The Distributed Soil Respiration System deploys multiple single-point distributed soil respiration units to measure soil CO2 flux at multiple locations, enabling continuous, long-term monitoring of soil carbon flux. Each single-point distributed soil flux system includes a CO2 infrared analyzer, controller, flux chamber, and soil temperature & moisture sensors. Even when multiple devices are distributed across different regions, IoT SIM cards enable nationwide networking, effectively solving several issues of traditional soil flux measurement systems.

• Eliminates pipeline length constraints, truly enabling long-distance simultaneous and synchronized monitoring;

• Enables synchronized measurement across multiple respiration chambers, eliminating errors caused by measurement asynchrony;

• Shortens the pipeline length between analyzer and respiration chamber, effectively eliminating errors from pipeline dead volume and improving accuracy.

The Long‑Term Distributed  Soil CO₂ Flux System greatly improves sample throughput, measurement accuracy, and efficiency, truly achieving long-distance synchronized measurement. It provides a new solution for soil flux research and represents a technical innovation for synchronous soil measurement at large spatial scales.It can be widely applied to research in ecology, agronomy, forestry, environmental science, and permafrost studies. This new technology provides novel experimental methods for scientific research, opening up greater possibilities for soil flux measurement at large spatial scales.

Guizhou Normal University&Yellow River Institute of Hydraulic Research, YRCC

Each distributed soil flux chamber can operate independently, measuring CO2 concentration changes within the chamber while combining self-measured air temperature, atmospheric pressure, and soil temperature data, then calculating CO2 flux. The acquired raw data and calculated flux results are stored on the SD card. The wireless transmission unit provides remote data transmission, enabling remote parameter modification, measurement status control, and remote data downloading.

Key Features

Unique distributed soil flux system design for continuous, high-precision, fully automatic unattended long-term field monitoring

Multi-temporal and spatial synchronous measurement at multiple sites over large spatial scales, significantly improving sample throughput, measurement accuracy, and efficiency

Remote networking capability for real-time wireless remote data transmission and networking

Ultra-long-distance communication between distributed soil flux system and wireless transmission units

Data encryption ensures data security during wireless transmission

No post-processing required; measurement results are automatically calculated and stored

Accurate and verifiable flux measurements

Each distributed soil flux system can connect to auxiliary sensors for soil temperature and soil moisture

Simple operation with one-click results

Includes post-processing data analysis software

Lightweight and rugged system design

Specifications