title: [Effect of project of afforestation for schistosomiasis prevention on snail control in marshland and lake regions].
abstract: OBJECTIVE
  To evaluate the effect of the project of afforestation for schistosomiasis prevention on Oncomelania hupensis control.
  
  
  METHODS
  The situation of afforestation for schistosomiasis prevention in the field and the snail distribution in marshland regions were surveyed with the systematic sampling method in the spring, 2009. The database of snail distribution was established and the status of afforestation was investigated, and the effect of the project on snail control was evaluated.
  
  
  RESULTS
  The rates of frames with living snails in the environment with plantations and the environment without a plantation were 14.9% and 19.7%, respectively, and there was a significant difference (Chi2 = 2 267, P < 0.01). The rate of frames with living snails in agroforestry model was lower than that in other models except for fishery-husbandry-forestry model. The average densities of living snails in the environment with plantations and the environment without a plantation were 0.552 snails/0.1 m2 and 0. 989 snails/0.1 m2, respectively. The average densities of living snails in the cultivating group and un-cultivating group were 0.354 snails/0.1 m2 and 0.653 snails/0.1 m2, respectively. The rate of frames with living snails and the average density of living snails were the lowest in the environment of long-term afforestation.
  
  
  CONCLUSIONS
  The project of afforestation for schistosomiasis prevention has a good effect on snail control in Anhui Province. Long-term afforestation could stably maintain the effect on snail control.
authors.affiliation: Department of Pathologic Biology, Wannan Medical College, Wuhu 241000, China.
authors.forename: Yong
authors.initials: Y
authors.lastname: Huang
authors.forename: Shi-Qing
authors.initials: SQ
authors.lastname: Zhang
authors.forename: Jia-Chang
authors.initials: JC
authors.lastname: He
authors.forename: Zhi-Guoj
authors.initials: ZG
authors.lastname: Cao
authors.forename: Tian-Ping
authors.initials: TP
authors.lastname: Wang
authors.forename: Feng-Hua
authors.initials: FH
authors.lastname: Gao
authors.forename: Gong-Hua
authors.initials: GH
authors.lastname: Zhang
authors.forename: Da-Bing
authors.initials: DB
authors.lastname: Lv
mesh_terms: D000818:Animals; D002681:China / Q000453:epidemiology; D004197:Disease Reservoirs / Q000469:parasitology*; D016468:Forestry / Q000191:economics; D060106:Lakes / Q000469:parasitology*; D010571:Pest Control / Q000191:economics* / Q000379:methods*; D012552:Schistosomiasis / Q000191:economics / Q000453:epidemiology / Q000517:prevention & control*; D012621:Seasons; D012908:Snails / Q000254:growth & development*; D053833:Wetlands