混交毛竹林植物多样性与枯梢病感病指数的关系  

The relationship between species diversity of mixed bamboo stands and the disease index of Ceratosphaeria phyllostachydis Zhang

作　　者：谢菲 梁军[1,2] XIE Fei;LIANG Jun(Research Insistude of Forest Ecology,Environment and Protection,Chinese Academy of Forestry,Beijing China;Key laboratory of Forest Protection of State Forestry Administration,Beijing 100091,China)

机构地区：[1]中国林业科学研究院森林生态环境与保护研究所,北京100091 [2]国家林业局森林保护重点实验室,北京100091

出　　处：《湖南农业大学学报（自然科学版）》2018年第5期520-523,共4页Journal of Hunan Agricultural University(Natural Sciences)

基　　金：国家自然科学基金面上项目(31270682)

摘　　要：调查了江西省竹–针混交林、竹–阔混交林、毛竹纯林3种毛竹林的植物多样性和毛竹枯梢病的病情,分析毛竹林乔木层、灌木层和草本层的植物多样性指数与枯梢病感病指数的关系。结果表明:竹–针混交林感病指数为6.321±1.530,枯梢病为害最严重;毛竹纯林感病指数为4.460±1.903,受害最小;竹–阔混交林乔木层和灌木层的丰富度指数(S)、香浓威纳指数(H)和辛普森指数(D)最高,毛竹纯林乔木层和灌木层的植物多样性指数最低,毛竹纯林草本层的多样性指数最高,竹–针混交林草本层的最低;竹–阔混交林和竹–针混交林乔木层的植物多样性指数均与感病指数呈极显著负相关,毛竹纯林乔木层的的植物多样性指数与感病指数呈正相关;竹–阔混交林灌木层的辛普森指数和香浓指数、毛竹纯林的丰富度指数与感病指数呈极显著负相关,竹–针混交林灌木层的丰富度指数与病情指数呈显著负相关;竹–阔混交林和毛竹纯林草本层的植物多样性指数与感病指数均呈正相关,竹–针混交林草本层的植物多样性指数与感病指数呈负相关。The relationship between the species diversity of the bamboo mixed stands with conifer, bamboo mixed stands with hardwood and the pure bamboo stands and the disease index of Ceratosphaeria phyllostachydis Zhang in Jiangxi province were investigated and analyzed. The result showed that the bamboo mixed stands with conifer was the most seriously damaged by Ceratosphaeria phyllostachydis Zhang, with disease index 6.321±1.530, while the pure bamboo stands showed the minimum damage, with disease index 4.460±1.903.The species richness index （S）, Shannon–Weiner index （H） and Simpson index （D） were the highest in tree layer and shrub layer of bamboo mixed stands with hardwood, while in the pure bamboo stands the plant diversity was the lowest. Diversity in herbage layer of pure bamboo stands was the highest while in bamboo mixed stands with conifer was the lowest. There was a very high significant negative correlation between plant diversity and disease index in tree layer of bamboo mixed stands with hardwood and bamboo mixed stands with conifer, while there was a positive correlation between plant diversity and disease index in tree layer of pure bamboo stands. In shrub layer, D and H in bamboo mixed stands with hardwood and S in pure bamboo stands showed very high significant negative correlation with the disease index; S in bamboo mixed stands with conifer showed significant negative correlation with the disease index. Plant diversity in herbage layer of bamboo mixed stands with hardwood and pure bamboo stands exhibited positive correlation with the disease index while in bamboo mixed stands with conifer exhibited negative correlation.

关 键 词：混交毛竹林 毛竹枯梢病 感病指数 植物多样性 江西 

分 类 号：S795[农业科学—林木遗传育种]