Development of monitoring of soil respiration rate with 6 sample changers for non commercial electric power supply.

为了在没有商业电源的野外条件下连续监测土壤呼吸速率，我们研制了一种带有6个采样器的新机器。在没有任何商业电力供应的情况下，开发一种测量森林土壤呼吸的新机器，以估算净生态系统生产量，净生物量生产量减去所谓的土壤呼吸速率，是我们迫切需要解决的问题。该机器可以用两节汽车电池连续运行一周，并自动记录了1000多组数据。然而，尺寸远不是方便的类型，一个腔室尺寸为50x50x15cm，主要操作部分为50x80x25cm，重量为6kg。因此，我们很难单独使用该系统，但需要两个人以上在研究现场进行设置。我们无法完成数据记录仪部分的防水。在这一点上，为了商业用途，还需要进一步改进。

To continuous monitoring soil respiration rate in filed condition where there is no commercial electric power supply, we developed a new machine with 6 sample cahngers. It is an urgent subject for us to devleop a new machine for measuring soil respiration in forests without any commercial electric power supply to contribute to estimate the net ecosystem production, net biomass production minus so-called soil respiration rate. The machine could run for one week with two car batteries and registered more than 1000 data set were automatically recorded. However, the size was far from a handy type but one chamber size was 50x50x15cm and main operation part was 50x80x25cm with 6kg. Therefore, it is rather difficult for us to use this system by single investigator but more than two persons will be needed to set them up at the study site. We could not complete the water-proof in the data logger part. Further improvement will be needed in this point for commercial use.