DB21/T 3212-2019 胡桃楸优树选择技术规程

ICS65.020.20

B60

DB21

辽宁省地方标准

DB21/T3212—2019

胡桃楸优树选择技术规程

2019-12-20发布2020-01-20实施

辽宁省市场监督管理局发布

DB21/T3212—2019

目次

目次..........................................................................................................................................................I

前言........................................................................................................................................................II

1范围....................................................................................................................................1

2规范性引用文件.................................................................................................................1

3术语和定义.........................................................................................................................1

3.1......................................................................................................................................................1

3.2......................................................................................................................................................1

3.3......................................................................................................................................................1

3.4......................................................................................................................................................1

3.5......................................................................................................................................................1

3.6......................................................................................................................................................2

4选优林分条件.....................................................................................................................2

4.1在未经人为破坏的天然林或者经过严格择伐的近天然林中进行，远离林缘、沟塘、伐木

道或者较大林窗。............................................................................................................................2

5优树选择条件.....................................................................................................................2

5.1初选优树树龄在30a以上。...................................................................................................2

5.3胸径≥30cm，树高≥15m，树冠直径（冠幅）6m～10m，胸径年均生长量≥0.25cm。

...........................................................................................................................................................2

6优树选择程序.....................................................................................................................2

6.1制定方案...................................................................................................................................2

6.2初选...........................................................................................................................................2

6.3实测...........................................................................................................................................2

7档案建立.............................................................................................................................3

7.1内业整理...................................................................................................................................3

7.2档案内容...................................................................................................................................3

附录A.......................................................................................................................................4

附录B.....................................................................................................................................