水曲柳人工林密度调控与修枝技术模式

由于早期水曲柳人工林的粗放经营，培育技术落后，导致现有水曲柳林分存在林木过早分叉、干材形质及木材材质不良等问题。因此为合理调整林分结构，提高水曲柳林生产力，本研究以4种造林密度：株行距分别为1 m×1 m（10000 株/hm²）、1.5 m×1.5 m（4444 株/hm²）、2 m×2 m（2500 株/hm²）、3 m×1.5 m（2222 株/hm²）和1种混交模式（水曲柳-落叶松带状混交，密度2 m×2 m（2500 株/hm²））为研究对象，通过测定林分平均胸径、径阶分布，胸径、树高和材积的连年生长量和平均生长量，探讨适合培育水曲柳优质大径材的的最佳密度。

Due to extensive management and backward cultivation techniques in early-stage planted Fraxinus mandshurica plantations, the existing stands suffer from issues such as premature tree branching, poor stem form and substandard wood quality. To reasonably adjust stand structure and improve the productivity of Fraxinus mandshurica stands, this study took four planting densities and one mixed planting pattern as research objects. The four planting densities are: 1 m × 1 m (10000 trees/hm²), 1.5 m × 1.5 m (4444 trees/hm²), 2 m × 2 m (2500 trees/hm²), and 3 m × 1.5 m (2222 trees/hm²); the mixed pattern is strip mixed plantation of Fraxinus mandshurica and Larix gmelinii, with a density of 2 m × 2 m (2500 trees/hm²). By measuring the stand mean diameter at breast height (DBH), diameter class distribution, as well as the current annual increment (CAI) and mean annual increment (MAI) of DBH, tree height and timber volume, this study aims to explore the optimal density for cultivating high-quality large-diameter timber of Fraxinus mandshurica.

搜集汇总

背景与挑战

背景概述

该数据集聚焦水曲柳人工林的密度调控与修枝技术，通过不同造林密度和混交模式的实验，旨在优化林分结构，提高水曲柳林生产力，为培育优质大径材提供科学依据。