fairly significantp < 0.1
For the cropland site, a fairly significant negative partial correlation was observed for EWUE with solar radiation (– 0.451, p < 0.1; Table 5 ).
For the cropland site, a fairly significant negative partial correlation was observed for EWUE with solar radiation (– 0.451, p < 0.1; Table 5 ).
1 a, Table S4 ) but continued to exhibit a negative trend.
An increasing trend for IWUE was observed for the effect of CO 2 concentration (E2-E1) at all three (forest, grassland, and cropland) sites (5.228, 2.058, and 6.726 gC m −2 kPa mm −1 year −1 , respectively).
It caused by abnormal behavior of aerosol concentration at the grassland site [which showed a decreasing trend in EWUE (Fig. 1 b, E3–E1) and an increasing trend in TWUE (Fig. 2 b, E3–E1)] and reduces the negative trend in TWUE for all factors (E5) in the second period compared with the first (Fig. 2 b).