福建农林大学学报（自然科学版）2011，Vol.40Issue(1)：1-7,7.
多作对稻田蜘蛛功能团结构及多样性的影响
Effects of polycultural manipulation on the structure and diversity of spider guild in rice-based ecosystems
摘要
Abstract
To explore responses of spider guild to polycultural manipulation in rice-based ecosystems, experiments were carried out during the growing season of early rice in 2006. Spiders were sampled by suction sampler in the fields, and examined by microscope for identification and classification in the indoor labs at the Wuyishan Experimental Station of Agro-biodiversity and Ecologicallybased Pest Management, Institute of Applied Ecology ( IAE), Fujian Agriculture and Forestry University (FAFU). The polyculturalmanipulation was arranged in mosaic patterns of paddy plots intercropped with non-paddy plots ( chili pepper, eggplant, maize and weed). The plots were separated by planting soybeans on ridges. Monocultural paddy fields were set as controls. The results showed that the structure and composition of spider guild were almost similar between the two cropping systems, where the two unidentified species in Theridiidae and Tetragnathidae were the dominant species. Species richness (S), species abundance (N), ShannonWiener's index (H'), Simpson's index ( D' ), Pielou's evenness index (E) and You's absolute abundance（ ń) were significantly different at some sampling dates, however, overall indices were not significantly different between the two cropping systems. AN0SIM also indicated that the guild structures were similar, and SIMPER revealed that the two unidentified species in Theridiidae and Tetragnathidae, Tetragnatha maxillosa , Oedothorax insecticeps , Coleosoma octomaculatum , Gnathonarimu giberum and Lycosa spp.were all characteristic species respectively contributing with more than 5％ of overall average dissimilarity of spider guild between the two cropping systems. In summary, the polycultural manipulation didn't effectively optimize the structure of spider guild and increase its diversity.关键词
生境配置/捕食性天敌/多样性指数/多元分析Key words
habitat arrangement/ predatory arthropod/ diversity index/ multivariate analysis分类
农业科技引用本文复制引用
林胜,陈李林,尤民生,杨广,刘丰静..多作对稻田蜘蛛功能团结构及多样性的影响[J].福建农林大学学报（自然科学版）,2011,40(1):1-7,7.基金项目
国家"973"项目(2006CB100204) （2006CB100204）
国家科技支撑计划(2008BADA5B01) （2008BADA5B01）
国家自然科学基金项目(30570309、30871649). （30570309、30871649）
