草地改良对土壤有机碳的影响——以福建省建瓯市牛坑龙草地生态系统试验站为例  

Effects of Grassland Amelioration on Soil Organic Carbon: Case Study in Jianou Niu Kenglong Grassland Ecosystem Experimental Station, Fujian Province

作　　者：朱连奇[1] 许立民[1] 

机构地区：[1]河南大学环境与规划学院,河南开封475001

出　　处：《河南大学学报（自然科学版）》2004年第2期64-68,共5页Journal of Henan University:Natural Science

基　　金：中国科学院地理科学与资源研究所知识创新工程领域前沿项目(CXIOG-E01-01);河南省自然科学基金项目(0311051700);河南省高校青年骨干教师资助项目

摘　　要：在分析影响土壤有机碳源/汇的主要因素的基础上,利用定位观测的方法,对福建省建瓯牛坑龙草地生态系统试验站中影响土壤碳循环的主要因子,如草被覆盖度、土壤侵蚀模数、土壤温度、土壤水分含量和土壤有机碳含量及密度等,在草地改良过程中的变化进行观测研究.探讨了草地改良对土壤有机碳影响的机理和规律,指出进行草地改良、增加植被覆盖度是提高土壤碳汇能力、减少土壤碳排放的关键.This paper is a study of affecting mechanism and principle of grassland amelioration on soil organic carbon, on the basis of physical geography factors affecting soil carbon source and sink, e.g., coverage of grassland, modulus of soil erosion, soil temperature, soil moisture, concentration and density of soil organic carbon by positional observation in Niu Kenglong grassland ecosystem experimental station, Jianou, Fujian province has revealled that grassland amelioration and increasing coverage of vegetation are the keys to increase the capacity of soil carbon sink and reduce emission of soil carbon.

关 键 词：草地改良 土壤有机碳 植被覆盖度 土壤侵蚀模数 土壤温度 

分 类 号：Q142.3[生物学—生态学]