黑龙江凉水自然保护区人工林土壤革螨生态分布

对黑龙江凉水国家自然保护区人工云冷杉林、人工兴安落叶松林、人工红松林三个群落的土壤革螨进行调查分析,获得土壤革螨24种,216只。其中优势种2个,常见种11个,稀有种11个。人工红松林土壤革螨种类和数量最多,人工云冷杉林的次之,人工兴安落叶松林的最少。平均密度为2400个m-2。土壤革螨栖息层次的表聚性很强,组成成分以人工云冷杉林和人工红松林的相似性最大。文中采用多个群落D IC指数、丰富度指数、均匀度指数、优势度指数进行分析。土壤革螨的多样性与丰富度呈正相关,与优势度呈负相关。

The Ecological Distribution of Soil Gamasida in the Plantation in the Liangshui Nature Reserve of Heilongjiang

In this paper the authors investigated and analysed soil gamasida of Picea and Abies plantation,Larix gmelini plantation and Pinus koraiensis plantation in the Liangshui Nature Reserve in Heilongjiang.The numbers of soil gamasida are 216 that belong to 24 species.There are 2 dominant species,11 common species and 11 rare species.The species and numbers of Soil gamasida are the largest in the Pinus koraiensis plantation and they are the second in the Picea and Abies plantation and the least in the Larix gmelini plantation.The average density of soil gamasida is 2400/m~2.Soil gamasida is visibly centralized in the surface of soil and its component of Picea and Abies plantation is most similar to that of Pinus koraiensis plantation.We adopt DIC index,abundance index,evenness index and dominance index when the analysis is conducted.The diversity and abundance of soil gamasida are positive correlation,but the diversity and dominance are negative correlation.