固氮类植物的生态功能及其在生态修复中的应用  

The ecological functions of nitrogen -fixing plants and their applications in ecological restoration

作　　者：赵玉洁[1] 张宇清[1] 

机构地区：[1]北京林业大学水土保持学院,宁夏盐池荒漠生态系统定位研究站,北京100083

出　　处：《干旱区资源与环境》2012年第1期179-183,共5页Journal of Arid Land Resources and Environment

基　　金：“十一五”国家科技支撑项目“沙区人居环境安全保障与工程防沙技术研究（2006BAD26B03）”; 教育部博士点新教师基金课题“西北风沙区柠条林草带状复合系统根系生态位及水肥空间分异特征（200800221003）”资助

摘　　要：氮素循环对地球生命与物质循环系统有着不可替代的特殊作用,维护和重建退化生态系统的氮素循环成为生态修复目标的重要步骤之一。文中系统介绍了固氮类植物改善土壤理化性质、促进生态修复等方面的生态功能和相关研究成果,认为固氮类植物在生态修复中具有重要的生态作用,固氮植物的选用是植被恢复的重要技术途径。建议未来研究中,应该加强对陆地生态系统固氮过程的量化研究,确定影响共生固氮的主导因子和生态机制,从而为陆地系统的生态恢复提供更为可靠的理论依据。The nitrogen cycle which is an important step in ecological restoration processes take an irreplaceable special role in life and material circulation on earth and maintain and rebuild of degraded ecosystems. The article made a scientific review about the ecological functions of nitrogen - fixing plants and the success which they make on ameliorating the soil physical and chemical properties and promoting restoration of the ecosystems. At last the author draw the conclusion that nitrogen - fixing plants take a significant part in ecological restoration and .the full use of the nitrogen - fixing plants is an important way in vegetation recovery. In the future, more quantitative studies on nitrogen -fixing processes on terrestrial ecosystem are needed and the influential dominant factors and ecological mechanisms shall be made clear. Thus the reliable theoretical basis will be provided for the restoration in terrestrial ecosystems.

关 键 词：固氮类植物 生态修复 土壤结构 营养组成 植被丰富度 

分 类 号：Q948.1[生物学—植物学]