Estimated coefficients and confidence limits for parameters in the chosen negative binomial regression model (model 1 in the S3 Table).

L95 and U95 represent the lower and upper 95% confidence limits, respectively, estimated via block bootstrapping. Site 5 was the reference site; thus, it does not appear as a parameter in the model.L95 与 U95 分别代表通过块自助法（block bootstrapping）估算得到的95%置信下限与95%置信上限。位点5为参考位点，因此未在模型中作为参数出现。