Water use characteristics of bamboo (South China)

竹子水分利用特征（华南地区）

• 批准号: 194567477
• 负责人: Professor Dr. Dirk Hölscher
• 金额: --
• 依托单位: Abteilung Waldbau und Waldökologie der Tropen
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2011
• 资助国家: 德国
• 起止时间: 2010-12-31 至 2014-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/194567477?language=en
• 关键词: Water; use; characteristics; bamboo; South

Bamboos (Poaceae) are widespread in tropical and subtropical forests. Particularly in Asia, bamboos are cultivated by smallholders and increasingly in large plantations. In contrast to trees, reliable assessments of water use characteristics for bamboo are very scarce. Recently we tested a set of methods for assessing bamboo water use and obtained first results. Objectives of the proposed project are (1) to further test and develop the methods, (2) to compare the water use of different bamboo species, (3) to analyze the water use to bamboo size relationship across species, and (4) to assess effects of bamboo culm density on the stand-level transpiration. The study shall be conducted in South China where bamboos are very abundant. It is planned to work in a common garden (method testing), a botanical garden (species comparison, water use to size relationship), and on-farm (effects of culm density). Method testing will include a variety of approaches (thermal dissipation probes, stem heat balance, deuterium tracing and gravimetry), whereas subsequent steps will be based on thermal methods. The results may contribute to an improved understanding of bamboo water use characteristics and a more appropriate management of bamboo with respect to water resources.

竹子(禾本科)广泛分布于热带和亚热带森林。特别是在亚洲，竹子是由小农户种植的，而且越来越多地在大型种植园种植。与树木相比，对竹子水分利用特性的可靠评估非常稀缺。最近，我们测试了一套评估竹子水分利用的方法，并取得了初步的结果。该项目的目标是(1)进一步测试和发展这些方法，(2)比较不同竹种的用水量，(3)分析不同物种的用水量与竹子大小的关系，(4)评估竹子密度对林分水平蒸腾的影响。研究将在竹子非常丰富的南中国地区进行。它计划在一个普通花园(方法测试)、一个植物园(品种比较、用水量与大小的关系)和农场(秸秆密度的影响)中工作。方法测试将包括各种方法(散热探头、杆热平衡、氚示踪和重量法)，而后续步骤将以热方法为基础。研究结果可能有助于更好地了解竹子的水分利用特性，更好地管理竹子的水资源。