Biological community including carabids and spiders were investigated in 30 various fields margins and 10 related fields by pitfall trap in Quzhou area of North China Plain.It was concluded that biodiversity index and...Biological community including carabids and spiders were investigated in 30 various fields margins and 10 related fields by pitfall trap in Quzhou area of North China Plain.It was concluded that biodiversity index and numbers of biological groups in field margins are higher than those in the related crop fields.There is a given relationship between the attributes of field margins and biodiversity.The control of structure and vegetation in field margins would be the possible way to protect natural enemy such as carabides and spiders.展开更多
In 2000,the species and diversity of carabids beetle were investigated by pitfall trap in 14 land-use treatments of Dongbeiwang agroecosystem in Beijing.The treatments included woodlots,field margins,wheat/corn fields...In 2000,the species and diversity of carabids beetle were investigated by pitfall trap in 14 land-use treatments of Dongbeiwang agroecosystem in Beijing.The treatments included woodlots,field margins,wheat/corn fields and vegetable fields with different cultivation measures.Analysis of variance (ANOVA) showed that the irragation,fertilization and straws have no effect on the diversity of carabid community;the number of species and individual number of carabid community in the woodlots,field margins were higher than these in the fields;the field margins had positive effect on the diversity and richness of carabid community in their adjacent field;moderation disturbance was beneficial for higher individual number of carabid community.It is concluded that field margin are necessary to maintain a diverse predatory carabid community in agroecosystem.展开更多
文摘Biological community including carabids and spiders were investigated in 30 various fields margins and 10 related fields by pitfall trap in Quzhou area of North China Plain.It was concluded that biodiversity index and numbers of biological groups in field margins are higher than those in the related crop fields.There is a given relationship between the attributes of field margins and biodiversity.The control of structure and vegetation in field margins would be the possible way to protect natural enemy such as carabides and spiders.
文摘In 2000,the species and diversity of carabids beetle were investigated by pitfall trap in 14 land-use treatments of Dongbeiwang agroecosystem in Beijing.The treatments included woodlots,field margins,wheat/corn fields and vegetable fields with different cultivation measures.Analysis of variance (ANOVA) showed that the irragation,fertilization and straws have no effect on the diversity of carabid community;the number of species and individual number of carabid community in the woodlots,field margins were higher than these in the fields;the field margins had positive effect on the diversity and richness of carabid community in their adjacent field;moderation disturbance was beneficial for higher individual number of carabid community.It is concluded that field margin are necessary to maintain a diverse predatory carabid community in agroecosystem.
