VSI - Model Q-SR1LP -Soil Respiration Package

The Q-SR1LP uses the Q-S151 CO2 analyser to quantify soil respiration by measuring the rate of CO2 accumulation. Under field conditions, soil respiration (RS) is measured in situ by placing a chamber directly on the soil or prepared soil respiration rings (allowing for repeated measurements on the same location; optional). Soil temperature can be measured with the Q-S132 Temperature Probe, and soil water loss (evaporation) is measured with the internal Q-S161 Temperature/Relative Humidity Sensor. In addition, soil moisture can be measured with the included Q-S135 Soil Moisture Sensor. Measuring both soil moisture and temperature in conjunction with CO2 efflux measurements is key, as these are the two main abiotic factors affecting RS. Atmospheric pressure is automatically measured with an absolute pressure sensor (Q-S181) to achieve correct CO2 concentrations, while the Q-G266 flow monitor accurately regulates the gas flow through the system.