放牧干扰下的蝗虫－植物相互作用关系

本文研究了内蒙古典型草原植物和蝗虫群落在不同放牧强度影响下的多样性、均匀性和丰盛度变化。比较了蝗虫群落与植物群落在放牧梯度上的相互作用关系。研究发现，放牧干扰活动会明显地影响植物和蝗虫群落结构，但蝗虫群落结构的变化趋势并非与植物完全同步。蝗早与植物间的联系列多地表现在植物起着蝗虫栖息地条件的作用，而并不完全是食料植物作用。文中对放牧实践与多样性保护的关系进行了讨论。

GRASSHOPPER-PLANT INTERACTIONS UNDER DIFFERENT GRAZING INTENSITIES IN INNER MONGOLIA

rasshopper population had been monitored for two years on the different grazing pas-tures of natural steppes in Inner Mongolia,and correlated with floral biomass in these pas-tures. Grasshopper and plant sampling were conducted in three types of vegetation sites. Eachsite was divided into five plots as : ungrazed, lightly grazed, properly grazed, heavily grazedand overgrazed plots along grazing gradients, based on different grazing intensities, Abun-dance and diversity of plant and grasshopper communities...