怀化外来林业有害生物调查分析

摘要

指出了外来林业有害生物现已严重破坏了我国森林生态系统和生物多样性，给林业造成了较大的经济损失。从怀化已发现的25种外来林业有害生物着手，对其生态特征及危害进行了调查分析。%The Exotic and harmful forest pests have severe damaged China＇s forest ecosystems and biodiver sity,and brought tremendous economic losses to the forestry. To date,25 species of exotic and harmful for est pests have been found in Huaihua City.