摘要
以信丰县马尾松纯林为研究对象,于2016年在选定的试验林分内分别设置马尾松补植枫香(C1)、马尾松补植木荷(C2)、马尾松补植枫香+木荷(C3)和马尾松纯林(CK)处理,对比分析各种处理对马尾松林木生长因子、林分结构因子、林内小气候、灌草多样性、林下凋落物和植被生物量指标及松材线虫病罹病株率的影响。结果表明:(1)马尾松纯林补植阔叶树可以促进马尾松生长,优化林分结构。(2)补阔处理能够有效降低林内温度和增加林内湿度,改善林内小气候,补植常绿阔叶树比补植落叶阔叶树对改善林内小气候作用明显;补阔处理还可以增加林内灌草层物种多样性和丰富度。(3)补种阔叶树,特别是落叶阔叶树,有利于增加林下凋落物和林下植被生物量,同时对防治马尾松感染松材线虫病具有一定的影响,随着补种阔叶树种类增多,防治效果有提升的趋势。
By taking the Pinus massoniana pure forest in Xinfeng County as the research object,replanting Liquidambar formosana in Pinus massoniana(C1),replanting Schima superba in Pinus massoniana(C2),replanting Liquidambar formosana+Schima superba in Pinus massoniana(C3)and Pinus massoniana pure forest(CK)were set up in the selected experimental stand in 2016.The effects of various treatments on the growth factors,stand structure factors,microclimate in the forest,shrub and grass diversity,understory litter and vegetation biomass indicators and the incidence rate of Bursaphelenchus xylophilus disease of Pinus massoniana were compared and analyzed.The results showed as the following three aspects.(1)Replanting broad-leaved trees in Pinus massoniana pure forest could promote the growth of Pinus massoniana and optimize the stand structure.(2)The treatments of replanting broad-leaved trees could effectively reduce the temperature and increase the humidity in the forest,and improve the microclimate in the forest.The effect of replanting evergreen broad-leaved trees on improving the microclimate in the forest was more obvious than that of replanting deciduous broad-leaved trees.The treatments of replanting broad-leaved trees could also increase the species diversity and richness of shrub and grass layer in the forest.(3)Supplementary inoculation of broad-leaved trees,especially deciduous broad-leaved trees,was conducive to increasing the biomass of understory litter and understory vegetation,and had a certain impact on the prevention and control of Bursaphelenchus xylophilus disease infection in Pinus massoniana.With the increase in the variety of supplementary inoculation of broad-leaved trees,the control effect had the tendency of improvement.
作者
邓必平
Deng Biping(Jiangxi Environmental Engineering Vocational College,Ganzhou 341000,China)
出处
《防护林科技》
2024年第3期15-18,共4页
Protection Forest Science and Technology
基金
江西省教育厅科学技术研究项目“马尾松纯林阔叶化改造试验研究”(GJJ2205418)。
关键词
马尾松纯林
阔叶化改造
植物多样性
Pinus massoniana pure forest
broad-leaved transformation
plant diversity
