贵州大水洞和马狼洞内动物群落结构与部分环境因子的相关性研究

2008年8月对贵阳市的大水洞和贵定县的马狼洞内动物进行了调查,共获动物标本3314号,其中大水洞1467号,隶属3门7纲11目20科26种(或类群);马狼洞1847号,隶属4门9纲16目35科55种(或类群)。两洞内由6个动物群落组成,经群落多样性分析,物种丰富度指数、群落多样性指数、均匀度指数和优势度指数最高的分别是群落D(6.4811)、群落B(2.6364)、群落E(0.8793)和群落D(0.5420)。通过对群落多样性与部分环境因子的相关性分析,结果显示群落最大多样性指数与湿度和氮气均呈显著负相关,相关系数为-0.857和-0.998,与磷呈显著正相关,相关系数为0.832;优势度指数与磷呈显著正相关,相关系数为0.833;CO2与物种数、物种丰富度、群落最大多样性指数和优势度指数均呈负相关,相关系数分别为-0.552、-0.070、-0.570和-0.510,其相关性虽然都未达到显著以上水平,但说明对物种和群落多样性有负面影响,可以说是影响群落多样性变化的主流因子之一。

Correlation between the animal community structure and environmental factors in Dashui cave and Malang cave of Guizhou Province

Cave animals were observed and collected in Dashui cave of Guiyang City and Malang cave of Guiding County on August 2008.3314 samples were collected,belonging to 3 phyla,7 classes,11 orders,20 families and 26 groups in Dashui cave and 4 phyla,9 classes,16 orders,35 families and 55 groups in Malang cave. There were 6 animal communities in Dashui cave and Malang cave. According to the analysis of community diversity,the communities with the highest values of species richness ,community diversity ,evenness and dominance were D(6.4811),B(2.6364),E(0.8793) and D(0.5420)respectively.Through analyzing the relativity between community diversity and environmental factors ,the results showed that the biggest diversity of community had significant negative correlation with humidity (-0.857)and N2(-0.998),and significant positive correlation with P(0.832). Dominance index had significant positive correlation with P(0.833). Species,species richness,the biggest diversity of community index and dominance index had negative correlation with CO2,which were -0.552,-0.070,-0.570 and -0.510 respectively.Although their values of correlation did not meet significant standards,CO2 had negative effects on species and community diversity.Therefore,CO2 was one of the primary factors that influence change of animal community diversity in two caves.