宁夏宁南山区红庄林场甘肃鼢鼠分布密度与危害研究

Density of Distribution and Harm of Gansu Zoker in the Hongzhuang Tree Farm of Ninan Mountain Area

通过对红庄林场不同立地条件随机抽样调查，结果表明：山间谷地甘肃鼢鼠平均密度为33只/hm^2；草甸山坡甘肃鼢鼠平均密度为13．3只／hm^2；林地甘肃鼢鼠平均密度为6．3只／hm^2。由于鼢鼠破坏活动，幼林受害率轻者为10％～20％，重者达到70％-80％。鼢鼠危害已制约当地造林工程的发展。

The Gansu zokor density was surveyed in Hongzhuang of Ningxia Province by random sampling. The result showed that its average density was 33/hm^2 in valley, 13.3/hm^2 in hillside and 6.3/hm^2 in woodland. As a result of zokor demolition, damage rate of young forest was 10 % -20 % and some achieved 70 % -80 %. The zokor harm has restricted the local development of afforestation project.