长白山白桦林细根的生产力及其周转.pdf

, R L. Pregitzer K S. Temporal and depth-related pat-Р 。 terns of fine root dynamics in northern hardwood forests [J]. Jour-Р 常见几种乔木树种细根分解速率比较,白桦林细根Р nal of Ecology, 1996,84(2):167-176.Р 分解速率比阔叶红松林中红松、色木槭、紫椴的平[13] Persson H. The distribution and productivity of fine roots in bore-Р ( ):Р 均分解率 56.31%要大[15],这表明白桦作为长白山区 al forests[J]. Plant and Soil, 1983, 71 1 87-101.Р 域次生演替过程中的先锋树种,能在森林生态系统[14] Vogt K A, Grier C C, Vogt D J. Production, turnover and nutrientР 演替初期阶段为土壤中输送大量的养分,这能改善 dynamics of above- and below-ground detritus of world forests[J].Р Advances in Ecological Research,1986, 15:303-377.Р 受到干扰后的土壤养分状况,利于演替中后期其它Р [15] Fogel R.Root turnover and Productivity of coniferous forests [J].Р 物种的生长。 Plant and soil, 1983, 71(1):71-85.Р 细根周转是森林生态系统潜在的碳和养分循Р (责任编辑:高国赋)Р 环的重要的调节器[1]。在同一气候带的不同林型中