摘要
通过大量查阅资料，对欧洲开展的有关农田生态系统中物种多样性研究进行综述。目前已经获得的研究结果表明农业活动导致的景观结构和生境条件的变化是影响该生态系统中物种多样性的重要因素，由农田施肥导致的土壤氮素含量的增加，对欧洲中部７０％以上的植物物种的生存具有不利影响。鉴于农田生态系统的这种作用，应有在农田生态系统中建立廊道状和岛状保护性景观结构。
Based on study reports and publications,this paper examines the research progress on biodiversity of the agricultural ecosystems in the European countries.Results from recent researches showed that the changes in landscape structure and ecological factors in the habitats exert obvious impacts on species richness in the agricultural ecosystem.The increase of the soil nitrogen content through the nitrogenous fertilization plays a negative role on the distribution of more than 70% of vascular plant species in the Central Europe.It is thus necessary to construct the corridor and island landscape elements within the agricultural ecosystem to conserve biodiversity.
出处
《资源科学》
CSCD
北大核心
1999年第5期53-56,共4页
Resources Science
基金
国家重点基础研究培植项目
国家自然科学基金
