[Analysis of soil components along water channel of east route of South-to-North Water Diversion Project].

Objective: To explore the relationship between the soil components along the areas of the east route of the Southto-North Water Diversion Project and the survival situation of snails.

Methods: Four study sites were selected along the project, and soil samples were collected to analyze the components. The amounts of components among the different study sites were compared statistically.

Results: Except zinc, sodium, and phosphorus, the contents of the soil components where the snails survived were different from those where snails were dead ( = -19.150 to 12.810, all < 0.01). However, the logistic regression analysis did not obtain a model with statistical significance.

Conclusions: snails live in the soil with adequate organic matter and neutral pH value. Along with the global warming and the operation of the South-toNorth Water Diversion Project, snails may survive in the northern area, and therefore, the surveillance work should be strengthened.