基于树木径向生长仪监测高寒地区树木生长和水分利用的研究进展

文中综述了树木径向生长仪监测数据的处理和分析方法，重点对基于树木径向生长仪监测高寒森林生态系统树木生长和水分利用的研究进行了总结归纳，指出目前在探索高纬度北方森林树轮宽度对夏季温度敏感性下降原因的过程中仍缺乏普遍的机制解释，而这一普遍机制可能与高寒地区树轮形成的年内季节动态特征有关。另外，尽管树木径向生长仪能够反映高寒地区的树木水分利用状况，但高寒地区树木水分利用对气候变化的响应仍不清楚。基于目前的研究现状，建议未来加强几个方面的研究，即考虑高寒地区树木径向生长的季节动态特征对树木生长与环境因子关系的潜在影响，加强与其他监测手段的比较研究，开展与生态系统水平观测指标的关联分析。

A Review on Tree Growth and Its Water Use in Cold Environments Based on Dendrometer

In this paper, we reviewed the analytical methods of dendrometer data, and concluded the progress of using dendrometer to monitor stem radial growth and tree water use in cold environments. We pointed out that a general explanation for the reduced sensitivity of cold-limited tree growth to summer temperature is still wanted, which may be closely related with the special seasonal pattern of stem radial growth in cold environments. Meanwhile, though dendrometer could monitor tree water use in cold environments, the response of tree water use to climate change remains unclear. Based on current researches, more focuses should be put on following fields: the potential effects of seasonal pattern of stem radial growth on the relationships between tree growth and climatic factors in cold environments, its comparison with other monitoring methods, its correlation with ecosystem-level measurements.