我国林业外来有害生物入侵现状及防控对策(国外英文资料).docVIP

我国林业外来有害生物入侵现状及防控对策 Foreign forestry harmful biological invasion in China present situation and the prevention and control countermeasures Do you want to print file is: foreign forestry harmful biological invasion in China present situation and the prevention and control countermeasures to print the paper The present situation and prevention and control countermeasures of the harmful biological invasion of forestry in China Author: wu jian reposted: wu jian number: 135 The total amount of forest resources in our country is very low, and the accumulations are low, the ratio of artificial pure forest is large, and the distribution of resources is unevenly distributed. The forest coverage rate is 16.55 percent, and the per capita forest area and storage capacity are only 0.12 hectares and 8.6 cubic meters, compared with 21 percent and 12 percent of the worlds population. But severe, the forest diseases and insect pests occurrence in China have found more than 8000 kinds of forest disease and insect pest, there are 5020 kinds of insect pests, disease 2918 species, 160 kinds of rats and mice, and the disaster caused by more than 100 kinds of forest disease and insect pest. Since 1999, the government of China has been working on the project management of forest pests and pests that are the most serious and harmful to the forest. We should fully recognize the important role of foreign harmful organisms in Chinas forestry and ecological development In recent years, the work of forestry in China has been highly valued by the central committee and the attention of the society. According to statistics, in the first half of 2003 alone, the country completed the afforestation area of 78m mu, which laid a good foundation for the leap-forward development of forestry. However, with the enlargement of the area of forest resources, all kinds of artificial or natural factors is becoming more and more serious damage to forest resources, protect ecological construction achievements of d