Fig. 1.

Study area and segments (1 Shihaoxian, 2 Hadawan, 3 Shaokou, 4 Baiqi, 5 Chaoyang, 6 Songhuajiang Village, 7 Wujiazhan, 8 Fuyu, 9 Ganshuigang, 10 Zhaoyuan)

Study area and segments (1 Shihaoxian, 2 Hadawan, 3 Shaokou, 4 Baiqi, 5 Chaoyang, 6 Songhuajiang Village, 7 Wujiazhan, 8 Fuyu, 9 Ganshuigang, 10 Zhaoyuan)