نوع مقاله : علمی - پژوهشی
نویسندگان
1 دانش‌آموخته کارشناسی ارشد جنگلداری، دانشکده منابع طبیعی، دانشگاه گیلان، صومعه سرا، ایران.
2 گروه جنگلداری دانشکده منابع طبیعی دانشگاه گیلان
3 دانشکده منابع طبیعی، دانشگاه گیلان
4 دانش آموخته دکتری جنگلداری دانشکده منابع طبیعی دانشگاه گیلان
چکیده
کلیدواژه‌ها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
Several methods have been proposed to evaluate soil quality in line with its management and provide suitable management solutions. Visual assessment method of soil disturbance provides a quick and effective tool for cheap evaluation of the quality of the soil in the field. Visual evaluation method of soil degradation provides a quick and effective tool for cheap evaluation of soil quality in the field. Aim of study was to visually assessment of soil disturbance due to forest operation by short wood and full tree methods in western plantations of Guilan province. For this purpose, 625 plots were measured in each method based on visual soil assessment method. Results showed that the studied operation methods destroyed different proportions of field areas so that 79.36 and 69.92% of the total area were destroyed in the short wood and full tree methods, respectively. Logging residuals in short wood method was more than to full tree method. Results showed that soil compaction in short wood method (18.72%) was higher than full tree method (14.08%). Logging residuals, shallow disturbance and soil compaction were the most common types of soil disturbance cause by logging methods, so that the highest amount of disturbance in both methods was related to the logging residuals class. The results of U Mann-Whitney test showed that there was a significant difference between the two forest logging methods. In general, the results showed that the type of timber removal method in logging operations and skidding has a significant effect on forest soil disturbance.
کلیدواژه‌ها [English]
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