1 材料与方法
1.1 研究区概况
1.2 数据来源
表1 各市县样木分布情况 |
| 树种 Tree species | 径级 Diameter class/cm | 乐东县 Ledong | 保亭县 Baoting | 昌江县 Changjiang | 三亚市 Sanya | 陵水县 Lingshui | 白沙县 Baisha | 儋州市 Danzhou |
|---|---|---|---|---|---|---|---|---|
| 马占相思 Acacia mangium | 5~10 | 2 | 2 | 2 | 2 | 2 | 2 | 2 |
| 11~15 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | |
| 16~20 | 4 | 3 | 3 | 3 | 3 | 3 | 3 | |
| 21~25 | 4 | 3 | 3 | 4 | 3 | 3 | 3 | |
| 26~30 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | |
| >30 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | |
| 橡胶树 Hevea brasiliensis | 5~10 | 2 | 2 | 2 | 2 | 2 | 2 | 2 |
| 11~15 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | |
| 16~20 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | |
| 21~25 | 3 | 4 | 3 | 3 | 3 | 3 | 3 | |
| 26~30 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | |
| >30 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | |
| 桉树 Eucalyptus spp. | 5~10 | 2 | 2 | 2 | 2 | 2 | 2 | 2 |
| 11~15 | 5 | 4 | 2 | 2 | 2 | 2 | 2 | |
| 16~20 | 6 | 3 | 6 | 3 | 3 | 3 | 3 | |
| 21~25 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | |
| 26~30 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | |
| >30 | 2 | 2 | 2 | 2 | 2 | 2 | 2 |
