Cd在中华稻蝗体内的分布  

Distribution of Cadmium in Oxya chinensis

作　　者：李丽君[1] 席玉英[2] 张峰[1] 马恩波[1] 

机构地区：[1]山西大学生命科学与技术学院 [2]山西大学环境科学与资源学院,山西太原030006

出　　处：《农业环境科学学报》2004年第2期246-249,共4页Journal of Agro-Environment Science

基　　金：国家自然科学基金项目30170612;山西省科技厅项目(012015)

摘　　要：中华稻蝗属于非迁飞性蝗虫,尤其喜食水稻。当水稻生长环境Cd污染严重时,Cd将富集于蝗虫体内。中华稻蝗不同体段对Cd的富集程度不同,在雌性头、胸、腹、后足的富集浓度分别为0.323,0.343,0.486及0.306mg·kg-1,各体段富集Cd能力大小的顺序为腹>胸>头>后足;在雄性头、胸、腹、后足的富集浓度分别为0.509,0.437,0.738,0.356mg·kg-1,分布状况为腹>头>胸>后足;Duncan的多重比较显示,Cd在中华稻蝗腹部的富集量与在头、胸、后足的富集量差异显著,而头、胸、后足间的富集量差异不显著;Cd在不同性别中华稻蝗腹部的富集量差异显著,但在头、胸、后足中的富集量差异不显著。由于中华稻蝗对Cd有富集作用,因此,可利用中华稻蝗作为Cd的环境污染指示生物,对稻田及周围环境重金属污染进行监测,快速、准确地反映环境中重金属Cd污染状况。Oxya chinensis, characterized by no migratory feature, is commonly and frequently found in rice paddy, sugar cane and other crop fields. A survey was conducted to reveal distribution of heavy metal cadmium in the insect. It has been found that when environment had been polluted by cadmium, the heavy metal was steadily accumulated in the body of O.chinensis. The result from our survey showed that the concentrations of cadmium were different in each part of O.chinensis body. The distribution of cadmium in both female and male adult bodies was 0.323, 0.343, 0.486 and 0.306 mg· kg- 1, 0.323,0.343,0.486 0.306 mg· kg- 1, respectively. And the order of the concentrations for the pollutants was: abdomen > thorax > head > hind femur and abdomen > head > thorax > hind femur, respectively. The concentrations of cadmium were significant different between abdomen and head, abdomen and thorax, abdomen and hind femur. In addition, a significant difference for cadmium was found in the abdomen between female and male. As the insect was very susceptible to cadmium in soil, it may be suggested that the species be used as an indicator organism for cadmium pollution in soil. Therefore, it will correctly be known how the soil was polluted by cadmium, providing some measures to reduce the pollution.

关 键 词：CD 中华稻蝗 农业生态环境 富集程度 重金属污染 

分 类 号：X503.223[环境科学与工程—环境工程]