森林生态系统林木生长与耗水研究进展

Research Progress in Forest Growth and Water Consumption of Forest Ecosystems

森林生态系统林木的生长和耗水是森林水分利用的研究重点,对当前推进节水林发展、抗旱树种筛选具有重要意义。文章对森林生态系统林木生长的研究方法进行了综述,指出常见的林木生长方法有普通测定法、年轮法、树木径向变化记录仪等,并对3个林木生长模型(全林分模型、径阶分布模型、单木生长模型)的优劣和使用范围进行了比较;从叶片尺度、单株尺度、林分尺度和区域尺度分别比较了林木耗水方法的差异和优劣。通过综述,确定各方法的优劣和使用范围,以更好的指导科学实验,得出精确结果。

The growth and water consumption of forest ecosystem trees are the research emphases of forest water utilization, which is of great significance for the development of water-saving forest and the screening of drought-resistant trees. The paper summarized the research methods of forest tree growth in forest ecosystem, pointed out some common measuring methods of tree growth such as common mensuration, growth ring, and the radial change recorder, etc.; It compared the advantages and disadvantages of three tree growth models （whole stand model, diameter distribution models, single-tree growth model） and their applicable range; The differences, advantages and disadvantages of the water consumption method were compared in the aspect of the blade scale, single plant scale, forest stand scale, and regional scale. By summarizing, the advantages and disadvantages of each method are determined so that scientific experiments could be better guided to obtain accurate results