应用生态学报2017，Vol.28Issue(9)：3023-3031,9.DOI:10.13287/j.1001-9332.201709.007
河流微生境异质性与大型底栖动物空间分布的关系
Relationship of river microhabitat heterogeneity and macroinvertebrate spatial distribution
摘要
Abstract
As a good indicator,macroinvertebrates are widely adopted in the assessment of river ecological status.Macroinvertebrate distribution is affected by factors of macro-,meso-or micro-scale.The previous research on relationship of macroinvertebrate and habitat factors mainly focused on the meso-scale.Based on surveys of macroinvertebrates and microhabitat factors at a 10 m reach,the spatial distribution characteristics of macroinvertebrates and its relationship with microhabitat heterogeneity were analyzed here to obtain the following results.1) Macroinvertebrate density,biomass,richness and Shannon index varied with habitat types.The Shannon index values of riffle,pool and run were 2,1.9,and 1.78,respectively.2) Spatial autocorrelation existed among the density,biomass,richness index and Shannon index of macroinvertebrate.3) There were differences in the relationships between microhabitat factors and macroinvertebrate spatial distribution.The fitting degree of flow depth,as well as velocity,and the macrobenthos was weak,while the fitting relationship between composition of sediment and macrobenthos was relatively good.Results demonstrated a positive correlation between macroinvertebrate density and the volume percen-tage of substrate with particle size ＜4 mm.The biomass,richness index and Shannon index showed a positive spatial correlation with the volume percentage of substrate with particle size ＞ 32 mm.The results of this study could provide references for diffusion mechanism research on macroinvertebrates,sample settings and physical habitat restorations.关键词
大型底栖动物/河流微生境/异质性/地统计学Key words
macroinvertebrate/river microhabitat/heterogeneity/geostatistics引用本文复制引用
张海萍,张宇航,马凯,余杨,渠晓东..河流微生境异质性与大型底栖动物空间分布的关系[J].应用生态学报,2017,28(9):3023-3031,9.基金项目
本文由国家自然科学基金项目(41501204,51479219)和中国水利水电科学研究院基本科研业务费项目(WE0145B062016)资助 （41501204,51479219）
This work was supported by the National Natural Science Foundation of China (41501204,51479219) and the Research & Development Support Program of China Institute of Water Resource and Hydropower Research (WE0145B062016). （41501204,51479219）
