叶菜田节肢动物多样性系统调查与抽样技术研究  

Arthropod diversity in leafy vegetable field and sampling technology.

作　　者：侯有明[1] 庞雄飞[2] 梁广文[2] 尤民生[3] 

机构地区：[1]福建农业大学植保系博士后流动站,福州350002 [2]华南农业大学昆虫生态研究室,广州510642 [3]福建农业大学植保系,福州350002

出　　处：《应用生态学报》2000年第5期753-756,共4页Chinese Journal of Applied Ecology

基　　金：国家博士点基金资助项目!(960 50 1 );广东省自然科学基金资助项目!(980 1 35)

摘　　要：通过对以株和区组面积两种抽样单位 ,以随机取样和定点定株取样两种抽样方式下叶菜田节肢动物多样性测度的变异程度分析表明 ,在菜心田苗期以区组 (0 .11m2 )为抽样单位 ,定苗后生长期～成熟期以株为抽样单位 ,采用随机抽样方式所获得的调查结果变异程度较小 .在此基础上 ,通过对菜田节肢动物丰富度、多样性和均匀性等指标同样方数量间的关系分析表明 ,苗期、生长期、成熟期分别抽取 12、30、2 0个样方 ,可以达到各多样性测度相对稳定的程度 .据此 ,确立了菜心田节肢动物类群多样性的最佳抽样单位、抽样方式和抽样量 .Two sampling units (plant and quadrat) and two sampling methods (random and fixed) were adopted to compare the variation degree of the diversity of arthropod communities in different chinese cabbage fields. The results show that a lower variation degree was found when the random sampling method was adopted with quadrat (0.11m 2) as sampling unit at seedling stage and with plant as sampling unit from growing to mature stage.The community diversity was relatively steady,when the critical number of samples was more than 12 quatrats (0\^11m\+2) at seedling stage,30 plants in growing period,and 20 plants at mature stage.The optimum sampling unit,sampling method and sampling number of arthropod diversity in leafy vegetable field were also determined.

关 键 词：叶菜田 节肢动物 多样性 抽样技术 临界抽样量 

分 类 号：S436.3[农业科学—农业昆虫与害虫防治]