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东方田鼠(沼泽田鼠Microtus fortis Bijchner)是东北林区三大害鼠之一,是水源涵养林,低湿造林地中的优势种,有不规则数量大暴发的迹象,林木受害严重。林木鼠害的发生是森林生态系统平衡破
Microtus fortis Bijchner (Microtus fortis Bijchner) is one of the three major pests in the forest zone of northeastern China. It is a dominant species in water conservation forests and low-moisture afforestation lands with signs of large irregular outbreaks and serious damage to trees. The occurrence of forest rodent damage is the balance of forest ecosystem