摘要
生物入侵对农田生态系统影响间接经济损失主要是肥沃土壤的维持、营养物质循环、废弃物同化功能、CO2吸收功能等农田生态系统公益性服务功能降低所造成的经济损失,间接经济损失的大小与农作物产量的下降成正比。以典型案例报道和相关政府部门统计资料为主要信息源,计算了2000年度生物入侵对农田生态系统影响间接经济损失。计算结果表明:生物入侵对农田生态系统造成的间接损失为153 5871亿元/a。其中,外来病虫害对农田生态系统造成的损失为55 0066亿元/a,占总损失的35 81%;外来杂草对农田生态系统造成的损失为45 2742亿元/a,占总损失的29 48%;外来鼠害对农田生态系统造成的损失为48 8814亿元/a,占总损失的31 83%;外来病虫害对果园生态系统造成的损失为4 4249亿元/a,占总损失的2 88%。
Indirect economic loss of biological invasion on crop-land ecosystem is mainly derived from the decrease of the public welfare functions of crop-land ecosystem, such as maintaining soil fertility, recycling of nutrients, disposing wastes, absorbing carbon dioxide. Indirect economic loss is in proportion to the decrease of the yield of crops in crop-land ecosystem. Based on the reports of typical case studies and statistic data from concerned government departments, the indirect economic loss of biological invasion on crop-land ecosystem in 2000 is calculated. Annual indirect economic loss is 15358.71 million yuan RMB, in which loss caused by alien plant diseases and insect pests is 5500.66 million yuan RMB, loss caused by alien weeds is 4527.42 million yuan RMB, loss caused by alien mice is 4888.14 million yuan RMB, loss caused by alien plant diseases and insect pests on orchard ecosystem is 442.49 million yuan RMB, comprising the total losses 35.81 percent, 29.48 percent, 31.83 percent and 2.88 percent respectively.
出处
《金陵科技学院学报》
2004年第3期32-35,共4页
Journal of Jinling Institute of Technology
基金
973项目(2002CB111405)
国家十五重大攻关项目(2001BA611B-06)
关键词
生物入侵
农田生态系统
间接经济损失
biological invasion
crop-land ecosystem
indirect economic loss
