宝天曼栎类天然林物种多样性与稳定性  

Species diversity and stability of a natural Quercus forest in Baotianman,Henan Province

作　　者：闫东锋[1] 朱滢[1] 杨喜田[1] 

机构地区：[1]河南农业大学林学院,河南郑州450002

出　　处：《浙江农林大学学报》2011年第4期628-633,共6页Journal of Zhejiang A&F University

基　　金：国家自然科学基金资助项目(30872019)

摘　　要：利用河南省宝天曼国家级自然保护区32块样地资料,通过划分不同的群落类型,利用Simpson指数(D),Shannon-Wiener指数(H)和Pielou指数(R)等3个物种多样性指数及改进的M-Godron稳定性测定方法分别对该区物种多样性和群落稳定性进行测度,研究了栎类Quercus天然林群落物种多样性和稳定性的耦合相关关系。结果表明:群落A,群落B,群落C和群落D的稳定性数值分别为0.084 6,0.239 4,0.291 7和6.456 6,除群落D处于不稳定状态,其他3个群落类型均处于稳定状态,且稳定值差别不大;所有植物Simpson指数、Shannon-Wiener指数和Pielou指数与群落稳定性数值之间相关系数分别为0.998 3,0.968 0和0.999 7。以95%的置信概率检验结果表明,两者存在着显著的正相关关系,即植物群落的物种多样性越高,结构越复杂,稳定性就越强。To measure and study the values and relationships between community diversity and stability of four communities（A,B,C,and D） in a natural Quercus（oak） forest,data from thirty-two sample plots of the Baotianman Nature Reserve in Henan Province were obtained and analyzed according to three diversity indexes： the Simpson index（D）,the Shannon-Wiener index（H）,and the Pielou index（R） as well as a community stability index：the improved M-Godron method.A correlation analysis of the three diversity indexes to the community stability values（SV） was also conducted.Results showed that communities A（SV=0.084 6）,B（SV=0.239 4）,and C（SV=0.291 7） were stable,but community D（SV=6.456 6） was unstable.Correlation coefficients for community stability versus species diversity [D（r=0.998 3）,H（r=0.968 0）,and R（r=0.999 7）] were significant（P0.05）.Thus,with more species diversity forest structure is more complex and stability is better.

关 键 词：森林生态学 改进M-Godron法 群落稳定性 物种多样性 天然次生林群落 宝天曼国家级自然保护区 

分 类 号：S718.5[农业科学—林学]