提高红松更新和培育质量的研究

该项目以红松生态学特性及其在天然林中生长发育条件和过程进行研究， 并依与其它树种共存和演替关系为理论基础， 进行人工纯林、阔叶混交林对比实验， 剖析了红松更新、生长的内部机制， 找到了提高红松更新和培育质量的途径。通过几十年多学科的联合攻关， 建立固定标准地234块， 各类实验地150余公顷， 详细测定了5公顷天然红松林的群落结构， 解析红松成树1000余株， 红松幼林2000余株， 阔叶树2000余株。运用年龄结构动态与树木空间格局相结合的分析方法， 揭示了天然红松林是由各龄组斑块镶嵌形成的时空结构， 各龄组斑块在空间上构成一个周期性循环更替的动态过程。采用长期定位观测、干扰对比实验和群落结构解析等研究方法， 揭示了红松是林隙更新树种， 红松幼树进入上层林需要干扰所形成的林隙， 林隙动态是红松老龄林维持组成稳定、物种多样性和自我发展的重要机理。天然红松林在林隙作用下林木生长“先高后径”的时空分布格局是红松高干良材形成的生态理论基础。而人工纯林失去了林隙效应的庇护， 树高和胸径生长同步， 早期分杈。以天然红松林生态学理论为基础， 研究出“红松混交林经营最佳模式”和“定株定向”的培育技术体系。把现有人工红松林培育成优质稳产的针阔混交异龄林。

This project investigates the ecological characteristics of Pinus koraiensis (Korean pine) as well as its growth conditions and processes in natural forests. Grounded in the theoretical framework of its coexistence and succession relationships with other tree species, controlled comparative experiments were conducted between pure artificial Korean pine stands and broad-leaved mixed stands. The internal mechanisms underlying Korean pine regeneration and growth were analyzed, and approaches to improve Korean pine regeneration and cultivation quality were identified. Over decades of multi-disciplinary collaborative research efforts, 234 permanent sample plots and more than 150 hectares of various experimental plots were established. The community structure of a 5-hectare natural Korean pine forest was comprehensively measured, with over 1,000 mature Korean pine trees, more than 2,000 young Korean pine individuals, and over 2,000 broad-leaved tree individuals analyzed in detail. By applying an analytical framework combining age structure dynamics and tree spatial distribution patterns, it was revealed that natural Korean pine forests form a spatio-temporal structure mosaic of patches belonging to different age classes. The patches of each age class constitute a dynamic process of periodic cyclic replacement across spatial scales. Utilizing research methods including long-term in-situ observation, controlled disturbance comparison experiments, and community structure dissection, it was uncovered that Korean pine is a gap-dependent regeneration species. Young Korean pine trees require forest gaps formed by disturbances to advance into the upper canopy. Forest gap dynamics represent a critical mechanism maintaining compositional stability, species diversity, and self-sustaining development of old-growth Korean pine forests. The spatio-temporal growth pattern of "height growth preceding diameter growth" exhibited by trees in natural Korean pine forests under the influence of forest gaps provides the ecological theoretical foundation for the formation of high-quality, straight-boled Korean pine timber. In contrast, pure artificial Korean pine stands lose the protective effect of forest gaps, resulting in synchronous height and diameter at breast height (DBH) growth and early branching of trees. Based on the ecological theory of natural Korean pine forests, an optimal management model for Korean pine mixed stands and a "fixed-plant targeted" cultivation technical system were developed. Existing artificial Korean pine stands were transformed into high-quality, stable-yield coniferous-broadleaved mixed uneven-aged forests.

搜集汇总

背景与挑战

背景概述

该数据集聚焦于红松的生态学特性和培育技术，通过对比天然林与人工林的实验研究，揭示了红松更新的内部机制和培育质量提升的途径。数据集包含大量实验数据，如固定标准地、解析树木数量等，为红松林的科学管理提供了重要参考。