FOREST RESOURCES WANAGEMENT ›› 2022, Vol. 0 ›› Issue (1): 106-113.doi: 10.13466/j.cnki.lyzygl.2022.01.013
• Technical Application • Previous Articles Next Articles
ZHOU Xiangbei(), LI Chungan(), YU Zhu, CHEN Zhongchao, SU Kai
Received:
2021-12-08
Revised:
2021-12-22
Online:
2022-02-28
Published:
2022-03-31
Contact:
LI Chungan
E-mail:xiangbeizhou@st.gxu.edu.cn;gxali@126.com
CLC Number:
ZHOU Xiangbei, LI Chungan, YU Zhu, CHEN Zhongchao, SU Kai. Classification of Vertical Forest Structure of Overstory in Subtropical Forests Using Airborne Lidar Data[J]. FOREST RESOURCES WANAGEMENT, 2022, 0(1): 106-113.
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URL: http://www.lyzygl.com.cn/EN/10.13466/j.cnki.lyzygl.2022.01.013
Tab.2
Classification rules of vertical structure of overstory based on continuous vertical canopy profile
编号 | 分类规则 | 类型 | |
---|---|---|---|
A(1) | Null | UT1 | |
B(1a) | | OT1 | |
B(1b) | | T1T3 | |
B(2a) | (hp99/3< | OT1T2 | |
B(2b) | (hp99/3< | OT1 | |
B(2c) | (hp99/3< | T1T2T3 | |
B(2d) | (hp99/3< | UT1T2 | |
B(3a) | (3.0< | T1T2T3 | |
B(3b) | (3.0< | OT1T2 | |
B(3c) | (3.0< | UT1T2 | |
B(3d) | (3.0< | OT1 | |
B(3e) | (3.0< | OT1T2 | |
B(3f) | (3.0< | OT1 | |
B(3g) | (3.0< | UT1 | |
B(4a) | (1.0< | T1T2T3 | |
B(4b) | (1.0< | UT1T2 | |
B(4c) | (1.0< | UT1T2 | |
B(4d) | (1.0< | UT1 | |
B(4e) | (1.0≤ | UT1 | |
B(5a) | | UT1 | |
B(5b) | | UT1T2 | |
C(1a) | HPEAK1≥2/3 hp99 and HPEAK2≥hp99/3 and HUL2≥3.0 and(HLA1+HLA2)/HCS<0.65 | OT1 | |
C(1b) | HPEAK1≥2/3hp99 and HPEAK2≥hp99/3 and HUL2≥3.0 and(HLA1+HLA2)/HCS≥0.65 | OT1T2 | |
C(1c) | HPEAK1≥2/3hp99 and HPEAK2≥hp99/3 and HUL2<3.0 and hp99≥15.0 | T1T2T3 | |
C(1d) | HPEAK1≥2/3hp99 and HPEAK2≥hp99/3 and HUL2<3.0 and hp99<15.0 | UT1T2 | |
C(2a) | HPEAK1≥2/3hp99 and(3.0<HPEAK2≤hp99/3)and hp99≥15.0 and CMID<0.1 | T1T3 | |
C(2b) | HPEAK1≥2/3hp99 and(3.0<HPEAK2≤hp99/3)and hp99≥15.0 and CMID≥0.1 | T1T2T3 | |
C(2c) | HPEAK1≥2/3hp99 and(3.0<HPEAK2≤hp99/3)and hp99<15.0 | UT1T2 | |
C(3a) | HPEAK1≥2/3hp99 and(1.0≤HPEAK2<3.0)and hp99≥15.0 and HLA1/HCS<0.65 and HLA2/HCS<0.35 | OT1 | |
C(3b) | HPEAK1≥2/3hp99 and(1.0≤HPEAK2<3.0)and hp99≥15.0 and HLA1/HCS≥0.65 and HLA2/HCS<0.35 | OT1T2 | |
C(3c) | HPEAK1≥2/3hp99 and(1.0≤HPEAK2<3.0)and hp99≥15.0 and HLA1/HCS<0.65 and HLA2/HCS≥0.35 and(HLA1+HLA2)/HCS≥0.80 | T1T2T3 | |
C(3d) | HPEAK1≥2/3hp99 and(1.0≤HPEAK2<3.0)and hp99≥15.0 and HLA1/HCS<0.65 and HLA2/HCS≥0.35 and(HLA1+HLA2)/HCS<0.80 | T1T3 | |
C(3e) | HPEAK1≥2/3hp99 and(1.0≤HPEAK2<3.0)and hp99<15.0 and HLA1/HCS≥0.65 | UT1T2 | |
C(3f) | HPEAK1≥2/3hp99 and(1.0≤HPEAK2<3.0)and hp99<15.0 and HLA1/HCS<0.65 and HUL2<hp99/3 | UT1 | |
C(3g) | HPEAK1≥2/3hp99 and(1.0≤HPEAK2<3.0)and hp99<15.0 and HLA1/HCS<0.65 and HUL2≥hp99/3 | OT1 | |
C(4a) | (hp99/3≤HPEAK1<2/3hp99)and hp99≥15.0 and(HLA1+HLA2)/HCS≥0.8 | T1T2T3 | |
C(4b) | (hp99/3≤HPEAK1<2/3hp99)and hp99≥15.0 and(HLA1+HLA2)/HCS<0.8 and HUL2<hp99/3 | UT1T2 | |
C(4c) | (hp99/3≤HPEAK1<2/3hp99)and hp99≥15.0 and(HLA1+HLA2)/HCS<0.8 and HUL2≥hp99/3 | OT1T2 | |
C(4d) | (hp99/3≤HPEAK1<2/3hp99)and hp99<15.0 and(HLA1+HLA2)/HCS<0.65 and HUL2<hp99/3 | UT1 | |
C(4e) | (hp99/3≤HPEAK1<2/3hp99)and hp99<15.0 and(HLA1+HLA2)/HCS<0.65 and HUL2≥hp99/3 | OT1 | |
C(4f) | (hp99/3≤HPEAK1<2/3hp99)and hp99<15.0 and(HLA1+HLA2)/HCS≥0.65 and HUL2<hp99/3 | UT1T2 | |
C(4g) | (hp99/3≤HPEAK1<2/3hp99)and hp99<15.0 and(HLA1+HLA2)/HCS≥0.65 and HUL2≥hp99/3 | OT1T2 | |
D(1a) | HPEAK3≥3.0 and(HLA1+HLA2+HLA3)/HCS≥0.80 | T1T2T3 | |
D(1b) | HPEAK3≥3.0 and(HLA1+HLA2+HLA3)/HCS<0.80 | OT1T2 | |
D(2a) | HPEAK3<3.0 and(HLA1+HLA2+HLA3)/HCS≥0.80 | T1T2T3 | |
D(2b) | HPEAK3<3.0 and(HLA1+HLA2+HLA3)/HCS<0.80 | OT1T2 |
Tab.3
Confusion matrix of classification of vertical canopy structure
类型 | 真实值 | 总数 | 用户精度/% | |||||
---|---|---|---|---|---|---|---|---|
(1)UT1 | (2)OT1 | (3)UT1T2 | (4)OT1T2 | (5)T1T3 | (6)T1T2 T3 | |||
(1)UT1 | 190 | 0 | 1 | 0 | 0 | 0 | 191 | 99.5 |
(2)OT1 | 5 | 534 | 0 | 2 | 0 | 2 | 543 | 98.3 |
(3)UT1T2 | 9 | 0 | 67 | 6 | 1 | 1 | 84 | 79.8 |
(4)OT1T2 | 17 | 5 | 6 | 164 | 1 | 0 | 193 | 85.0 |
(5)T1T3 | 0 | 3 | 0 | 0 | 21 | 1 | 25 | 84.0 |
(6)T1T2 T3 | 1 | 1 | 5 | 1 | 2 | 101 | 111 | 91.0 |
总数 | 222 | 543 | 79 | 173 | 25 | 105 | 1147 | |
生产者精度/% | 85.6 | 98.3 | 84.8 | 94.8 | 84.0 | 96.2 |
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