Repeated measures analysis of variance results for the soil moisture content in the four J. virginiana treatments among different measurement dates (Sep. 2018, Nov. 2018, Jan. 2019, May 2019, and Aug. 2019).

JUVI = J. virginiana only, QUST = J. virginiana growing with Q. stellata, BRIN = J. virginiana growing with B. inermis, and QUST+BRIN = J. virginiana growing with both Q. stellata and B. inermis.JUVI组仅包含北美圆柏（J. virginiana）；QUST组为与星花栎（Q. stellata）伴生的北美圆柏样地；BRIN组为与B. inermis伴生的北美圆柏样地；QUST+BRIN组为同时与Q. stellata和B. inermis伴生的北美圆柏样地。