Abstract. Soil respiration measurement is important to assess natural carbon dioxide production. The closed chamber technique allows relatively easy soil respiration monitoring. A planned spatially large-scale campaign incites us to implement our ultra-low-cost portative chamber The chamber itself is entirely built from commercial parts with little, easy-to-make, quick machining work. The resulting setup is an easy-to-operate standalone, robust device. Used sensors are cost-effective yet accurate digital sensors that were successfully checked against some reference sensors. All these characteristics made the described chamber accessible to build and use for a wide scientific and educational community. The wide interest aroused by this construction among our colleagues pushes us to share our achievements. In this short note, we describe this simple device along with used sensors and apparent respiration quotient tip.

中文翻译：

---

超低成本手动土壤呼吸室

摘要。土壤呼吸测量对于评估自然二氧化碳产生很重要。封闭室技术可以相对容易地监测土壤呼吸。一项计划中的大规模空间活动促使我们实施我们的超低成本便携式室。该室本身完全由商业零件制成，只需少量、易于制造、快速的机械加工。由此产生的设置是一个易于操作的独立、坚固的设备。使用的传感器是具有成本效益且准确的数字传感器，已成功地根据一些参考传感器进行了检查。所有这些特征使得所描述的室可以为广泛的科学和教育界建造和使用。此次建设引起了同事们的广泛兴趣，促使我们分享我们的成果。在这篇简短的文章中，我们描述了这个简单的设备以及所使用的传感器和表观呼吸商尖端。