不同坡位柳杉人工林夏季土壤动物群落特征

发布时间：2018-05-21 21:33

本文选题：土壤生物学 + 柳杉人工林　；参考：《浙江农林大学学报》2016年02期

【摘要】：为研究柳杉Cryptomeria fortunei人工林不同坡位土壤动物群落结构特征,采用手捡法和干湿漏斗法在四川盆周西缘山地3个不同坡位(海拔分别为1 088 m,987 m和830 m)的柳杉人工林设置样地(分别为样地Ⅰ,样地Ⅱ和样地Ⅲ)进行土壤动物群落调查。结果显示:试验所采集到的土壤动物平均密度为3.46×104只·m-2,隶属于5门13纲94类,其中,土壤动物密度和类群数均以样地Ⅲ最高,分别为6.53×104只·m-2和66类,以样地Ⅰ最低,分别为1.35×104只·m-2和38类,土壤动物密度和类群数呈现出随坡位高度增加而减少的趋势;从垂直分布来看,各土层土壤动物密度均随着坡位的上升而减少,各样地有大于43%的土壤动物个体分布在0~5 cm土层(凋落物层除外),有大于72%的土壤动物类群分布在凋落物层;除Simpson优势度指数(C)外,土壤动物多样性指数均以样地Ⅲ最高,同时,各样地间土壤动物群落Sorenson相似性系数较Morisita-Horn相似性系数波动更大,表明坡位对柳杉人工林下土壤动物群落各类群的相对数量影响较类群数的影响大。
[Abstract]:In order to study the structure characteristics of soil animal community in different slope positions of Cryptomeria Cryptomeria fortunei plantation, the soil animal communities were set up by hand picking method and dry wet funnel method at 3 different slope positions (1088 m, 987 m and 830 m respectively) in the western margin of Sichuan basin. The results showed that the average density of soil animals collected by the experiment was 3.46 x 104. M-2, belonging to 5 doors 13 classes and 94 classes. Among them, the soil animal density and group number were the highest, 6.53 x 104, m-2 and 66 respectively, with the lowest samples, 1.35 x 104 m-2 and 38 respectively, and the soil animal density and group number presented As the height of the slope increased, the soil animal density in each soil layer decreased with the elevation of the slope, and there were more than 43% of the soil animals in the 0~5 cm soil layer (except for the litter layer), and more than 72% of the soil animal groups were distributed in the litter layer; except for the Simpson dominance index (C), the soil animals were distributed in the litter layer. The diversity index of soil fauna was the highest, and the similarity coefficient of Sorenson in various soil animal communities fluctuated greater than that of Morisita-Horn, indicating that the relative influence of slope position on the relative number of various groups of soil animal communities under Cryptomeria Plantation was larger than that of the group number.
【作者单位】：四川农业大学都江堰校区;四川农业大学生态林业研究所;阿坝藏族羌族自治州旅游经济研究所;
【基金】：国家自然科学基金青年科学基金资助项目(31400457) 四川省教育厅资助项目(13ZA0258) 四川省景观与游憩研究中心资助项目(JGYQ2015012)
【分类号】：S714.3

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