三江平原农田地表和地下土壤螨类丰富度与环境因子的空间关联性  

Spatial relationships between the abundance of aboveground and belowground soil mite communities,and environmental factors in a farmland on the Sanjiang Plain,China

作　　者：高梅香[1,2,3] 刘冬[3] 张雪萍[1,2] 吴东辉[3] 

机构地区：[1]地理科学学院哈尔滨师范大学,哈尔滨150025 [2]黑龙江省高校地理环境与遥感监测重点实验室哈尔滨师范大学,哈尔滨150025 [3]湿地生态与环境重点实验室中国科学院东北地理与农业生态研究所,长春130102

出　　处：《生态学报》2016年第6期1782-1792,共11页Acta Ecologica Sinica

基　　金：国家自然科学基金资助项目(41101049;41471037;41371072;41430857);滨师范大学青年学术骨干资助计划项目(KGB201204);中国科学院东北地理与农业生态研究所优秀青年基金(DLSYQ2012004)

摘　　要：地表和地下土壤动物群落空间格局及其与环境因子的空间作用关系,是揭示地表-地下生态系统格局与过程及生物多样性维持机制的重要基础。于2011年在三江平原农田生态系统,在50m×50m的空间尺度内,基于地统计空间分析方法,揭示地表和地下土壤螨群落及不同螨类物种丰富度的空间格局,并分析这种空间格局与土壤含水量、土壤p H值及大豆株高空间格局的空间关联性。半方差函数和普通克里格插值表明,8月份地表、地下和10月份地下螨群落及这些群落内大部分螨类物种在特定空间尺度内形成集群,表现为空间异质性特征,且这种空间分异多由结构性因素或结构性因素和随机性因素共同调控。交叉方差函数表明,土壤螨群落和不同螨类物种的空间格局与环境因子的空间格局在多种尺度上表现出复杂的空间关联性(正的或负的)。但简单Mantel检验仅发现8月份地表中气门亚目未定种1(Mesostigmata unidentified sp.1)和大豆株高存在明显的正的空间关联性。研究结果表明地下螨群落和生长季节的地表螨群落具有明显的空间异质性结构,地表和地下螨群落及大多数螨类物种丰富度与土壤含水量、土壤p H值及大豆株高的空间关联性并不显著。促进地表-地下生态系统土壤动物群落空间格局研究,为地表-地下格局与过程研究奠定基础。Spatial patterns of aboveground and belowground soil animal communities and their spatial correlations with environmental factors are important foundations for revealing spatial patterns and processes of aboveground and belowground ecosystems and mechanisms for maintaining biodiversity. However, the spatial relationships between soil animal communities and environmental factors in aboveground and belowground ecosystems are still not clear,especially in smallscales. This study investigated the spatial distribution patterns of aboveground and belowground soil mite communities,for recognizing the spatial relationships between soil mite communities and environmental factors in a farmland planted with soybean in Sanjiang Plain,Northeast China. Aboveground and belowground soil mite communities were sampled at 100 uniformly distributed points in a 50 × 50 m2 plot and environmental factor analyses performed at each point in August and October,2011. Spatial distribution patterns and relationships were analyzed using geostatistical tools with semivariogram,crossvariogram and ordinary kriging. Simple Mantel test was selected to evaluate those spatial correlations between soil mite communities and environmental factors and to determine whether the spatial relationships were true or spurious. According to the results of semivariograms,aboveground and belowground soil mite communities in August,belowground soil mite community in October and most of the soil mite species from those communities showed clumped distributions from 5- 40 m scales,revealing exponential,spherical or Gaussian models. Moreover,based on the analysis of ordinary kriging,obviously spatial structures were detected,and spatial heterogeneities were common characteristics of those communities and soil mite species from those communities above mentioned. The values of（ C0/ C0＋ C） demonstrated that the spatial differentiations of those soil mite communities and soil mite species above mentioned mainly controlled by structured factors or both structured an

关 键 词：空间关联性 地表和地下土壤螨群落 农田 三江平原 

分 类 号：S154[农业科学—土壤学]