湖北林业科技

This article explores the chemical characteristics of soil pH, total nitrogen, total phosphorus, total potassium, available nitrogen, available phosphorus, available potassium, and organic matter under three types of schistosomiasis control forests: Liquidambar formosana, Populus, Carya illinoinensis,. It also examines their impact on the distribution of Oncomelania snails. By analyzing changes in various chemical indicators such as soil pH, total nitrogen, total phosphorus, total potassium, available nitrogen, available phosphorus, available potassium, and organic matter in the set schistosomiasis control forest plots and control plots from 2020 to 2023, as well as the correlation between soil chemical properties such as total nitrogen, total phosphorus, total potassium, available nitrogen, available phosphorus, available potassium, organic matter, and pH value and the distribution of Oncomelania snails, it is concluded that except for the pH value in the control plots being lower than that in the schistosomiasis control forest plots, other indicators such as total nitrogen, total phosphorus, total potassium, available nitrogen, available phosphorus, and organic matter are at their highest or relatively high values. This indicates that the construction of schistosomiasis control forests significantly utilizes the nutrients in the floodplain and generally reduces soil chemical indicators. The lowest values of total phosphorus, available phosphorus from 2020 to 2023, and available potassium from 2020 to 2022 are all found in Liquidambar formosana, suggesting that sweet gum has the most significant effect on reducing total phosphorus, available phosphorus, and available potassium. Meanwhile, the soil chemical indicator that is directly and positively correlated withoncomelania snail distribution and has the highest significance level is total potassium, followed by available potassium. The construction of schistosomiasis control forests in the floodplain has caused significant changes in many biological and abiotic factors, which is the fundamental reason for the formation of soil chemical characteristics and the main reason for the reduction in Oncomelania snail density. This has certain theoretical guidance and practical reference value for forestry schistosomiasis control research and engineering construction.