setwd('D:/ZW/zwwww')

########loading package

library(mgcv);library(nlme);library(lme4)

library(FD);library(vegan);library(psych)

library(plyr);library(dplyr);library(tidyr)

library(reshape2);library(codyn);library(ggplot2)

library(xtable);library(piecewiseSEM);library(MuMIn)

library(mice)

##################### Set ggplot2 theme##############################

theme_set(theme_bw())

theme_update( panel.grid.major=element_blank(), panel.grid.minor=element_blank(),

              strip.background = element_blank())