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

为了在没有商业电力供应的田间条件下连续监测土壤呼吸速率，我们研制了一种具有6个样品罐的新型土壤呼吸速率监测仪。开发一种在没有任何商业电力供应的情况下测量森林土壤呼吸的新机器，以帮助估计生态系统净生产量、净生物量生产量减去所谓的土壤呼吸率，是我们迫切需要解决的问题。这台机器可以在两个汽车电池的情况下运行一周，并自动记录1000多个数据集。但大小远不是轻便的类型，其中一个小室的大小为50×50×15 cm，主要手术部位为50×80×25 cm，重6 kg。因此，我们很难由一名调查员使用这一系统，但需要两个以上的人在研究现场安装。我们无法完成数据记录器部分的防水。在这一点上，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.