摘要
为明确昆嵛山不同植被带线蚓分布特征及影响因子,于2011年9月对山东省昆嵛山不同植被带线蚓群落结构进行调查。共采集线蚓科环带动物351条,隶属4属10种,其中白线蚓属5种,半线蚓属2种,线蚓属2种,玛利安蚓属1种。叉肾半线蚓(Hemienchytraeus bifurcatus)、白线蚓属种5(Fridericia sp5)和滇池白线蚓(Fridericia dianchiensis)为优势种,平均密度分别为2 458、2 125和1 333条·m-2,相对丰度分别为16.5%、14.2%和8.9%。不同植被带线蚓密度和生物多样性整体表现为针阔叶混交林区最大,阔叶林区次之,针叶林区和农田区较小;其中线蚓密度均值为14 917条·m-2,Shannon-Wiener多样性指数均值为0.92,Margalef多样性指数均值为0.22,物种丰富度指数均值为4,Simpson优势度指数均值为0.52;应用非度量多维标度排序法研究群落结构相似性,发现S1和S2站位相似性较高,S5和S6站位相似性较高,S3、S4站位分别与其他站位群落结构存在较大差异。典范对应分析表明土壤水分、总氮和硝态氮含量为影响区域线蚓群落结构的主要因子。
To understand distribution of Enchytraeids in various vegetation zones and its affecting factors, field investiga- tions were carried out of Enchytraeid community structure relative to vegetation in Kunyu Mountain in September 2011. A total of 351 individuals of clitellates belonging to 4 genera and 10 species were collected. Among them were five species of Fridericia sp., two species of Hemienchytraeus sp., two species of Enchytraeus sp. and one species of Marionina sp., and Hemienchytraeus bifurcates, Fridericia sp5 and Fridericia dianchiensis were dominate species, whose density was 2 458, 2 125 and 1 333 ind ~ m-2 and relative abundance 16. 5%, 14.2% and 8.9%, respectively. One-Way ANOVA analysis was used to compare different vegetation zones in earthworm density and biodiversity. Results show that mixed forest was the highest in both and followed by broadleaf forest, and coniferous forest and farmland areas were lower. Their means of density, Shannon-Wiener biodiversity, Margalef biodiversity, richness, and Simpson dominant index was 14 917 ind·m-2, 0. 92, 0. 22, 4 and 0. 52, respectively. Non-matric muhidimentional scaling （NMS） ordination was used to explore similarity of Enchytraeid communities between different sites. Results show that Stations SI and S2 were very similar, and Stations S5 and S6 were also very similar in community structure, while Stations $3 and $4 were quite different from each other and from the other stations. Canonical correspondence analysis （CCA） indicates that the correlation between species and environmental variables reached up to 96. 2%, which suggests that soil water content, total nitrogen and nitrate nitro- gen are the major factors affecting structure of the Enchytraeid community.
出处
《生态与农村环境学报》
CAS
CSCD
北大核心
2014年第1期44-49,共6页
Journal of Ecology and Rural Environment
基金
国家自然科学基金(31100388)
山东省自然科学基金(ZR2010CL004
ZR2011CQ012)
枣庄市科技攻关项目(201024-1)
关键词
线蚓
昆嵛山
生物多样性
群落相似性
典范对应分析
Enchytraeid
Kunyu Mountain
biodiversity
community similarity
canonical correspondence analysis （CCA）
