内容简介
LY/T 3178-2020西北华北山地次生林经营技术规程
Technical Regulation of Secondary Forest Management in the mountain areas of Northwest and North China 2020 - 03 - 30 发布
2020-10 - 01 实施
目 次
前言....................................................................................................................................................................II
1 范围.............................................................................................................................................................. 1
2 规范性引用文件.......................................................................................................................................... 1
3 定义和术语.................................................................................................................................................. 1
3.1 天然林经营模式 Natural forest management models.............................................................. 1
3.2 林分经营 Stand-oriented management ........................................................................................... 1
3.3 林分拥挤程度 Stand crowded degree.......................................................................................... 1
3.4 幼树开敞度 The open degree of saplings.............................................................................. 1
3.5 单株木经营 Tree-oriented management......................................................................................... 2
3.6 针叶树为主的针阔混交林 Coniferous and broad-leaved mixed forest with coniferous
dominated........................................................................................................................................................... 2
3.7 阔叶树为主的针阔混交林 Coniferous and broad-leaved mixed forest with broad-leaved
dominated........................................................................................................................................................... 2
3.8 针阔均衡的针阔混交林 Coniferous and broad-leaved mixed forest with on balance. 2
3.9 特大树 Very big trees................................................................................................................... 2
3.10 大树 Big trees................................................................................................................................ 2
3.11 小树 Small trees............................................................................................................................ 2
3.12 小径木林分 Forestry with small trees-dominated .................................................................. 2
3.13 大径木林分 Forestry with big trees-dominated...................................................................... 2
3.14 特大径木林分 Forestry with very big trees-dominated....................................................... 2
4 经营指标...................................................................................................................................................... 2
4.1 经营强度............................................................................................................................................... 2
4.2 林分拥挤度调整................................................................................................................................... 2
4.3 大树均匀性调整................................................................................................................................... 3
4.4 林分成层性调整................................................................................................................................... 3
4.5 幼树开敞度调整................................................................................................................................... 3
5 西北华北山地次生林经营模式.................................................................................................................. 3
5.1 天然针叶林经营模式........................................................................................................................... 3
5.2 天然阔叶林经营模式........................................................................................................................... 4
5.3 天然针阔混交林经营模式................................................................................................................... 6
参考文献............................................................................................................................................................ 9
本标准按照 GB/T 1.1-2009 给出的规则编写。
本标准由国家林业和草原局提出。
本标准由全国营造林标准化技术委员会（SAC/TC385）归口。