摘要
湿地生态系统的氮素输入过程主要包括大气氮沉降、生物固氮、人为氮和径流氮输入等途径,它们通过影响湿地系统自身的营养状况而决定氮素生物地球化学过程的运行。综述国内外湿地氮素各种输入途径的研究进展,分析当前研究中存在的问题,指出淡水沼泽湿地是目前研究的薄弱点。展望湿地氮素输入过程的研究前景,建议积极开展淡水沼泽湿地、湿地系统氮素交换的环境效应1、5N技术与氮素模型的结合以及各氮素输入途径的模型表征研究。
The nitrogen input process of wetland ecolcgy system mainly includes atmospheric nitrogen deposition, biological nitrogen fixation and nitrogen input caused by human activities and runoff, etc. They decide the progress of nitrogen biogeochemical process by affecting the nutrition status of wetland system. This paper firstly summarizes the advance in the research on each nitrogen input approach. Then it analyzes the issues existed in current research, and points that, in particular, the study of freshwater mire wetland is very weak. Finally, it forecasts the prosperous study of the nitrogen input process, and points that, we should have the study of freshwater mire wetland, the environmental effects of nitrogen exchanging, the integration of 15^N technique and nitrogen model and the model token of each nitrogen input approach actively other than strengthen the current research.
出处
《地理与地理信息科学》
CSCD
北大核心
2006年第1期97-102,共6页
Geography and Geo-Information Science
基金
中国科学院知识创新工程重要方向项目(KZCX3-SW-332)
国家自然科学基金项目(90211003)
中国科学院知识创新工程重大资助项目(KZCX1-SW-01)
关键词
氮沉降
生物固氮
15^N技术
湿地生态系统
nitrogen deposition
biological nitrogen fixation
15^ N technique
wetland ecology system