东祁连山高寒草地土壤有机质与物种多样性的关系  

Study on the relationship between soil organic matter content and plant species diversity of alpine meadow in Eastern Qilian Mountains

作　　者：高超[1] 张德罡[1] 潘多锋[2] 蒲小鹏[1] 陈建刚[1] 

机构地区：[1]甘肃农业大学草业学院,甘肃兰州730070 [2]黑龙江省农业科学院草业研究所,黑龙江哈尔滨150086

出　　处：《草原与草坪》2007年第6期18-21,共4页Grassland and Turf

基　　金：国际原子能机构项目"提高作物-家畜系统生产能力(CPR/5/014)"资助

摘　　要：对不同退化程度草地土壤有机质与物种多样性的关系进行了研究,结果表明:退化草地土壤有机碳,腐殖质和胡敏酸(HA)含量与各种多样性指数间均为正相关,富里酸(FA)与各指数呈负相关,其中,有机碳与Shannon-Wiener指数、腐殖质与Simpson指数显著相关(P<0.05)。腐殖质与Simpson指数的回归方程为:y=0.228 3x+1.649 3(R2=0.848)。Analyses were carried out to test the relationship between soil organic matter and diversity of plant species in different degraded alpine grassland types. The results show that soil organic carbon, humus and HA correlated positively with diversity index, the relation between FA and every index correlated negatively.The correlation relationship between soil organic carbon and Shannon-Wiener index was significant, and the same as humus and Simpson index （P=0.05）. The correlation between Humus and diversity index was more significant than the others. The regression equation is as follows：y=0. 228 3 x＋1. 649 3（R^2 =0.484）.

关 键 词：退化草地 有机质 腐殖质 物种多样性 相关性分析 

分 类 号：S812.3[农业科学—草业科学]