Analysis and evaluation of the effect of afforestation and greening construction on snail control and schistosomiasis prevention and control in the beach along the river in Zhenjiang City
Objective To investigate the effect of afforestation on snail control and schistosomiasis control in beaches along the river in Dantu District of Zhenjiang City,and to provide scientific basis for the comprehensive control of schistosomiasis in Zhenjiang City.Methods A total of 4 environments in 2 townships in Dantu District of Zhenjiang City were selected as monitoring points.By collecting historical data,the snail situation,disease condition,wild mice and environmental wild manure infection were investigated from 2021 to 2023.The changes of snail situation,human and wild animal infection before and after afforestation were compared,and the effect of afforestation and greening construction on snail control and disease prevention on both sides of the Yangtze River was evaluated.The rates between the two groups were compared by SPSS 20.0 software and Chi-square test.P＜0.05 was considered to be statistically significant.Results A total of 4 737 frames of snails were examined in the four environments,and the density of living snails was between 0.17-0.94/0.1 m2,with no schistosome infected snails.The density of living snails decreased by more than 50％in the first year after afforestation.Except for the marshland from Dongnanwan to Xiaxin Luguansuo(x2=3.76,P=0.053),the occurrence rates of living snail frames in the other three environments in the first year after afforestation was significantly lower than those in the first year before afforestation(all P＜0.05).The positive rate of human blood test was 1.19％.No schistosoma fecal test positive patients were found.A total of 26 wild rats were captured,and no schistosoma infected rats.A total of 92 portions of wild feces were found,no schistosoma positive wild feces.Conclusions The afforestation and green construction of the beach had obvious short-term snail inhibition effect.It is suggested to strengthen the standardized management of forest land environment and the monitoring and control of snail situation,so as to better play the long-term snail inhibition effect of the beach forest land.
万方数据
维普
