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目前国内借助热平衡技术开展荒漠植物蒸腾耗水的研究已十分普遍,但涉及测量精度与误差来源的分析研究鲜有报道。本文对茎干热平衡茎流仪监测植株茎流的基本原理进行了介绍,并在此基础上论述了茎干热平衡方法在实际应用中的测量精度及误差的主要来源,为使用热平衡茎流仪监测植物,尤其是荒漠植物提供参考。水分是干旱、半干旱区植物生长的主要限制因子。明确荒漠植物的需水与耗水规律可以为荒漠区生态环境建设过程中的植被种类选择、布局及管理提供科学依据。
At present, the research on transpiration water consumption of desert plants by heat balance technology has been very popular, but few researches on the sources of measurement accuracy and error have been reported. In this paper, the basic principle of plant stem flow monitoring stems and stems heat balance is introduced, and based on this, the main sources of measurement accuracy and error of stem heat balance method in practical application are discussed. In order to monitor the stem flow, Plants, especially desert plants provide a reference. Moisture is a major limiting factor for plant growth in arid and semi-arid zones. To clarify the law of water demand and water consumption of desert plants can provide a scientific basis for the selection, layout and management of vegetation types in the process of ecological environment construction in desert areas.