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据不完全统计,目前我国有主要外来杂草107种、外来害虫32种、外来病原菌23种。这些外来生物的入侵给我国生态环境、生物多样性和社会经济造成巨大危害,仅对农林业造成的直接经济损失每年就高达574亿元。据中国履行生物多样性公约工作协调组负责人介绍,外来物种对我国的危害表现在多个方面。首先,外来入侵物种会造成严重的生态破坏和生物污染。大部分外来物种成功入侵后大
According to incomplete statistics, at present, there are 107 major types of exotic weeds, 32 exotic insect pests, and 23 foreign pathogenic bacteria. The invasion of these alien species has caused great harm to the ecological environment, biological diversity and social economy of our country. The direct economic loss caused to agriculture and forestry alone amounts to 57.4 billion yuan a year. According to the person in charge of the coordinating group for the implementation of the Convention on Biological Diversity in China, the damage caused by alien species to our country is manifested in many aspects. First, invasive alien species can cause serious ecological damage and biological contamination. Most of the alien species after the successful invasion