环境因子对树木细根生物量、生产与周转的影响

细根在森林生态系统C平衡和养分循环中的重要作用已为大量研究所证实，树木有赖于细根吸收水分和养分，而细根对环境胁迫比较敏感，因此细根动态可指示环境变化，还可反映树木的健康状态，影响树木细根生产和周转的因子很多，本文在收集大量研究文献基础上，讨论了文献基础上，讨论了土壤养分，水分、pH值，温度等环境因子以及大气CO2增长对树木细根分布，生物量，生产和周转的影响，以期为我国开展细根生态学研究提供参考。

Fine-root Biomass, Production and Turnover of Trees in Relations to Environmental Conditions

It is wided confirmed that fine roots play significant roles in carbon budget and nutrient cycling of forest ecosystems. Trees are dependent on fine roots for uptakes of nutrients and water,while fine roots are sensitive to environmental stress. Therefore fine root dynamics is one of important indicators for changing environment and tree health. Based on a huge literature, fine root distribution, biomass, production and turnover of trees in relations to such environmental factors as soil nutrient, moisture, pH, temperature and atmospheric CO 2, etc., were discussed in the paper, aiming to provide Chinese colleagues with references for fine root ecological studies in China.