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机构地区:[1]福建农林大学植物保护学院,福建福州350002
出 处:《福建农林大学学报(自然科学版)》2006年第4期359-364,共6页Journal of Fujian Agriculture and Forestry University:Natural Science Edition
基 金:福建省自然科学基金(B9910015);福建农林大学青年教师科研基金(02B22)资助项目
摘 要:根据菜用大豆田节肢动物物种的组成和数量,按照营养和取食关系,将群落划分为害虫类、捕食类、寄生类和中性类亚群落,采用群落分析的多个参数比较分析了群落的结构特征.在菜用大豆田共查出节肢动物116种,分属于59科.春种和秋种菜用大豆田各亚群落的相对丰盛度分别为:害虫类(0.7018)>捕食类(0.1641)>中性类(0.0923)>寄生类(0.0418),害虫类(0.9586)>捕食类(0.0164)>寄生类(0.0145)>中性类(0.0104).各亚群落的优势集中性分别为:中性类(0.4392)>捕食类(0.1547)>寄生类(0.1468)>害虫类(0.1310),害虫类(0.8388)>寄生类(0.6878)>捕食类(0.4452)>中性类(0.2852).各亚群落的多样性分别为:害虫类(3.3957)>捕食类(3.2822)>寄生类(3.1842)>中性类(1.9607),中性类(2.3116)>寄生类(2.1081)>捕食类(1.1338)>害虫类(0.5940).各亚群落的均匀性分别为:寄生类(0.8363)>害虫类(0.7088)>捕食类(0.7068)>中性类(0.5298),中性类(0.6071)>捕食类(0.4540)>寄生类(0.3278)>害虫类(0.1264).秋种菜用大豆田多样性指数和均匀性指数较低,优势集中性较高,害虫大发生的可能性较大.The arthropod community was divided into four sub-communities: pests, predators, parasitoids and neutralities by the standard of nutrition and hunting. The structures of arthropod community and different sub-communities were analyzed by using a number of community parameters. The results indicated that there were 116 species of arthropods belonging to 59 families jtt vegetable soybean field. The relative abundance of four sub-communities was pests (0. 7018 ) 〉 predators ( 0. 1641 ) 〉 neutralitics (0.0923) 〉 parasitoids (0.0418) and pests (0.9586) 〉 predators (0.0164) 〉 parasitoids (0.0145) 〉 neutralities (0.0104), respectively in two development season. The dominant concentration of four sub-communities was neutralities (0.4392) 〉 predators (0.1547) 〉parasitoids (0.1468) 〉 pests (0.1310) and pests (0.8388) 〉 parasitoids (0.6878) 〉predators (0.4452) 〉neutralities (0.2852), respectively. The diversity index of four sub-communities was pests ( 3. 3957 ) 〉 predators ( 3. 2822 ) 〉 parasitoids (3.1842) 〉 neutralities(1.9607) and neutralities (2.3116) 〉 parasitoids (2.1081 ) :〉 predators ( 1.1338) 〉 pests (0.5940), evenness index of four sub-communities showed parasitoids ( 0.8363 ) 〉 pests ( 0. 7088 ) 〉 predators (0. 7068 ) 〉 neutralities ( 0.5298 ) and neutralities (0.6071 ) 〉 predators ( 0.4540 ) 〉 parasitoids ( 0.3278 ) 〉 pests ( 0.1264), respectively. The results indicated that the diversity and evenness index of arthropod community and four sub-communities was low, while the dominant concentration was high in fall sowing season. This suggested that the pest outbreak was more possible in fall season than that in spring season.
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