plants of Azizak and Paein Ahmad kola Wetlands of Babolsar in Mazandaran province. After specifying the boundaries of the study areas on the map and conducting field visits, the plants were collected , dried and identified . A total of 84 species belonging to78 genera and 36 families in Azizak wetland and a total of 95 species belonging to 85 genera and 39 plant families in Paein Ahmadkola wetland have been collected and identified. In Azizak and Paein Ahmad kola wetlands, plants of Poaceae family with 15 and 18 species and Asteraceae with 11 and 15 species were the richest plant families, respectively. Examination of plant life forms showed that therophytes had the highest rate in Azizak wetland with 28.92% and in Paein Ahmad kola wetland with 43.62%. In terms of geographical distribution, most species belonged to pluriregional elements with 66.27% in Azizak wetland and 65.96% in Paein Ahmad kola wetland. In general, floristic study of plants in wetland ecosystems can be one of the first steps to identify these ecosystems which in turn can provide the basis for more comprehensive studies.