FIGURE 6 PAL activity of A. trifoliata in different habitats
It can be seen from Figure 7 that the 4CL activity of roots, stems and leaves in rocky desertification habitat of Guanling base was higher than that in normal habitat, and the difference first increases and then decreases, and the difference was the largest in August, with the increase of 1.23 times in roots, 1.19 times in stems and 1.30 times in leaves; In Huaxi base, the activity of 4CL in roots, stems and leaves in rocky desertification habitat was higher than that in normal habitat, and different parts showed different trends, but the difference of roots, stems and leaves was the largest in April, increased by 1.35 times, 1.29 times and 1.24 times respectively. In conclusion, A. trifoliata could significantly increase 4CL activity in roots, stems and leaves in rocky desertification habitat.