汾河流域中下游湿地植被优势种种间关联性分析  

Interspecific association of dominant species of wetland vegetation in the middle and lower reaches of Fenhe River,Shanxi province of China

作　　者：王慧敏[1] 庞春花[1] 张峰[2] 赵彩莉[1] 

机构地区：[1]山西师范大学生命科学学院,山西临汾041004 [2]山西大学生命科学学院,太原030006

出　　处：《生态学杂志》2012年第10期2507-2512,共6页Chinese Journal of Ecology

基　　金：山西省软科学研究项目(2011011031-1);山西省留学基金项目(20100012);山西师范大学自然科学基金项目(SMYKZ-9)资助

摘　　要：采用χ2检验、Pearson相关系数及Spearman秩相关系数检验等数量分析方法对汾河流域中下游湿地植被的34个优势种,共561个种对间的关联性进行定量研究。结果表明:χ2检验有178个种对呈正相关,256个种对呈负相关,正负关联比为0.70;Pearson相关系数检验有157个种对呈正相关,402个种对呈负相关,正负关联比为0.39;Spearman秩相关系数检验有216个种对呈正相关,343个种对呈负相关,正负关联比为0.63;与χ2检验和Pearson相关系数相比,Spearman秩相关系数检验具有较高的灵敏度。561个种对中负关联居多,达到极显著或显著的种对少,说明汾河流域中下游湿地植被群落处于演替初期。根据这34个优势种群对环境的适应方式和主导生态因素辅助以PCA排序,可将它们划分为4种生态种组。By using χ^2test, Pearson’s correlation coefficient, and Spearman’s rank correlation coefficient, a quantitative study was made on the interspecific association among the 561 species pairs of 34 dominant plant species of wetland vegetation in the middle and lower reaches of Fenhe River. The χ^2test showed that among the 561 species pairs, 178 pairs were positively while 256 pairs were negatively correlated, and the correlation ratio was 0.70. Pearson’s correlation coefficient test showed that 157 pairs were positively while 402 pairs were negatively correlated, and the correlation ratio was 0.39. Spearman’s rank correlation coefficient test showed that 216 pairs were positively while 343 pairs were negatively correlated, and the correlation ratio was 0.63. As compared with χ^2 test and Pearson’s correlation coefficient, Spearman’s rank correlation coefficient was more sensitive. Most of the total 561 species pairs did not show significant association. The results indicated that the wetland vegetation in the middle and lower reaches of Fenhe River was at the early stage of succession. According to the adaptation to the environment and the leading ecological factors, the 34 dominant species were divided into four ecological species groups.

关 键 词：汾河 湿地植被 种间关联 生态种组 

分 类 号：Q948[生物学—植物学]