Abstract The climate of southern area is muggy and wet.It is apt to multiply chironomid larva, which is the polluted insect in the system of supplying water of the city.

摘 要 南方地区气候适宜摇蚊幼虫孳生，其繁殖迅速，受力较强，经常污染城市供系统，且很难通过与氯接触。

The relationship between the species,number of oribatid mites and the level of plumbum pollution was explored in this study.

对土壤中甲螨孳生的种群数量与土壤铅污染之间的相互关系进行探讨。