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[ Instrument Network Instrument Development ] The Key Science and Technology Infrastructure Construction Project of the Field Station of the Chinese Academy of Sciences "Lysimeter Group of Water Balance Automatic Simulation Monitoring System in Northern China" was completed and passed the acceptance on June 30th. This is the first key technology infrastructure construction project completed by the Chinese Academy of Sciences field station network.
After three years of construction, the largest water balance automatic simulation monitoring system in China, the Lysimeter group, was completed at Shapotou Station. The Lysimeter group has 36 large-scale weighing lysimeters (diameter 2.28m, surface area 4m2, depth 3.35m). It integrates mobile greenhouses, intelligent precipitation simulation facilities and groundwater control systems to develop Lysimeter group data management information. system.
The project collected aeolian sandy soil and zonal soil and typical sand-fixing shrubs from four different sand areas in northern China and filled them into large-scale lysimeters to simulate the evolution of sandy land under different climatic zones with precipitation and groundwater level changes, and continuously and accurately monitor vegetation-soil. -Precipitation infiltration, groundwater recharge, soil water dynamics, evapotranspiration, plant growth, etc. in the sand system, through the simulation, monitoring and automatic control of various states and real-time transmission of data, realizing the monitoring and simulation of water balance in the northern sand area -Integrated research has improved the research capabilities of ecological hydrology and ecological physiology and ecology in sandy areas of China, and promoted the integration of hydrology, ecology and biogeochemical cycles.
The completed Lysimeter group is the only system that realizes linkage control of precipitation-groundwater synchronous control, simulation-quantization system control, large light steel structure moving greenhouse and precipitation simulator with 20m span. During the construction and equipment commissioning process, the scientific research personnel obtained a set of test data and equipment parameters, and established engineering construction specifications and technical standards. The acceptance expert group believes that the construction of the Lysimeter group will effectively enhance the research capacity of China's national defense sand control and further promote the networking research of key scientific issues in the northern sand area of ​​China.
The key science and technology infrastructure construction project of the Chinese Academy of Sciences field station is an important facility for the forward-looking layout of the field station construction. It is an important task to enhance the research capability and level of field stations and promote the development of field stations.
(Original title: The first key technology infrastructure construction project completed by the Chinese Academy of Sciences field station network)