长白山阔叶红松林生态保护关键区的确定

Ecologically critical areas of broad-leaved Korean pine mixed forest in Changbai Mountains,China

为完善长白山地区保护区体系、减少生物多样性破坏、保护阔叶红松林,对长白山国家自然保护区周边6个林业局、64个林场进行实地调查和数据分析;基于保护生物多样性的地理学方法(GAP),选择41种植物作为重点保护物种,以采伐区、农田、居民点、公路数等因子作为干扰因素,并利用GIS空间分析研究了长白山地区指示植物数量和干扰强度的分布.结果表明:不同林场指示物种分布不均匀,以泉阳县胜利、冷沟子林场为中心形成西北坡和南坡2个保护植物富集分布区域,宝马、衡山、冷沟子和黑河林场有单个重要物种分布;各林场干扰强度不同,露水河林业局和白河林业局北部整体受干扰程度较大.通过各项指标综合分析,确定出长白山北坡的泉阳-露水河南部-白河北部和长白山南坡的长白县东部2个生态保护关键区带.

In order to improve the protection system to reduce the damage of biodiversity and protect broadleaved Korean pine mixed forest, 64 forest farms from 6 Forestry Bureaus around Changbai Mountains Nature Reserve were investigated and analyzed. A total of 41 plants were selected as key protected plants, and felling area, cropland, mining area, highway, railway and residential area were considered as the disturbance factors. GAP and GIS spatial analysis were used to draw the in dicator plant and disturbance intensity distribution maps. The results showed that the indicator spe cies distribution was uneven. The indicator plant enrichment regions were located on the north west ern and southern slopes centered with Shengli and Lenggouzi forest farms of Quanyang County, re spectively, and single distributions of the endemic plants were found in Baoshan, Henshan, Leng gouzi and Heishan forest farms. The different disturbance severities were observed in the different forest farms, among which the north part in Lushuihe and Baihe forest farms were severely disrup ted. Two ecologically critical areas, QuanyangLushuiheBaihe on the north slope of Ch Mountains and the east part of Changbai County on the south slope, were determined based comprehensive analysis. angbai on the