FIGURE 7 4CL activity of A. trifoliata in different habitats
It can be seen from Figure 8 that in the Guanling base, the C4H activity in the roots, stems and leaves of the rocky desertification habitat first increased and then decreased compared with the normal habitat. The difference of roots was the biggest in August, increased by 1.21 times, stems was the biggest in September, increased by 1.30 times, leaves was the biggest in October, decreased by 0.93 times. In Huaxi base, the C4H activity in the roots of the rocky desertification habitat showed a trend of first increasing and then decreasing compared with the normal habitat. The difference was the largest in September, which increased by 1.23 times. The C4H activity of stems in rocky desertification habitats was lower than that in normal habitats. The difference was the largest in August, which decreased by 0.75 times, and the changes in leaves were more frequent. The difference was the largest in October, which decreased by 0.92 times. In conclusion, the C4H activity in roots ofA. trifoliata increased significantly in rocky desertification habitat, but there was no significant change in stems and leaves.