淮河源主要林地类型群落结构特征

以淮河源生态功能区为调查区域,调查了主要林地类型的群落样地,通过设置样地调查群落结构特征、林分蓄积量和株数,分析该群落的种类组成及物种的丰富度和多样性。结果表明,调查区域部分林地郁闭度高,密度大,林木成材较差;由于大面积连片种植杨树、马尾松、板栗等,造成各种病虫害的发生,由于是连片生长,造成病虫害传播快,防治困难;群落结构稳定,生态保存基本良好,尚未发现大面积生态破坏现象。

Main Forest Type Community Structure Characteristics in Source of Huaihe River

The main forest type community sample plots in source of Huaihe River were investigated.By surveying community structure charac-teristics, the stand volume and plants, the community species composition, species richness and diversity were analyzed.The results showed that part of the forest canopy density is high, resulting in poor timber forest;there is a variety of diseases and insect pests caused by large area planting of poplars, masson pine, Chinese chestnut;plant diseases and insect pests spread fast for continuous growth, prevention and treatment is difficult;the community structure is stable, the ecological conservation is basically good, and no large area ecological destruction is found.