Investigation Of Bi River Pollution's Effects On Rural Residents Living Along The River

ObjectiveTo understand the general situation of the rural residents living along the Brive,and to study the effects of Bi River pollution-related on drinking water agricultural production, health and so on,to provide some scientific measures for the relevant deparment to control Briver pollution and lighten contamination effect,reduce health hazards.MethodsThis was a cross section investigation. The Bi River was divided into upstream, midstream and downstream according to polluted status and village distribution along the river. The target people who living among 1 000 meters along the river from upstream, midstream and downstream. One person from one household was investigated using the questionnaire. Other methods included deep-interview and observation method.Results1) 52.5% male and 47.5% female among the residents primarily is Bai and married people, the age of most people ranged from 18-55years old;most are in primary school,the living life primarily in 20 years and above, family income per year in 5000～10000 yuan;main income is planning. 2)99.4% of investigated farmers regarded source of pollution as mine exploitation, and from the upstream to the midstream and the downstream more and more people thought that rubbish, feces and sewage were also the sources of pollution (P＜0.05). There were 76.0% of farmers reporting that pollution caused the less production of rice and vegetables,6.9% of farmland abandoned and 24% of farmers had to change water field into dry field. The rural residents living along the river had drinking water from other source and 97.6% of investigated farmers said pollution affected their irrigation water. There was more farmland abandoned and water field changed into dry field in the upstream than that of in the midstream and downstream (P＜0.05), but there was less effect to irrigation water in the upstream than that of in the midstream and the downstream (P＜0.05)3) Two-week prevalence rate was 28.0%, higher than that of the rural in the fourth national health services survey (P＜0.05); The rate of chronic diseases was 29.9% higher than that of the rural in the fourth national health services survey (P＜0.05)Conclusion1) Bi-river pollution have constrained the overwhelming majority of the number of residents along the B-river from keeping water source,agricultural production and so on;2) The overwhelming majority resident possibly has the heavy metal to store up to harm health, because irrigation water's lacking, they still use the Bi-river water to irrigate;3) The overwhelming majority resident recognized because of upstreamlead-zinc mining exploitation the Bi-river was polluted, and they understand the pollution through personal experience.