首页|火烧和垦殖对黔南喀斯特土壤跳虫的影响

火烧和垦殖对黔南喀斯特土壤跳虫的影响

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[目的]明确喀斯特地区不同干扰形式对土壤跳虫群落组成和多样性的影响,为深入认识干扰引起的生态退化提供科学资料.[方法]于2016年10月、2017年1月和4月在黔南选取火烧迹地、农田和火烧后经济林分别代表火烧、农业活动和火烧后垦殖3种干扰形式,以马尾松人工林为对照(CK),利用干漏斗(Tullgren)法调查土壤跳虫.[结果]共获得土壤跳虫1 836头,优势类群为等节跳科(Isotomidae)和棘跳科(Onychiuridae).主成分分析(Principal component analysis,PCA)结果显示,火烧迹地、农田和火烧后经济林土壤跳虫群落组成与马尾松人工林存在差异.火烧迹地、农田和火烧后经济林土壤跳虫类群数和Shannon-Wiener指数(H')显著低于马尾松人工林(P＜0.05),马尾松人工林秋季和冬季土壤跳虫Shannon-Wiener指数(H')显著高于春季(P＜0.05),其余类群数、密度和Shannon-Wiener指数(H')无显著季节差异.土壤跳虫类群数、密度和Shannon-Wiener指数(H')与全钾显著正相关(P＜0.05),密度与有效钾显著正相关(P＜0.05).冗余分析(Redundancy analysis,RDA)结果表明,有效钾是影响土壤跳虫分布的主要土壤因子.[结论]火烧、农业活动和火烧后垦殖能改变土壤跳虫群落组成,降低土壤跳虫多样性.
The effect of burning vegetation and land reclamation on soil collembola in southern Guizhou
[Aim]To assess the effects of burning vegetation and land reclamation practices on the soil collembola community composition and diversity in a Karst district,and thereby assess the degree of ecological degradation of this community resulting from such disturbance.[Methods]A burned area(representing fire disturbance),farmland(representing agricultural activity),a post-fire commercial forest(representing post-fire reclamation)and a Pinus massoniana plantation(control)were chosen as study sites in southern Guizhou province.The soil collembola communities of each site were investigated using the Tullgren method in October 2016 and in January and April 2017.[Results]A total of 1 836 individual soil collembola were collected.The dominant families were the Isotomidae and Onychiuridae which comprised 79.63％of the total.Principal component analysis(PCA)indicates that soil collembolan community composition in the P.massoniana plantation differed significantly from that in the disturbed sites.The richness and Shannon-Wiener index(H')of soil collembola in the P.massoniana plantation were significantly higher than in the burned area,farmland or post-fire commercial forest(P＜0.05).The Shannon-Wiener index(H)of the P.massoniana plantation was significantly greater in autumn and winter than in spring(P＜0.05).Richness,density and Shannon-Wiener index(H)were significantly and positively correlated with TK(P＜0.05),and there was also a significant positive correlation between the density of soil collembola and AK(P＜0.05).Redundancy analysis(RDA)indicated that AK significantly affected the distribution of the soil collembolan community.[Conclusion]Burning,agriculture and post-fire reclamation decreased the richness and diversity of soil collembola in southern Guizhou.

Karstsoil collembolandisturbanceburningreclamation

董逸夕、叶婷、曹宇、李灿、杨大星

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贵阳学院生物与环境工程学院,贵州省山地珍稀动物与经济昆虫重点实验室,贵州省山地生物资源保护与高效利用工程中心,贵阳 550005

喀斯特 土壤跳虫 干扰 火烧 垦殖

国家自然科学基金项目贵州省高层次创新型人才培养计划项目贵州省一流学科建设项目贵阳学院生态学学科建设项目贵州省教育厅创新群体项目贵阳市科技局支持贵阳学院专项经费研究生教育项目研究生课题

31760130黔科合人才20164020号黔教科研发[2017]85号黔教合KY字[2021]013号GYKJ-GUY[2021]2021-xk06GYU-YJS[2021]-76

2024

10.7679/j.issn.2095-1353.2024.037

应用昆虫学报
中国昆虫学会 中国科学院动物研究所

应用昆虫学报

CSTPCD北大核心
影响因子：0.679
ISSN：0452-8255
年,卷(期)：2024.61(2)
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